Engine Controls - Removal & Installation Buick Park Avenue II рестайлинг

AIR INDUCTION SYSTEMS

BOOST CONTROL SOLENOID

For removal and installation procedures, see BOOST CONTROL SOLENOID under MOTORS & SOLENOIDS.

Removal & Installation (VIN 1)

1. Remove the boost control solenoid. See «BOOST CONTROL SOLENOID»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__boost-control-solenoid). Disconnect the vacuum hose from the bypass valve actuator. (Scheme 20)
2. Remove the bypass valve actuator mounting bolts and rotate the bypass valve actuator until the rod disengages the lever. To install, reverse removal procedure. Tighten the bypass valve actuator mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications).

SUPERCHARGER

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

1. Remove the spark plug wires.
2. Remove the vacuum line from the fuel injector rail. (Scheme 1)
3. Remove the fuel rail nuts and stud.
4. Remove the fuel injector rail.
5. Remove the booster bypass nut and hose. (Scheme 2)
6. Remove the booster bypass.
7. Remove the regulator valve and the harness bolt.
8. Remove the boost solenoid bolts and hose.
9. Remove the bolts from the vacuum block.
10. Remove the engine wiring harness heat shield bolt and nut. (Scheme 3)
11. Remove the engine harness wiring heat shield.
12. Remove the MAP sensor bracket bolts and hose. (Scheme 4)
13. Remove the MAP sensor bracket.
14. Remove the throttle body nuts. (Scheme 5)
15. Remove the throttle body and gasket.
16. Remove the bolts, spacers, and the stud from the supercharger. (Scheme 6)
17. Remove the supercharger.
18. Remove the supercharger gasket. (Scheme 7)

Note. Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the supercharger gasket and supercharger.
2. Install the spacers, bolts, and stud to the supercharger in the proper locations. Tighten the stud/bolts to specification, see «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
3. Install the throttle body and gasket.
4. Install the throttle body nuts. Tighten the throttle body nuts to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
5. Install the engine wiring harness heat shield.
6. Install the engine wiring harness heat shield bolt and nut. Tighten the engine wiring harness heat shield bolt and nut to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
7. Install the MAP sensor bracket.
8. Install the MAP sensor bracket bolts. Tighten the MAP sensor bracket bolts to specification.
9. Install the vacuum block. Install the vacuum block bolts.
10. Tighten the vacuum block bolts to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
11. Install the boost solenoid. Install the boost solenoid bolts.
12. Tighten the boost solenoid bolts to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
13. Install the regulator valve and harness bolt.
14. Install the booster bypass. Install the booster bypass nut.
15. Tighten the booster bypass nut to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
16. Install the fuel rail. Install the vacuum line to the fuel rail.
17. Install the fuel rail nuts and stud.
18. Tighten the fuel rail nuts and stud to specification, «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
19. Install the spark plug wires.

THROTTLE BODY

Removal (VIN K)

1. Remove fuel injector sight shield (upper engine cover) from engine. Drain the cooling system. Disconnect the Intake Air Temperature (IAT) sensor electrical connector. Remove the intake air duct from the throttle body. Disconnect the Idle Air Control (IAC) valve electrical connector. (Scheme 19) Disconnect the Throttle Position (TP) sensor electrical connector.
2. Disconnect the Mass Airflow (MAF) sensor electrical connector. Remove the accelerator control cable from the throttle body lever. Remove the accelerator control cable from the accelerator controls bracket. Remove the cruise control cable from the accelerator controls bracket. Disconnect the electrical harness retainer clip from the accelerator controls cable bracket. Remove the vacuum hoses from the throttle body.
3. Remove the throttle body support bracket bolts. Remove the throttle body support bracket. Remove the throttle body nuts. Remove the throttle body assembly.
4. Clean the throttle body gasket mating surfaces. If throttle body is being replaced, remove the accelerator controls bracket from the throttle body.

1. Install the accelerator control bracket to the throttle body, if necessary. Install the new gasket. Install the throttle body assembly. Install the throttle body nuts. Tighten the nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Install the throttle body support bracket. Install the throttle body support bracket bolts. Tighten the bolts to specification.
2. Install the air injection outlet pipe, if applicable. Install the vacuum hoses to throttle body. Install the electrical harness retainer clip to the accelerator control cable bracket, if previously removed. Install the accelerator control cable to the accelerator control bracket and throttle body lever. Install the cruise control cable to the accelerator control bracket and throttle body lever.
3. Connect the MAF sensor electrical connector. Connect the TP sensor electrical connector. Connect the IAC valve electrical connector. Install the air cleaner intake duct. Fill the cooling system. See «COOLING SYSTEM BLEEDING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__cooling-system-bleeding) under COOLING SYSTEM. Install the fuel injection sight shield.

Removal (VIN 1)

1. Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Drain the cooling system. Disconnect the Intake Air Temperature (IAT) sensor electrical connector. Remove the air cleaner intake duct from the throttle body. Disconnect the Idle Air Control (IAC) valve electrical connector. (Scheme 19)
2. Disconnect the Throttle Position (TP) sensor electrical connector. Disconnect the Mass Airflow (MAF) sensor electrical connector. Remove the cruise control cable from the accelerator control bracket and throttle body lever. Remove the accelerator control cable from the accelerator control bracket and throttle body lever. Remove the electrical harness retainer clip from the accelerator control cable bracket, if applicable. Note locations and remove the vacuum hoses from the throttle body.
3. Remove the 3 nuts and bolts holding the throttle body to the supercharger. Remove the throttle body assembly from the intake manifold. Clean the gasket surface on the intake manifold and the throttle body assembly.

1. Install the accelerator controls bracket to the throttle body, if necessary. Install the new gasket. Install the throttle body assembly. Install the throttle body nuts and bolts. Tighten the nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
2. Install the secondary air injection reaction pump outlet pipe, if previously removed. Install the vacuum hoses to throttle body as noted on removal. Install the electrical harness retainer clip to the accelerator control cable bracket, if previously removed. Install the accelerator control cable to the accelerator control bracket and throttle body lever.
3. Install the cruise control cable to the accelerator control bracket and throttle body lever. Connect the MAF sensor electrical connector. Connect the TP sensor electrical connector. Connect the IAC valve electrical connector. Install the air cleaner intake duct. Fill the cooling system. See «COOLING SYSTEM BLEEDING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__cooling-system-bleeding) under COOLING SYSTEM. Install the fuel injection sight shield.

THROTTLE BODY CLEANING PROCEDURE

1. Remove the air cleaner outlet duct. Remove the air inlet screen, if applicable. Inspect the throttle body bore and the throttle valve plate for deposits. Open the throttle valve in order to inspect all of the surfaces.
2. Clean the throttle body bore and the throttle valve plate using a clean shop towel with GM Top Engine Cleaner (1052626) or an equivalent product. If the deposits are excessive, remove and disassemble the throttle body for cleaning. See «THROTTLE BODY»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__throttle-body) .
3. After disassembly, clean the throttle body using a parts cleaning brush. DO NOT immerse the throttle body in any cleaning solvent. If you removed and disassembled the throttle body for cleaning, assemble and install the throttle body. Install the air inlet screen, if applicable. Install the air cleaner outlet duct.

POWERTRAIN CONTROL MODULE

1. PCM is located inside air cleaner housing assembly. (Scheme 8) Turn OFF the ignition. Disconnect negative battery cable. Disconnect the Intake Air Temperature (IAT) sensor electrical connector.
2. Loosen the clamp securing the air intake duct to the air cleaner housing. Carefully remove the air intake duct from the throttle body and from the air cleaner housing. Remove the 2 screws from the 2 air cleaner housing sections. Remove the air cleaner housing cover assembly.
3. Without disconnecting the PCM connectors, remove the PCM and harness from the air cleaner housing. Disconnect the PCM electrical connectors.

1. Connect the PCM electrical connectors to the PCM. Tighten connectors to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Install the PCM and harness into the air cleaner housing. Install the air cleaner housing cover assembly.
2. Reinstall the 2 screws to the 2 air cleaner housing sections. Carefully reinstall the air intake duct to the throttle body and to the air cleaner housing. Tighten the clamp securing the air intake duct to the air cleaner housing. Reconnect the negative battery cable.
3. The new PCM must be programmed. See «PROGRAMMING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) . The replacement PCM will not allow secondary air injection pump operation until a total of 10 miles have been accumulated.

