Starting System Cadillac Escalade GMT800

DESCRIPTION & OPERATION

The PG-260 Series and Hitachi-S14-100B are non-repairable starter motors. It has pole pieces that are arranged around the armature within the starter housing. When the solenoid windings are energized, the pull-in winding circuit is completed to ground through the starter motor. The hold-in winding circuit is completed to ground through the solenoid. The windings work together magnetically to pull in and hold in the plunger. The plunger moves the shift lever. This action causes the starter drive assembly to rotate on the armature shaft spline as it engages with the flywheel ring gear on the engine. At the same time, the plunger closes the solenoid switch contacts in the starter solenoid. Full battery voltage is then applied directly to the starter motor and it cranks the engine.

As soon as the solenoid switch contacts close, current stops flowing thorough the pull-in winding as battery voltage is now applied to both ends of the windings. The hold-in winding remains energized; its magnetic field is strong enough to hold the plunger, shift lever, starter drive assembly, and solenoid switch contacts in place to continue cranking the engine. When the engine starts, the pinion gear overrun sprag protects the armature from excessive speed until the switch is opened.

When the ignition switch is released from the CRANK position, voltage is removed from the starter solenoid S terminal. Current flows from the motor contacts through both windings to ground at the end of the hold-in winding. However, the direction of the current flow through the pull-in winding is now in the opposite direction of the current flow when the winding was first energized.

The magnetic fields of the pull-in and hold-in windings now oppose one another. This action of the windings, along with the help of the return spring, cause the starter drive assembly to disengage and the solenoid switch contacts to open simultaneously. As soon as the contacts open, the starter motor is turned off.

STARTER APPLICATION

STARTER APPLICATION

TROUBLE SHOOTING

Note. For information not covered in this article, see STARTER - GENERAL TROUBLE SHOOTING .

Note condition and operation of SECURITY indicator light (if equipped). If SECURITY indicator light stays on or flashes continuously, repair anti-theft system as necessary. See THEFT DETERRENT . Check starter solenoid terminals and battery grounds. Check for proper installation of aftermarket electronic equipment. Check IGN-A (40-amp) fuse located in underhood fuse/relay center. Check CRANK (10-amp) fuse, located in instrument panel fuse block. If problem is found repair as necessary. If problem is not found, perform self-diagnostics. See SELF-DIAGNOSTIC SYSTEM .

DIAGNOSTIC STARTING POINT

Begin the system diagnosis with the ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK . The Diagnostic System Check will provide the following information

1. The identification of the control module(s) which command the system.
2. The ability of the control module(s) to communicate through the serial data circuit.
3. The identification of any stored diagnostic trouble codes (DTCs) and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

ON-VEHICLE TESTING

Note. Before making electrical checks, visually inspect all terminals for clean, tight connections. Ensure all starting system related fuses are okay. Ensure battery is in good condition prior to testing starting system. Ensure charging system is okay. See GENERATORS & REGULATORS for Utility (SUV) models and GENERATORS & REGULATORS for Pickup models.

ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK

1. Did you perform the Battery Inspection/Test? If so, go to next step. If not, go to «BATTERY TESTING & INSPECTION (NON-HP2)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__battery-testing-inspection-non-hp2) .
2. Install a scan tool. Does the scan tool power up? If so, go to step 4 . If not, go to «SCAN TOOL DOES NOT POWER UP»(/cadillac/escalade/gmt800-2001-2006/remont/communication-devices/#data-link-communications-system) . NOTE: The engine may start during the following step. Turn off the engine as soon as you have observed the Crank power mode.
3. Access the Class 2 Power Mode in the Diagnostic Circuit Check on the scan tool. Rotate the ignition switch through OFF, RUN, and CRANK positions while observing the Class 2 Power Mode on the scan tool. Does the Class 2 Power Mode reading match the ignition switch positions for OFF, RUN and CRANK positions? If so, go to next step. If not, go to «POWER MODE MISMATCH»(/cadillac/escalade/gmt800-2001-2006/remont/communication-devices/#body-control-system) .
4. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition. Turn ON the ignition, with the engine OFF. Attempt to communicate with each module on the Class 2 serial data circuit. If using a Tech 2, obtain this information using the Class 2 Message Monitor feature. Does the scan tool communicate with any module on the Class 2 serial data circuit? If so, go to next step. If not, go to «SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE»(/cadillac/escalade/gmt800-2001-2006/remont/communication-devices/#data-link-communications-system)
5. The symptom list in Symptoms will determine the correct diagnostic procedure to use. Select the Display DTCs function for each module. If using a Tech 2, use the Class 2 DTC Check feature in order to determine which modules have DTCs set. Record all of the displayed DTCs the DTC status and the module which set the DTC. Does the scan tool display any DTCs? If so, go to next step. If not, go to «ENGINE ELECTRICAL SYMPTOMS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__engine-electrical-symptoms) .
6. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed. Does the scan tool display any DTC beginning with "U"? If so, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate SELF-DIAGNOSTICS article. If not, go to next step.
7. Does the scan tool display any DTC beginning with "P"? If so, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate SELF-DIAGNOSTICS article. If not, go to next step.
8. Does the scan tool display any DTC beginning with "B"? If so, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate SELF-DIAGNOSTICS article. If not, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS in in appropriate SELF-DIAGNOSTICS article .