Scheme 7

CRANKSHAFT POSITION SENSOR VARIATION RELEARN PROCEDURE

1. Install a scan tool.
2. With a scan tool, monitor the Powertrain Control Module (PCM) for DTCs. If other DTCs are set, except DTC P1336, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/buick/park-avenue/ii-2002-2005/remont/testing-diagnostics/#engine-control-system-self-diagnostics-38l__diagnostic-trouble-code-definitions) in SELF-DIAGNOSTICS - 3.8L BONNEVILLE, GRAND PRIX, IMPALA, LESABRE, MONTE CARLO, PARK AVENUE & REGAL article.
3. With a scan tool, select the Crankshaft Position (CKP) variation learn procedure.
4. Observe the fuel cut-off for the engine that you are performing the learn procedure on.
5. The scan tool instructs you to perform the following: Block the drive wheels. Apply the vehicles parking brake. Cycle the ignition from off to on. Apply and hold the brake pedal. Start and idle the engine. Turn off the A/C. Place the vehicles transmission in Park (A/T) or Neutral (M/T). The scan tool monitors certain component signals to determine if all the conditions are met to continue with the procedure. The scan tool only displays the condition that inhibits the procedure. The scan tool monitors the following components: CKP sensors activity. If there is a CKP sensor condition, refer to the applicable DTC that set. Camshaft Position (CMP) sensor activity. If there is a CMP sensor condition, refer to the applicable DTC that set. Engine Coolant Temperature (ECT). If the ECT is not warm enough, idle the engine until the ECT reaches the correct temperature.
6. With the scan tool, enable the CKP system variation learn procedure.
7. Slowly increase the engine speed to the RPM that you observed.
8. Immediately release the throttle when fuel cut-off is reached.
9. The scan tool displays Learn Status: Learned this ignition. If the scan tool does not display this message and no additional DTCs set, repair engine mechanical problem. See appropriate article in ENGINES. If a DTC set, see «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/buick/park-avenue/ii-2002-2005/remont/testing-diagnostics/#engine-control-system-self-diagnostics-38l__diagnostic-trouble-code-definitions) in SELF-DIAGNOSTICS - 3.8L BONNEVILLE, GRAND PRIX, IMPALA, LESABRE, MONTE CARLO, PARK AVENUE & REGAL article.
10. Turn off the ignition for 30 seconds after the learn procedure is completed successfully.

Bonneville

Using The Radio

1. Turn the ignition to ACC or ON, with the radio OFF.
2. Press and hold the TUNE DISP button on the radio for at least 5 seconds until SETTINGS is displayed.
3. Press the SEEK PTYPE or the SEEK PSCAN up or down arrow to scroll through the main menu.
4. Scroll until OIL LIFE appears on the display.
5. Press the 1 PREV or 2 NEXT button to enter the sub menu. RESET will be displayed.
6. Press the TUNE DISP button to reset. A chime will be heard to verify the new setting and DONE will be displayed for one second.
7. Once the message has been reset, scroll until EXIT appears on the display.
8. Press the TUNE DISP button to exit programming. A chime will be hear to verify the exit.

Using The Accelerator Pedal

1. Turn the ignition ON, with the engine OFF.
2. Fully press and release the accelerator pedal 3 times within 5 seconds. If the CHANGE ENGINE OIL message flashes, the system reset. However, if it stays on, it did not reset. Repeat the procedure.

LeSabre & Park Avenue

1. Display OIL LIFE INDEX on the DIC.
2. Press and hold the RESET button on the DIC for more than 5 seconds. The oil life will change to 100 percent.

Remote Programming

The Remote SPS method is a 3 step process that involves the following procedures

1. Connecting the Tech 2® to the vehicle and obtaining the information from the module.
2. Connecting the Tech 2® to the terminal and downloading a new calibration file from the terminal into the Tech 2® memory.
3. Reconnecting the Tech 2® to the vehicle and uploading the new calibration file into the module.

Performing Remote Procedure

1. Connect the Tech 2® to the vehicle and obtain the module information using the following: NOTE: Ensure the control module is installed in the vehicle and the battery is fully charged before programming. Connect the Tech 2® to the vehicle DLC, with engine and Tech 2® OFF. Turn ON the Tech 2®. Press ENTER at the title screen. Turn ignition on, with engine off. Select SERVICE PROGRAMMING at the Main Menu. NOTE: Select REQUEST INFO AGAIN if a Vehicle Identification Number (VIN) was previously stored in the Tech 2®. Select REQUEST INFO. Enter the vehicle description by following the on-screen instructions. Turn OFF all accessories and select CONTINUE. NOTE: Select NO and write down the VIN if the VIN is incorrect. Verify that the correct VIN is entered on the Tech 2® and select YES.
2. Turn OFF the Tech 2®.
3. Disconnect the Tech 2® from the vehicle.
4. Turn OFF the ignition.
5. Transfer the data from the terminal to the Tech 2® using the following procedure: Connect the Tech 2® to the terminal. NOTE: The TIS supports service programming with the Tech 2® scan tool only. Launch the TIS application at the terminal. Select the SERVICE PROGRAMMING SYSTEM at the Main Screen. Highlight the following information on the Select Diagnostic Tool and Programming Process Screen: Select Diagnostic Tool, select Tech 2®. Select Programming Process, identify whether an existing module is being reprogrammed or a module is being replaced with a new one. Select ECU, select vehicle. Select Next. Verify the connections and select Next. NOTE: You may receive a message stating that the control module could be a service control module if you selected NO to the VIN being correct. Click OK. Verify the VIN and select Next. Select the appropriate controller for the vehicle being serviced. NOTE: When selecting the Vehicle Configuration Index (VCI) programming type, a valid VCI number for the vehicle must be entered. This number may be obtained from the Techline® Customer Support. Select the type of programming to be performed from the following categories: Normal Used for updating an existing calibration or programming a new controller. Vehicle Configuration Index (VCI) Used for updating an existing controller or programming a new controller for newer vehicles whose VINs are not yet in the database. Reconfigure Used to reconfigure a vehicle for changes in tire size and axle ratios. Select Next. NOTE: Refer to service bulletins before service programming is performed if the bulletins are listed along with calibration files. Select the appropriate calibration file for the vehicle being serviced. Select Next. NOTE: Select Cancel if you receive a message stating that the calibration selected is already the current calibration in the control module and reprogramming with the same download is not allowed. Verify your selection on the Summary screen. Select Next.
6. Perform the «CRANKSHAFT POSITION SENSOR VARIATION RELEARN PROCEDURE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__crankshaft-position-sensor-variation-relearn-procedure) using the Special Functions feature, if applicable.
7. Close the application and return to the TIS application selection screen after the download is complete.
8. Turn OFF the Tech 2®.
9. Disconnect the Tech 2® from the terminal.
10. Transfer the data from the Tech 2® to the control module using the following procedure: Connect the Tech 2® to the vehicle DLC, with the engine and the Tech 2® OFF. Turn ON the Tech 2®. Press ENTER at the Title screen. Turn ignition on, with engine off. Select Service Programming System. Select the Program ECU function on the Tech 2®. Verify the VIN and calibration numbers, select Continue. Follow the on-screen instructions and select Continue. Select continue and exit the program after the Tech 2® displays Programming Was Successful.
11. Turn OFF the ignition.
12. Turn OFF the Tech 2®.
13. Disconnect the Tech 2® from the vehicle.

Some vehicles will require that the Idle Learn, TP Learn, Theft Relearn, or Crankshaft Variation Learn procedures be performed after programming. Consult the appropriate service information for these procedures. Verify the control module programming was successful using the following procedure

1. Turn OFF the ignition for 30 seconds.
2. Start engine.

Off-Board Remote Programming Procedure

Note. Ensure the Tech 2® and the terminal are both equipped with the latest software before performing SPS.

The Off-Board Programming Adapter Kit (J 41207) is required when a module must be programmed without having the vehicle present. The adapter allows the module to be turned ON and communicate with the scan tool.

Performing Off Board Remote Procedure

1. Obtain the Vehicle Identification Number (VIN) of the vehicle for which the module is being programmed.
2. Launch the TIS application at the terminal.
3. Select the Service Programming System.
4. Highlight the following information on the Select Diagnostic Tool and Programming Process screen: Select Diagnostic Tool, select Tech 2®. Select Programming Process, identify whether an existing module is being reprogrammed or replaced with a new one. Select ECU location, select Off-Board Programming Adapter.
5. Select, Next.
6. Follow the directions on the Preparing For Communication screen for connecting the following components: The control module. The Off-Board Programming Request Information function on the Tech 2®. The Tech 2®.
7. Select the Service Programming Request Information function on the Tech 2®.
8. Follow the Tech 2® instructions to obtain the module data and security information.
9. After the Tech 2® has received the data from the module, exit the Request Info mode.
10. Disconnect the Tech 2® from the OBPA.
11. Turn Off the Tech 2®.
12. Connect the Tech 2® to the terminal.
13. Turn ON the Tech 2®.
14. Select Next at the terminal after the Tech 2® start-up screen appears.
15. Enter the VIN of the vehicle that will be receiving the control module.
16. Select Next.
17. Select the type of programming to be performed from the following categories: Normal Used for updating an existing calibration or programming a new controller. Vehicle Configuration Index (VCI) Used for updating an existing controller or programming a new controller for newer vehicles whose VINs are not yet in the database. Reconfigure Used to reconfigure a vehicle for changes in tire size and axle ratios.
18. Select Next.
19. Select a calibration on the Calibration Selection screen, if necessary.
20. Ensure all the desired folder tabs have a Green check mark.
21. Select Next.
22. Verify the current and the selected calibration of the control module on the Summary screen.
23. Select Next.
24. Select OK.
25. On model year 1996 and newer controllers, a Crankshaft Position (CKP) relearn procedure box may appear. Select OK.
26. Follow the on-screen instructions, if any, when the Program Controller/Programming Complete screen appears.
27. Select Close.
28. Turn OFF the Tech 2®.
29. Disconnect the Tech 2® from the terminal.
30. Connect the Tech 2® to the OBPA.
31. Turn ON the Tech 2®.
32. Select ENTER at the Title screen.
33. Select the Service Programming System at the Main Menu.
34. Select the Program ECU function.
35. Select Continue.
36. Follow the on-screen instructions.
37. Select Continue.
38. Select Exit when the Programming is complete.
39. Turn OFF the OBPA.
40. Turn OFF the Tech 2®.
41. Disconnect the OBPA from the Tech 2® and the control module.

Pass-Thru Procedure

Note. The TIS supports service programming with the Tech 2® scan tool only.

Pass-Thru programming allows the scan tool to remain connected to the terminals and to the vehicle throughout the programming process. The vehicle must be in close proximity to the terminal while using Pass-Thru.

1. Launch the TIS application at the terminal.
2. Select the Service Programming System.
3. Highlight the following information on the Select Diagnostic Tool Programming Process screen: Select Diagnostic Tool, select Pass-Thru. Select Programming Process, identify whether an existing module is being reprogrammed or a module is being replaced with a new one. Select ECU location, select vehicle.
4. Select Next.
5. Complete all terminal-directed data on the Preparing for Communication/Determine Vehicle screen until Next is highlighted.
6. Select Next.
7. Follow the instructions on the Preparing for Communication screen.
8. Select Next.
9. Verify the VIN on the Validate Vehicle Identification Number screen.
10. Select Next.
11. If an option screen appears, verify the vehicle configuration and/or RPO information.
12. Select Next.
13. Highlight the appropriate control module and programming type on the Supported Controllers screen.
14. Select Next.
15. Select the proper calibrations on the Calibration Selection screen.
16. Ensure all the folder tabs have a Green check mark.
17. Select Next.
18. Verify the current calibrations with the selected calibrations.
19. Select Next.
20. The Transfer Data screen will appear until the process bar reaches 100 percent. This may take up to 30 minutes.
21. Complete all of the terminal-directed data on the Programming Complete screen.
22. Turn OFF the Tech 2®.
23. Disconnect the Tech 2® from the vehicle.

Off-Board Pass-Thru Procedure

Note. Ensure the Tech 2® and the terminal are both equipped with the latest software before performing SPS.

The Off-Board Programming Adapter Kit (J 41207-C) is required when a module must be programmed without having the vehicle present. The adapter allows the module to be turned ON and communicate with the Tech 2®.

Performing Off-Board Pass-Thru Procedure

1. Launch the TIS application in the terminal.
2. Select the Service Programming System.
3. Highlight the following information on the Select Diagnostic Tool and Programming Process Screen: Select Diagnostic Tool Select Pass-Thru. Select Programming Process Identify whether an existing module is being reprogrammed, or a module is being replaced with a new one. Select ECU Location Select Off-Board Programming Adapter.
4. Select Next.
5. Complete all terminal-directed data at the Preparing for Communication/Determine Vehicle screen until Next is highlighted.
6. Select Next.
7. Follow the on-screen instructions for connecting the following components: The control module. The Off-Board Programming Adapter (OBPA), refer to the TIS Users Guide for a listing of OBPA. The Tech 2®.
8. Select Next.
9. Pass-Thru displays the VIN stored in the control module. If a new control module is being programmed, enter the correct VIN of the vehicle.
10. Select Next.
11. Select the appropriate options if the Options screen appears.
12. Select Next.
13. Select the type of programming to be performed from the following categories: Normal Used for updating an existing calibration or programming a new controller. Vehicle Configuration Index (VCI) Used for updating an existing controller or programming a new controller for newer vehicles whose VINs are not yet in the database. Reconfigure Used to reconfigure a vehicle for changes in tire size and axle ratios.
14. Select Next.
15. Select a calibration selection on the Calibration Selection screen, if necessary.
16. Ensure all the desired calibration folder tabs have a Green check mark.
17. Select Next.
18. Verify the current and selected calibration of the control module on the Summary screen.
19. Select Next.
20. Select OK.
21. Select OK.
22. When programming is complete, a Program Controller/Programming Complete screen appears. Follow the on-screen instructions, if any.
23. Select Close.
24. Turn OFF the OBPA.
25. Turn OFF the scan tool.
26. Disconnect the OBPA from the Tech 2 and the control module.

THEFT DETERRENT SYSTEM COMPONENTS

Note. When replacing a theft deterrent control module with an GM Service Parts Operation (SPO) Replacement Part, set up the control module prior to the 10-minute relearn procedure or the 30-minute relearn procedure.

Note. The Body Control Module (BCM) must be programmed with the proper RPO configurations before performing learn procedures. See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT. If replacing the BCM with a GM Service Parts Operations (SPO) replacement part, the module will learn Passlock® sensor data code immediately. The existing PCM however, must learn the new fuel continue password when the BCM is replaced. If replacing a PCM with a GM Service Parts Operations (SPO) replacement part, after programming, these modules will learn the incoming fuel continue password immediately upon receipt of a password message. Once a password message is received, and a password is learned, a learn procedure must be performed to change this password again. A PCM which has been previously installed in another vehicle will have learned the other vehicle's fuel continue password and will require a learn procedure after programming to learn the current vehicle's password.

10-Minute Learn Procedure

1. Connect the Tech 2 to the vehicle.
2. Select REQUEST INFORMATION under SERVICE PROGRAMMING.
3. Disconnect the Tech 2 from the vehicle and connect it to a Techline® terminal.
4. On the Techline® terminal, select THEFT MODULE RE-LEARN under SERVICE PROGRAMMING.
5. Disconnect the Tech 2 from the Techline® terminal and connect it to the vehicle.
6. Turn ignition on, with engine off.
7. Select VTD RE-LEARN under SERVICE PROGRAMMING.
8. Attempt to start the engine, then release the key to on (vehicle will not start).
9. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn off (the vehicle is now ready to relearn the Passlock® Sensor Data Code and/or password on the next ignition switch transition from off to crank).
10. Turn off the ignition, and wait 5 seconds.
11. Start engine (the vehicle has now learned the password).
12. With scan tool, clear any DTCs.