BATTERY TESTING & INSPECTION (NON-HP2)

Note. The battery test using the Battery Tester (J-42000) requires correct connections to the battery terminals. A failure to obtain the correct connections during the test may result in a failed test on a good battery. Use the Out of Vehicle test for each battery when testing a vehicle with dual batteries.

Follow these instructions in order to avoid an incorrect diagnosis because of connections

1. If testing the vehicle with the battery cables still connected, wiggle the battery tester clips on the terminal bolt. This may cut through any coating or through any oxidation that may be present on the bolt. Even NEW bolts contain a protective coating that may insulate or cause a resistance in the test circuit.
2. If correct connections to the battery terminal bolts in the vehicle are in doubt, perform the following steps: Disconnect the negative battery cable. Disconnect the positive battery cable. Install the test adapters on the terminals. Follow the instructions for testing a removed battery.
3. If the tester displays a REPLACE BATTERY or BAD CELL-REPLACE result for a battery tested in the vehicle with the battery cables connected, perform the following steps: Disconnect the negative battery cable. Disconnect the positive battery cable. Install the tester adapters. NOTE: Always write the test code displayed by the tester on the repair order for any warranty purposes. The number is a unique code that describes the test data for a particular battery at a particular time. The test code may occasionally repeat when you retest the same battery. More often, each test will result in a different code. Use the test code from the second, or Out of Vehicle test. Follow the instructions for testing a removed battery. Replace the battery only if the second test shows a REPLACE BATTERY or BAD CELL-REPLACE result. Use the test code from the second test for any warranty purposes.
4. Use the correct terminal adapters. DO NOT use any common bolts or a combination of bolts, of nuts, and of washers as adapters when testing the battery. Use the test adapters that are provided with the battery tester or GM Terminal Adapters (12303040). If the adapters that are provided with the battery tester require replacement, use GM (12303040). Any other adapter may not contact the correct areas of the battery terminal, causing a resistance that may result in an invalid battery test result.

Note. Manufacturer recommends using Battery Tester (J-42000) for testing battery. Follow instructions provided with tester.