30-Minute Learn Procedure

1. Turn ignition on, with engine off.
2. Attempt to start the engine, then release the key to on (vehicle will not start).
3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn off.
4. Turn off the ignition, and wait 5 seconds.
5. Repeat procedure 2 more times for a total of 3 cycles/30 minutes (the vehicle is now ready to relearn the Passlock® Sensor Data Code and/or passwords on the next ignition switch transition from off to crank).
6. Start the engine (the vehicle has now learned the Passlock® Sensor Data Code and/or password).
7. With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).

Note. When replacing a theft deterrent control module with an GM Service Parts Operation (SPO) Replacement Part, set up the control module prior to the 10-minute relearn procedure or the 30-minute relearn procedure.

Set Up A New Theft Deterrent Control Module

1. Connect a scan tool to the vehicle.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, select Setup New VTD Module in the Vehicle Theft Deterrent, Special Functions data list.
4. Follow the scan tool on-screen instructions.

Note. When replacing a theft deterrent control module with an GM SPO Replacement Part, the module will learn the keys immediately. The existing Powertrain Control Module (PCM) must learn the new fuel continue password when you replace the theft deterrent control module. When replacing a PCM with a GM SPO Replacement Part, the new PCM will learn the incoming fuel continue password immediately after programming and upon receipt of a password message. Once a password message is received and a password is learned, perform the learn procedure to change this password again. A PCM which had been installed in another vehicle will have learned the fuel continue password of the other vehicle's theft deterrent control module. Perform either the 10-minute relearn procedure or the 30-minute relearn procedure after programming to learn the fuel continue password of the current vehicle's theft deterrent control modules. When performing either relearn procedure, all previously learned keys will be erased from the theft deterrent control module's memory. Additional keys may be learned immediately after the first relearn procedure by inserting the additional key and turning the ignition to RUN within 10 seconds of removing the previously learned key. Use only a master key when performing the first relearn procedure. If you use a valet key first, the theft deterrent control module will not allow additional keys to be learned.

10-Minute Relearn Procedure

1. Connect a scan tool to the vehicle.
2. Turn ignition on, with engine off.
3. Insure that all power consuming devices are turned off on the vehicle.
4. With a scan tool, select Request Info. under Service Programming System and follow the scan tool on-screen instructions.
5. Disconnect the scan tool from the vehicle and connect the scan tool to a Techline® Terminal with the current Service Programming System (SPS) software.
6. On the Techline® Terminal, select Service Programming System and follow the Techline® Terminal on-screen instructions.
7. Disconnect the scan tool from the Techline® Terminal and re-connect the scan tool to the vehicle.
8. With a master Passkey® III key, turn ignition on, with engine off.
9. With a scan tool, select Program ECU under Service Programming System.
10. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.
11. Observe the scan tool, after approximately 10 minutes the scan tool will display "Programming Successful, Turn off Ignition". The vehicle is now ready to relearn the key information and/or the passwords on the next ignition switch transition from off to on.
12. Turn off the ignition and wait 5 seconds.
13. With a master Passkey® III key, start engine. The theft deterrent control module has now learned the key transponder information and the PCM has now learned the fuel continue password.
14. Turn off the ignition and wait 15 seconds minimum.
15. With a second master Passkey® III key, start engine. The theft deterrent control module has now learned the second master Passkey® III key transponder information.
16. With a scan tool, clear any DTCs.

Note. Use this procedure after replacement of Passkey® III keys, theft deterrent control module or PCM.

30-Minute Relearn Procedure

1. With a master Passkey® III key (Black), turn on the ignition, with the engine off.
2. Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
3. Turn off the ignition, and wait 5 seconds.
4. Repeat procedure 2 more times for a total of 3 cycles or 30 minutes.
5. With a master Passkey® III key, start engine. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
6. With a scan tool, clear any DTCs.

Remove the coolant recovery reservoir. Rotate the drive belt tensioner counterclockwise and remove the drive belt. Disconnect the electrical connector from the Camshaft Position (CMP) sensor. (Scheme 9) Remove the CMP sensor bolt. Remove the CMP sensor from the engine front cover.

Install the CMP sensor to the engine front cover. Install the CMP sensor bolt. Tighten the bolt to specification. See TORQUE SPECIFICATIONS . Connect the electrical connector to the CMP sensor. Rotate the drive belt tensioner counterclockwise and install the drive belt. Install the coolant recovery reservoir.

Scheme 8

1. Turn OFF the ignition. Disconnect the negative battery cable. Remove the drive belt. Raise and support the vehicle. Remove the right front tire and wheel. Remove the right engine splash shield retainers and the engine splash shield. Remove the torque converter cover. Install the Flywheel Holder (J-37096) to hold the flywheel.
2. Remove the crankshaft balancer retaining bolt. Install the Crankshaft Balancer Remover (J-38197-A). Remove the crankshaft balancer. Remove the crankshaft balancer remover. Disconnect the Crankshaft Position (CKP) sensor electrical connector. Remove the CKP sensor shield. (Scheme 10) DO NOT use a pry bar. Remove the CKP sensor bolts. Remove the CKP sensor.

Scheme 9

1. Install the CKP sensor. Install the CKP sensor bolts. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Install the CKP sensor shield. Connect the CKP sensor electrical connector.
2. Coat the engine front cover seal contact area on the crankshaft balancer, and the seal surface with clean engine oil. Install the crankshaft balancer. Install the crankshaft balancer retaining bolt. Use the Flywheel Holder (J-37096) to keep the flywheel from turning. Tighten the crankshaft balancer bolt to specification.
3. Remove the flywheel holder. Install the torque converter cover. Install the right engine splash shield and the engine splash shield retainers. Install the right front tire and wheel. Tighten wheel lug nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
4. Lower the vehicle. Install the drive belt. Reconnect the negative battery cable. Perform the CKP System Variation Learn Procedure. See «PROGRAMMING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) .

ENGINE COOLANT TEMPERATURE SENSOR

Note. Recover and store used coolant in a used coolant holding tank and submit the used coolant for recycling on a regular basis. Do not pour used coolant down the drain. Ethylene glycol antifreeze is very toxic. Disposing of ethylene glycol into the sewer system or ground water is both illegal and ecologically unsound.

Turn OFF the ignition. Partially drain the cooling system to below the Engine Coolant Temperature (ECT) sensor. (Scheme 11) Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor.

Note. Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

Coat the ECT sensor threads with Thread Sealer (9985253) or the equivalent. Install the ECT sensor. Tighten the ECT sensor to specification. See TORQUE SPECIFICATIONS . Connect the ECT sensor electrical connector. Refill the engine coolant system. See COOLING SYSTEM BLEEDING under COOLING SYSTEM.

Scheme 10

FUEL LEVEL SENSOR

1. Remove fuel sender assembly from fuel tank. See «FUEL SENDER ASSEMBLY»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation). Remove the fuel level sensor electrical connector retaining clip. Disconnect the fuel level sensor electrical connector from under the fuel sender cover.
2. Disconnect the fuel pump electrical connector. Remove the fuel level sensor retaining clip. Squeeze the locking tabs and remove the fuel level sensor from the fuel sender assembly. (Scheme 12) To install, reverse removal procedure.

Scheme 11

Remove the rear compartment floor trim. Remove the fuel sender access panel bolts. (Scheme 30) Remove the fuel sender access panel. Disconnect the Fuel Tank Pressure (FTP) sensor electrical connector. Remove the FTP sensor.

Install the FTP sensor. Connect the FTP sensor electrical connector. Install the fuel sender access panel. Install the fuel sender access panel bolts. Tighten the fuel sender access panel bolts to specification. See TORQUE SPECIFICATIONS . Install the rear compartment floor trim.

HEATED OXYGEN SENSOR

Removal (HO2S 1)

1. Turn OFF the ignition. HO2S 1 is located in exhaust manifold. (Scheme 13) Remove fuel injector sight shield (upper engine cover) from engine. Remove the HO2S 1 retaining clip from the bracket.
2. Disconnect the HO2S electrical connector tab from the HO2S 1 retaining clip. Remove the HO2S electrical connector retainer. Raise and support the vehicle. harness connector. Using Heated Oxygen Sensor Wrench (J-39194), remove the HO2S from the exhaust manifold.

1. A special anti-seize compound is used on the oxygen sensor threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New sensors will have the compound applied to the threads.
2. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation. Coat the threads of the HO2S with Anti-Seize Compound (5613695), if necessary.
3. Install the HO2S and tighten to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Connect HO2S harness connector. Connect the electrical connector tab to the bracket. Install the HO2S electrical connector retainer. Lower vehicle. Install the fuel injector sight shield.

Scheme 12

Removal (HO2S 2)

Turn OFF the ignition. HO2S 2 is located behind catalytic converter. (Scheme 14) Remove fuel injector sight shield (upper engine cover) from engine. Raise and support vehicle. Remove the splash shield. Disconnect the electrical connector retaining tab from the HO2S electrical connector. Disconnect the HO2S electrical connector. Using Heated Oxygen Sensor Wrench (J-39194), remove the HO2S.

1. A special anti-seize compound is used on the oxygen sensor threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away, but the glass beads will remain, making the sensor easier to remove. New sensors will have the compound applied to the threads.
2. If a sensor is removed and is to be reinstalled, the threads must have an anti-seize compound applied before installation. Coat the threads of the HO2S with Anti-Seize Compound (5613695), if necessary.
3. Install the HO2S and tighten to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Connect HO2S electrical connector. Connect the HO2S electrical connector retaining tab. Install the splash shield. Lower vehicle.

Scheme 13

The Intake Air Temperature (IAT) sensor is mounted in the air intake duct. Disconnect the IAT sensor harness connector. Carefully grasp the sensor and with a twisting and pulling motion, remove the IAT sensor from air intake duct. To install, reverse removal procedure.

Removal & Installation (KS 1)

1. Turn OFF the ignition. Drain the cooling system. Raise and support the vehicle. Locate Knock Sensor (KS) to be removed. (Scheme 15) Disconnect the KS electrical connector. Remove the KS.
2. To install, reverse removal procedure. Tighten the KS to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications). Connect the KS electrical connector. Lower the vehicle. Fill the cooling system. See «COOLING SYSTEM BLEEDING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__cooling-system-bleeding) under COOLING SYSTEM.

Scheme 14

Removal & Installation (KS 2)

1. Turn OFF the ignition switch. Raise the vehicle. Remove the bolts from the splash shield. Drain the cooling system. Remove the bolts from the KS heat shield located under the freeze plug. (Scheme 16) Disconnect the wiring harness connector from the knock sensor. Remove the KS from the engine block.
2. To install, reverse removal procedure. Tighten the KS and KS heat shield bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications). Connect the KS electrical connector. Lower the vehicle. Fill the cooling system. See «COOLING SYSTEM BLEEDING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__cooling-system-bleeding) under COOLING SYSTEM.

Scheme 15

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the MAP sensor electrical connector. (Scheme 17) Carefully release the locking tabs holding the MAP sensor to the PCV valve cover just enough to remove the MAP sensor. Pull the MAP sensor straight out of PCV valve cover.

Ensure that the seal is installed on the MAP sensor and that the seal is not damaged. Position and install the MAP sensor to the PCV valve cover. Ensure that the locking tabs engage to hold the MAP sensor to the PCV valve cover. Connect the MAP sensor electrical connector. Install the fuel injector sight shield.

Scheme 16

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the Manifold Absolute Pressure (MAP) sensor electrical connector. (Scheme 18) Disconnect the MAP sensor vacuum hose. Remove the MAP sensor screws. Remove the MAP sensor from the bracket.

Install the MAP sensor. Install the MAP sensor screws. Tighten the screws to specification. See TORQUE SPECIFICATIONS . Connect the MAP sensor electrical connector and the vacuum hose. Install the fuel injector sight shield.

Scheme 17

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the Mass Airflow (MAF) sensor electrical connector. (Scheme 19) Remove the MAF sensor screws. Remove the MAF sensor.

Install the MAF sensor. Install the MAF sensor screws. Tighten the screws to specification. See TORQUE SPECIFICATIONS . Connect the MAF sensor electrical connector. Install the fuel injector sight shield.

Scheme 18

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the Throttle Position (TP) sensor electrical connector. (Scheme 19) Remove the 2 TP sensor screws. Remove the TP sensor.

Note. Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

Install the TP sensor. Apply Loctite® 262 Thread-Locking Compound (1052624) or equivalent to the TP sensor screws. Install the 2 TP sensor screws. Tighten the screws to 2 specification. See TORQUE SPECIFICATIONS . Connect the TP sensor electrical connector. Install the fuel injector sight shield.

Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the boost source and signal hoses from the boost control solenoid. (Scheme 20) Disconnect the boost control solenoid electrical connector. Remove the boost control solenoid retaining nut. Remove the boost control solenoid. To install, reverse removal procedure.

Scheme 19

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Remove the electrical connector from the Idle Air Control (IAC) valve. (Scheme 19) Remove the 2 IAC valve attaching screws. Remove the IAC valve from the throttle body. Remove the IAC valve "O" ring from the IAC valve. Inspect the "O" ring for cracks or damage. Replace the "O" ring if necessary.

1. Measure the distance between the tip of the IAC valve pintle and the mounting surface. (Scheme 21) If the distance is more than 1.10" (28 mm), use finger pressure in order to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve.
2. Lubricate the IAC valve "O" ring with clean engine oil. Install the IAC valve "O" ring on the IAC valve. Install the IAC valve. Install the IAC valve attaching screws and tighten to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications). Connect the IAC valve electrical connector.
3. Perform the following IAC valve learn procedure. Turn ON the ignition, then OFF. Restart the engine and check for proper idle operation. Install the fuel injector sight shield.

Scheme 20

1. Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Disconnect the EVAP canister purge solenoid harness connector. (Scheme 22)or (Scheme 23).
2. Disconnect the EVAP canister purge solenoid purge pipe and vacuum supply hose. Release the retaining tab on the EVAP canister purge mounting bracket and remove the EVAP canister purge solenoid. Inspect for carbon release exiting the EVAP canister purge solenoid. See «EVAP SYSTEM CLEANING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__evap-system-cleaning).

Install the EVAP canister purge solenoid onto the EVAP canister purge solenoid mounting bracket. Connect the EVAP canister purge valve purge pipe and vacuum supply hose. Connect the EVAP canister purge valve harness connector. Install the fuel injector sight shield.

Scheme 21

Scheme 22

EVAP CANISTER VENT VALVE

Note. The EVAP canister vent valve may also be referred to as a EVAP canister vent solenoid or EVAP canister vent solenoid valve.

Raise and support the vehicle. Disconnect the EVAP canister vent valve electrical connector. (Scheme 24) Disconnect the vent hose from the EVAP canister vent valve. Remove the EVAP canister vent valve bolt. Remove the EVAP canister vent valve from the vehicle. To install, reverse removal procedure.

Scheme 23

COOLING SYSTEM BLEEDING

Note. Recover and store used coolant in a used coolant holding tank and submit the used coolant for recycling on a regular basis. Do not pour used coolant down the drain. Ethylene glycol antifreeze is very toxic. Disposing of ethylene glycol into the sewer system or ground water is both illegal and ecologically unsound.

1. Ensure the radiator drain cock is closed. Remove the radiator cap. Fill the radiator and the coolant reservoir to the full cold line with GM Goodwrench® DEX-COOL® or Havoline® DEX-COOL® coolant. To ensure sufficient engine cooling, freezing and corrosion protection, maintain the protection level at -34°F (-37°C). Wait for two minutes and recheck the level of the coolant in the radiator.
2. If necessary, add coolant to radiator until the coolant level is at the base of the radiator fill neck. Install the radiator pressure cap, making sure the arrows on the cap line up with the coolant recovery tube. Place the heater and A/C control in any A/C mode except Max and the temperature in the highest setting. Start the engine and allow to idle until the lower radiator-to-coolant pump hose is hot.
3. Cycle the engine speed up to about 3000 RPM and back to idle five times. Slowly open the bleed valve on the top of the thermostat housing for approximately 15 seconds to expel any trapped air in the cooling system. Close the air bleed valve. Do not overtighten. Allow the engine to cool to outside temperature. Ensure the coolant level in the reservoir and the radiator are at the proper levels.

FUEL SYSTEMS

FUEL SYSTEM PRESSURE RELEASE

1. Turn OFF the ignition. Disconnect the negative battery cable in order to avoid possible fuel discharge if an accidental attempt is made to start the engine. Remove fuel injector sight shield (upper engine cover) from engine. Remove the fuel pressure connection cap from the fuel rail.
2. Connect Fuel Pressure Gauge (J-34730-1A) to the fuel pressure connection. Wrap a shop towel around the fuel pressure connection while connecting the fuel pressure gauge in order to avoid spillage. Install the bleed hose into an approved container and open the valve to bleed the system pressure.
3. The fuel connections are now safe for servicing. Drain any fuel remaining in the fuel pressure gauge into an approved container. Remove the fuel pressure gauge.

Removal (Quick-Connect Fitting - With Metal Collar)

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Remove the retainer from the quick-connect fitting. Blow any dirt out of the fitting, using compressed air.
2. Choose the correct Quick-Connect Separator tool from Tool Set (J-37088-A) for the size of the fitting. Insert the quick-connect separator into the female connector, then push inward to release the locking tabs. (Scheme 25)
3. Pull the connection apart. Using a clean shop towel, wipe off the male pipe end. Inspect both ends of the fitting for dirt and burrs. If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent damage to the "O" ring sealing surface. Clean or replace the components and assemblies as required.

Apply a few drops of clean engine oil to the male pipe end. Push both sides of the fitting together to cause the retaining tabs to snap into place. Once installed, pull on both sides of the fitting to make sure the connection is secure. Install the retainer over the quick-connect fitting.

Scheme 24

Removal (Quick-Connect Fitting - With Plastic Collar)

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Using compressed air, blow any dirt out of the quick-connect fitting.
2. Squeeze the plastic tabs of the male end connector. (Scheme 26) Pull the connection apart. Using a clean shop towel, wipe off the male pipe end. Inspect both ends of the fitting for dirt and burrs.
3. If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent damage to the "O" ring sealing surface. Clean or replace the components and assemblies as required.

Apply a few drops of clean engine oil to the male pipe end. Push both sides of the fitting together to cause the retaining tabs to snap into place. Once installed, pull on both sides of the fitting to make sure the connection is secure.

Scheme 25

FUEL FILLER TUBE

Note. Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

Note. This procedure is for removal of the fuel filler tube ONLY. In order to remove the fuel filler hose connecting the fuel filler tube to the fuel tank. Removal of the fuel tank is necessary.

1. Drain the fuel tank below the level of the fuel filler hose. See «FUEL TANK DRAINING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank-draining). Raise and support vehicle. Open the fuel filler door and remove fuel filler cap.
2. Remove the sealing ring from around the fuel filler tube. (Scheme 27) Raise and support the vehicle. Remove the fuel filler tube cover. Remove the bolt from the fuel filler tube ground wire.
3. Loosen the fuel filler tube hose clamp. Remove the fuel filler tube from the fuel filler hose. If it is necessary to remove the fuel filler hose, remove the fuel tank. See «FUEL TANK»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank).

1. Install the fuel tank if previously removed. See «FUEL TANK»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank) . Install the fuel filler tube into the fuel filler hose. Position the fuel filler tube for best fit and alignment then secure the fuel filler tube hose clamp.
2. Tighten the hose clamp to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Install the bolt to the fuel filler tube ground wire. Tighten the bolt to specification. Install the fuel filler tube cover. Lower the vehicle. Install the sealing ring around the fuel filler tube. Add fuel to the fuel tank. Inspect for fuel leaks. Install the fuel filler cap and close the fuel filler door.

Scheme 26

FUEL FILTER

Note. There is not a service interval for fuel filter replacement. Only replace the fuel filter if the filter is restricted. Inspect the fuel tank internally and clean the fuel tank if you find a restricted fuel filter.

1. Fuel filter is located underneath vehicle. (Scheme 28) Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Raise and support the vehicle.
2. Disconnect the quick-connect fitting at the inlet of the fuel filter. See «FUEL LINE DISCONNECT FITTINGS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation). Disconnect the threaded nut fitting at the outlet of the fuel filter. Drain any remaining fuel into an approved gasoline container. Remove the fuel pipe "O" ring. Remove the fuel filter.

Note. Cap the fittings and plug the holes when servicing the fuel system in order to prevent dirt and other contaminants from entering the open pipes and passages.

1. Remove the protective caps from the new fuel filter. Install the new plastic connector retainer on the fuel filter inlet. Install the new retainer in the same position as on the old fuel filter. Lubricate the new fuel pipe "O" ring with clean engine oil. Install the fuel pipe "O" ring. Slide the fuel filter into place.
2. Connect the quick-connect fitting at the inlet side of the fuel filter. Install the threaded nut fitting to the outlet of the fuel filter. Use a back-up wrench in order to prevent the fuel filter from turning. Tighten the fuel filter outlet pipe fitting to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) .
3. Lower the vehicle. Connect the negative battery cable. Perform the following procedure in order to inspect for leaks. Turn ON the ignition for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition. Inspect for fuel leaks. Install the fuel injector sight shield.

Scheme 27

See FUEL LEVEL SENSOR under SENSORS.

1. The fuel pressure regulator is located on the fuel rail. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Clean any dirt from the fuel pressure regulator retaining ring. Remove the vacuum line from the pressure regulator.
2. Remove the snap ring. (Scheme 29) Using a shop towel to catch any spilled fuel, lift and twist the fuel pressure regulator in order to remove the fuel pressure regulator from the fuel pressure regulator housing.
3. Remove the regulator small "O" ring. Remove the regulator filter screen. Remove the regulator large "O" ring. Remove the regulator back-up "O" ring. Cover the fuel pressure regulator housing to prevent contamination from entering the fuel system.

1. If a new fuel pressure regulator is not being installed, install new "O" rings on the fuel pressure regulator. Lubricate the "O" rings lightly with clean engine oil. Install the regulator back-up "O" ring. Install the regulator large "O" ring. Install the regulator filter screen. Install the regulator small "O" ring. Install the fuel pressure regulator in the fuel pressure regulator housing. Install the snap ring.
2. Connect the vacuum line to the fuel pressure regulator. Tighten the fuel fill cap. Connect the negative battery cable. Perform the following procedure in order to inspect for leaks. Turn ON the ignition for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition. Inspect for fuel leaks. Install the fuel injector sight shield.

Scheme 28

The fuel pump is attached to the fuel sender assembly inside the fuel tank. See FUEL SENDER ASSEMBLY for removal and installation.

FUEL RAIL & INJECTORS

Note. An 8-digit identification number is located on the left side fuel rail assembly. Refer to this identification number if servicing or part replacement is required. Fuel injector "O" rings should always be replaced whenever the fuel injectors are serviced.

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release) . Clean the fuel rail assembly and connections. Disconnect the fuel feed pipe and return pipe at the fuel rail. See «FUEL LINE DISCONNECT FITTINGS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) .
2. Disconnect the vacuum line from the fuel pressure regulator. Remove the ignition coil wires. Disconnect the 6 injector electrical connectors. Remove the fuel rail hold-down bolts. Carefully raise the injector using Fuel Injector Remover (J-43013). Remove the fuel rail with equal force on both sides of the fuel rail.
3. To remove injector(s) from the fuel rail, remove the fuel injector retainer clip. Remove the fuel injector from the fuel rail. Remove and discard the fuel injector upper "O" ring.

1. Lubricate the new injector upper "O" ring seal with clean engine oil. Install the new injector "O" ring seal on the injector. Install retainer clip on the injector. Push the fuel injector into the fuel rail injector socket with the electrical connector facing outward. The retainer clip locks on to a flange on the fuel rail injector socket.
2. "O" rings must be replaced on all components that are serviced. Lightly oil the fuel injector "O" rings with clean engine oil. Place the fuel rail assembly on the intake manifold. Seat the fuel injectors by hand. Install the fuel rail hold-down bolts.
3. Tighten the fuel rail hold-down bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Connect the 6 fuel injector electrical connectors. Connect the fuel feed and return pipes to the fuel rail tubes. Connect the vacuum line to the fuel pressure regulator. Install the ignition coil wires.
4. Tighten the fuel fill cap. Connect the negative battery cable. Perform the following procedure in order to inspect for leaks. Turn ON the ignition for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition. Inspect for fuel leaks. Install the fuel injection sight shield.

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release) . Clean the fuel rail assembly and connections. Disconnect the fuel feed pipe and return pipe at the fuel rail. See «FUEL LINE DISCONNECT FITTINGS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) .
2. Disconnect the vacuum line from the fuel pressure regulator. Remove the ignition coil wires from the retainer clips on top of the supercharger. Remove the rear generator mounting bracket with the EVAP canister purge solenoid valve attached.
3. Remove the bypass valve actuator. See «BYPASS VALVE ACTUATOR»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) under AIR INDUCTION SYSTEMS. Disconnect the fuel injector electrical connectors. Remove the fuel injector electrical harness clips holding harness to front of the fuel rail. Remove the fuel rail hold-down nuts. Remove the fuel rail with equal force on both sides of the fuel rail.
4. To remove injector(s) from the fuel rail, remove the fuel injector retainer clip. Remove the fuel injector from the fuel rail. Remove and discard the fuel injector upper "O" ring.

1. Lubricate the new injector upper "O" ring seal with clean engine oil. Install the new injector "O" ring seal on the injector. Install retainer clip on the injector. Push the fuel injector into the fuel rail injector socket with the electrical connector facing outward. The retainer clip locks on to a flange on the fuel rail injector socket.
2. The "O" rings must be replaced on all components that are serviced. Lightly oil the fuel injector "O" rings with clean engine oil. Place the fuel rail assembly on the intake manifold. Seat the fuel injectors by hand. Install the fuel rail hold-down nuts. Tighten the fuel rail hold-down nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications).
3. Install the fuel injector electrical harness clips holding harness to the front of fuel rail. Connect the 6 fuel injector electrical connectors. Install the bypass valve actuator. (Scheme 20) Install the rear generator mounting bracket with the EVAP canister purge solenoid valve. Install the ignition coil wires to the retainer clips to the top of supercharger. Connect the vacuum line to the fuel pressure regulator.
4. Connect the fuel feed pipe and return pipe to the fuel rail. Connect the negative battery cable. Perform the following procedure in order to inspect for leaks. Turn ON the ignition for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition. Inspect for fuel leaks. Install the fuel injection sight shield.

Scheme 29

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Drain the fuel tank. See «FUEL TANK DRAINING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank-draining).
2. Remove the rear compartment floor trim. Remove the fuel sender access panel bolts. (Scheme 30) Remove the fuel sender access panel. Disconnect the fuel sender quick-connect fittings. See «FUEL LINE DISCONNECT FITTINGS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation). Disconnect the fuel sender electrical connector. Disconnect the Fuel Tank Pressure (FTP) sensor electrical connector.
3. Remove the fuel sender retaining ring using Fuel Sender Lock Nut Wrench (J-39765). Do Not handle the fuel sender assembly by the fuel pipes. The amount of leverage generated by handling the fuel pipes could damage the joints. When removing the fuel sender assembly from the fuel tank, the reservoir bucket on the fuel sender is full of fuel.
4. The fuel sender must be tipped slightly during removal in order to avoid damage to the float. Place any remaining fuel into an approved container once the fuel sender is removed from the fuel tank. Remove the fuel sender assembly. Clean the fuel sender sealing surfaces. Inspect the fuel sender sealing surfaces.

Note. Ensure that the fuel sender assembly retaining ring is fully seated within the tab slots on the fuel tank. Always replace the fuel sender seal when reinstalling the fuel sender assembly.

1. Position the new fuel sender seal on the fuel tank. Do not fold over or twist the fuel pump strainer when installing the fuel sender assembly, as this will restrict fuel flow. Also, ensure that the fuel pump strainer does not block full travel of float arm. Install the fuel sender assembly and the fuel sender lock ring using Fuel Sender Lock Nut Wrench (J-39765).
2. Connect the quick-connect fittings at the fuel sender. Connect the fuel sender electrical connector. Connect the FTP sensor electrical connector. Add fuel to the fuel tank. Install the fuel tank filler pipe cap. Connect the negative battery cable.
3. Perform the following procedure in order to inspect for leaks. Turn ON the ignition for 2 seconds. Turn OFF the ignition for 10 seconds. Turn ON the ignition. Inspect for fuel leaks. Install the fuel sender access panel. Install the fuel sender access panel bolts.
4. Tighten the fuel sender access panel bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Install the rear compartment floor trim. Install the fuel injector sight shield.

FUEL SYSTEM CLEANING

Note. When flushing the fuel tanks, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state, and federal laws and regulations.

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release) . Remove the fuel tank. See «FUEL TANK»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank) . Remove the fuel sender assembly. See «FUEL SENDER ASSEMBLY»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) .
2. Inspect the fuel sender strainer. Replace a contaminated strainer and inspect the fuel pump. Inspect the fuel pump inlet for dirt and debris. Replace the fuel pump if you find dirt or debris in the fuel pump inlet. Flush the fuel tank with hot water. Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to be sure that the removal of the water from the fuel tank is complete.
3. Allow the tank to dry completely before reassembly. Install the fuel sender assembly. See «FUEL SENDER ASSEMBLY»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) . Install the fuel tank. See «FUEL TANK»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank) .

FUEL TANK

1. Release fuel system pressure. See «FUEL SYSTEM PRESSURE RELEASE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-system-pressure-release). Drain the fuel tank. See «FUEL TANK DRAINING»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__fuel-tank-draining). Raise and support vehicle.
2. Remove the filler pipe opening cover. (Scheme 27) Disconnect the fuel fill hose from the fuel fill pipe. Remove the rear suspension support assembly. See appropriate REAR article in SUSPENSION.
3. Disconnect the fuel feed pipe and the fuel return pipe. See «FUEL LINE DISCONNECT FITTINGS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation). Disconnect the evaporative emission pipe from the EVAP canister.
4. Remove the fuel and EVAP retainer from the frame. Disconnect the fuel sender electrical connector. Disconnect the fuel sender electrical harness from the retainers. Support the fuel tank. Remove the fuel tank strap bolts. Remove the fuel tank.

1. Position and support the fuel tank with the aid of an assistant. Install the fuel tank straps. Install the fuel tank strap bolts. Tighten the fuel tank strap bolts to «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications) . Connect the fuel sender electrical connector.
2. Install the fuel sender electrical harness into the retainers. Install the fuel and EVAP retainer to the frame. Connect the EVAP pipe to the EVAP canister. Connect the fuel feed pipe and the fuel return pipe. Install the rear suspension support assembly. See appropriate REAR article in SUSPENSION. Connect the fuel filler hose to the fuel filler pipe. Tighten the clamp to specification.
3. Install the filler pipe opening cover. Lower the vehicle. Add fuel to the fuel tank. Install the fuel tank filler pipe cap. Connect the negative battery cable. Perform the following procedure in order to inspect for leaks. Turn ON the ignition switch for 2 seconds. Turn OFF the ignition switch for 10 seconds. Turn ON the ignition switch. Inspect for fuel leaks. Install the fuel injector sight shield.

FUEL TANK DRAINING

Turn OFF the ignition. Disconnect the negative battery cable. Remove the fuel tank filler pipe cap. Use a hand-operated fuel pump device in order to drain the fuel through the fuel tank filler pipe. Install the fuel tank filler pipe cap. Connect the negative battery cable.

See IDLE AIR CONTROL VALVE under MOTORS & SOLENOIDS

See THROTTLE BODY under AIR INDUCTION SYSTEMS

See CAMSHAFT POSITION SENSOR under SENSORS.

See CRANKSHAFT POSITION SENSOR under SENSORS.

1. Turn OFF the ignition. Note the position from which the wires are removed and disconnect the spark plug wires from the ignition coils. Remove the 2 screws that secure the ignition coil to the ignition control module. Remove the ignition coil.
2. To install, reverse removal procedure. Tighten the coil screws to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications). Connect the spark plug wires to the ignition coils. (Scheme 31)

Scheme 30

1. Disconnect all the electrical connectors at the Ignition Control Module (ICM). Note the position of the spark plug wires for installation and disconnect the spark plug wires from the ignition coils. Remove the screws securing the coil assemblies to the ignition control module.
2. Remove the coils from the ignition control module. Remove the fasteners securing the ignition control module assembly to the engine. Remove the ignition control module from the bracket.
3. To install, reverse removal procedure. Tighten the ignition coil screws to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications). Connect the spark plug wires to the ignition coils. (Scheme 31)

See KNOCK SENSOR under SENSORS.

Turn OFF the ignition. Remove fuel injector sight shield (upper engine cover) from engine. Note position of the spark plug wires before removing the wires. Twist the spark plug boot 1/2 turn before removing the boot. Remove the spark plug wires from the spark plugs. Remove the spark plugs from the engine.

Gap the spark plugs to.060" (1.52 mm). Install the spark plugs. Tighten the spark plugs to specification. See TORQUE SPECIFICATIONS . Install the spark plug wires to the spark plugs. Install fuel injector sight shield.

EGR SYSTEM CLEANING

Whenever the Exhaust Gas Recirculation (EGR) valve is removed the EGR system should be inspected and cleaned if necessary. This will ensure that the EGR system will function properly under all operating conditions. Proper EGR system service consists of the following.

1. EGR System Diagnosis: Diagnosis of the EGR system should be performed if Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTC) are set. See «DIAGNOSTIC TROUBLE CODE DEFINITIONS»(/buick/park-avenue/ii-2002-2005/remont/testing-diagnostics/#engine-control-system-self-diagnostics-38l__diagnostic-trouble-code-definitions) in SELF-DIAGNOSTICS - 3.8L BONNEVILLE, GRAND PRIX, IMPALA, LESABRE, MONTE CARLO, PARK AVENUE & REGAL article.
2. EGR Valve Pipe Cleaning & Checking For Leaks Turn OFF the ignition. Clean and check the EGR pipe from the exhaust manifold to the EGR valve. See «EGR VALVE PIPE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__egr-valve-inlet-pipe) .
3. EGR Valve Cleaning If the EGR system is operating correctly, the EGR valve can be removed, checked for deposits, cleaned, and re-installed. Use the following procedure for this operation. Remove the EGR valve from the engine. See «EGR VALVE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__egr-valve) . While holding the EGR valve base in your hand, try to rotate the connector housing. Replace the valve if it exhibits looseness. Inspect the EGR valve pintle and seat for deposits. Use a cloth or other suitable soft device to remove deposits. Remove all loose particles. If the deposits are such that pintle/base interface cannot be cleaned adequately to allow the pintle to seal against the seat, replace the valve. Damage to the powdered metal EGR valve base will occur if cleaned with solvents, sharp tools, a wire brush or wheel, or by sand blasting. Cleaning by these methods is not recommended. Install EGR valve on the engine using a new gasket.

EGR VALVE

Note. Whenever the Exhaust Gas Recirculation (EGR) valve is removed, the EGR system should be inspected and cleaned if needed. This will ensure that the EGR system will function properly under all operating conditions. See EGR SYSTEM CLEANING .

Turn OFF the ignition. Disconnect the electrical connector from the Exhaust Gas Recirculation (EGR) valve. (Scheme 32) Remove the two EGR valve retaining nuts. Remove the EGR valve. Remove the gasket from the EGR valve adapter. Clean the EGR valve adapter from dirt and debris.

Install a new gasket on the EGR adapter. Install the EGR valve and two nuts. Tighten the nuts to specification. See TORQUE SPECIFICATIONS . Connect the EGR valve electrical connector.

Scheme 31

EGR VALVE INLET PIPE

Note. The EGR valve inlet pipe may also be referred to as a EGR valve adapter pipe.

1. Remove the Exhaust Gas Recirculation (EGR) valve. See «EGR VALVE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__egr-valve).
2. Remove the EGR valve outlet pipe. See «EGR VALVE OUTLET PIPE»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation). Remove the EGR valve inlet pipe mounting bolt from the exhaust manifold. (Scheme 33) Remove the mounting bolt and the stud from the EGR valve inlet pipe bracket. Remove the EGR valve inlet pipe assembly.

Install the EGR valve inlet pipe assembly. Install the mounting bolt and the stud to the EGR valve inlet pipe bracket. Tighten the bolt and stud to specification. See TORQUE SPECIFICATIONS . Install the EGR valve inlet pipe bolt to the exhaust manifold. Tighten the bolt to specification. Install the EGR valve outlet pipe. Install the AIR pump outlet pipe, if applicable. Install the EGR valve.

Scheme 32

1. Remove the mounting bolt that attaches the Exhaust Gas Recirculation (EGR) outlet pipe flange to the intake manifold. (Scheme 34)
2. Remove the nut that attaches the EGR outlet pipe to the EGR valve inlet pipe assembly. Remove the EGR valve outlet pipe. To install, reverse removal procedure. Tighten the EGR valve outlet pipe bolt/nut to specification. See «TORQUE SPECIFICATIONS»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation__torque-specifications).

Scheme 33

The EVAP canister is located underneath rear of vehicle. see scheme 35 Raise and support vehicle. Note location and disconnect hoses from EVAP canister. Remove EVAP canister bracket attaching nuts. Remove the EVAP canister bracket and canister. To install, reverse removal procedure. Tighten nuts to specification. See TORQUE SPECIFICATIONS.

Scheme 34

EVAP CANISTER PURGE SOLENOID

Note. EVAP canister purge solenoid may also be referred to as EVAP canister purge valve or EVAP canister purge solenoid valve.

See EVAP CANISTER PURGE SOLENOID under MOTORS & SOLENOIDS.

See EVAP CANISTER VENT VALVE under MOTORS & SOLENOIDS.

EVAP SYSTEM CLEANING

Inspection Procedure

1. Turn OFF the ignition off. Remove the EVAP canister purge solenoid. See «EVAP CANISTER PURGE SOLENOID»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) under MOTORS & SOLENOIDS. Lightly tap the EVAP canister purge solenoid on a hard surface.
2. Inspect for carbon particles exiting either of the vacuum ports. If no carbon particles were detected, but a blockage was detected during a diagnostic procedure, install the original EVAP canister purge valve. Continue with the cleaning procedure.
3. If carbon particles are found during the inspection procedure, continue with the cleaning procedure. If a diagnostic procedure directed you to replace the EVAP canister purge valve and no carbon particles were detected, replace the EVAP canister purge solenoid. Return to the diagnostic procedure that sent you here.

Cleaning Procedure

1. Raise and support vehicle. Remove the EVAP canister. See «EVAP CANISTER»(/buick/park-avenue/ii-2002-2005/remont/removal-installation/#engine-controls-removal-installation) . Turn off the main valve on the EVAP Pressure/Purge Diagnostic Station (J-41413).
2. Disconnect the hose from the diagnostic station pressure regulator. Using a section of vacuum hose, connect one end onto the diagnostic station pressure regulator. Connect the other end of the vacuum hose to the canister side of the purge pipe.
3. Turn on the main nitrogen cylinder valve and continue to discharge nitrogen for 15 seconds. If the nitrogen does not dislodge the carbon particles, replace the purge pipe. Return the EVAP pressure/purge diagnostic station to the stations original condition.
4. Install a new EVAP canister. Lower the vehicle. Install a new EVAP canister purge valve. Return to the diagnostic procedure that sent you here.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• DIAGNOSTIC TROUBLE CODE DEFINITIONS
• BOOST CONTROL SOLENOID
• BOOST CONTROL SOLENOID
• TORQUE SPECIFICATIONS
• COOLING SYSTEM BLEEDING
• THROTTLE BODY
• CRANKSHAFT POSITION SENSOR VARIATION RELEARN PROCEDURE
• EVAP SYSTEM CLEANING
• FUEL SYSTEM PRESSURE RELEASE
• FUEL TANK DRAINING
• FUEL TANK
• FUEL LEVEL SENSOR
• EGR VALVE PIPE
• EGR VALVE
• EGR SYSTEM CLEANING
• EVAP CANISTER PURGE SOLENOID
• EVAP CANISTER VENT VALVE