1. Inspect battery for a cracked, broken or damaged case. If battery is okay, go to next step. If battery case is not okay, go to step 19 .
2. Compare battery Cold Cranking Amperage (CCA) and Reserve Capacity (RC) to specifications. See «BATTERY SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system) table. If battery meets or exceeds specifications, go to next step. If battery does not meet or exceed specifications, go to step 19 . BATTERY SPECIFICATIONS Application Specification C/K Series (Pickup & Utility) Standard Replacement Battery Number 78-6YR Cold Cranking Amps 600 Amps Reserve Capacity 115 Minutes Optional Replacement Battery Number 78-7YR Cold Cranking Amps 770 Amps Reserve Capacity 115 Minutes Optional (Dual Batteries) GM Pt.# 19001814
3. Inspect battery hydrometer display. If hydrometer display shows a Yellow dot, go to next step. If hydrometer display does not show a Yellow dot, go to step 5 .
4. Using a small screwdriver, tap top of hydrometer display to dislodge any air bubbles inside. If hydrometer display still shows a Yellow dot, go to step 19 . If hydrometer display does not show a Yellow dot, go to next step.
5. Turn ignition switch off. Attempt to rotate negative battery cable connector clockwise with light finger pressure. If negative connector rotates, go to next step. If negative connector does not rotate, go to step 7 .
6. Use a torque wrench in order to verify the torque to loosen the negative battery terminal bolt. If torque is equal to or greater than specification, go to step 8 . If torque is less than specification, go to next step.
7. Disconnect negative battery cable and go to step 9 .
8. Disconnect negative battery cable. Inspect battery and cable terminals for corrosion and defects. Repair as necessary. Go to next step.
9. Attempt to rotate positive battery cable connector clockwise with light finger pressure. If battery cable rotates, go to next step. If battery cable does not rotate, go to step 11 .
10. Use a torque wrench in order to verify the torque to loosen the positive battery terminal bolt. If torque is equal to or greater than specification, go to step 12 . If torque is below specification, go to next step.
11. Disconnect positive battery cable and go to step 13 .
12. Disconnect positive battery cable. Inspect battery and cable terminals for corrosion and defects. Repair as necessary. Go to next step.
13. Clean and wire brush lead face of both battery terminals and metal contact surfaces on both cable connectors. Remove bolts from both battery cable connectors and inspect for corrosion and defects. Repair or replace as necessary. If battery and cables terminals are clean and in good condition, go to next step.
14. Connect positive battery cable to battery and tighten bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) . Go to next step.
15. Connect negative battery cable to battery and tighten bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) . Go to next step.
16. Ensure all electrical loads are off. Follow manufacturers instructions and install Battery Tester (J-42000) to vehicle battery. Follow any instructions displayed on battery tester. If battery tester passed battery, go to next step. If battery tester did not pass battery, go to step 18 .
17. Press CODE button on battery tester. Record displayed code on vehicle repair order for warranty purposes. Did you complete this action? If so, battery is okay.
18. Press CODE button on battery tester. Record displayed code on vehicle repair order for warranty purposes. Replace battery.
19. Replace battery.

SELF-DIAGNOSTIC SYSTEM

Note. Diagnostic trouble code tests are written specifically for use with GM Tech I or Tech II scan tools. Generic scan tool can be used but may have limited functions. This article only covers the portion of those systems which relates to starting system diagnosis. For further information, see SELF-DIAGNOSTICS for appropriate system.

ENGINE ELECTRICAL SYMPTOMS

Note. The following steps must be completed before using the symptom tables.

1. Perform «ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__engine-electrical-diagnostic-system-check) before using the Symptom Tables in order to verify that all of the following are true: There are no DTCs set. The control module(s) can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to one of the following system operations: See «DESCRIPTION & OPERATION»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__description-operation) . See DESCRIPTION & OPERATION in «GENERATORS & REGULATORS»(ref-167946) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Starting and Charging Systems. See «CHECKING AFTERMARKET ACCESSORIES»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. See INTERMITTENT OR POOR CONNECTIONS .

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. See «STARTER SOLENOID DOES NOT CLICK»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__starter-solenoid-does-not-click) .
2. See «STARTER SOLENOID CLICKS, ENGINE DOES NOT CRANK»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__starter-solenoid-clicks-engine-does-not) .
3. See «ENGINE CRANKS SLOWLY»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__engine-cranks-slowly) .
4. See «BATTERY TESTING & INSPECTION (NON-HP2)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__battery-testing-inspection-non-hp2) .
5. See «STARTER MOTOR NOISE DIAGNOSIS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__starter-motor-noise-diagnosis) .

CHECKING AFTERMARKET ACCESSORIES

DO NOT connect aftermarket accessories into the following circuits

1. SIR circuits, all such circuits are indicated on wiring diagrams with the SIR symbol.
2. OBD II circuits, all such circuits are indicated on circuit diagrams with the OBD II symbol.

Always check for aftermarket accessories (non-OEM) as the first step in diagnosing electrical problems. If the vehicle is so equipped, disconnect the system to verify that these add-on accessories are not the cause of the problems.

Possible causes of vehicle problems related to aftermarket accessories include

1. Power feeds connected to points other than the battery.
2. Antenna location.
3. Transceiver wiring located too close to vehicle electronic modules or wiring.
4. Poor shielding or poor connectors on antenna feed line.
5. Check for recent Technical Service Bulletins (TSB) detailing installation guidelines for aftermarket accessories.

INTERMITTENT OR POOR CONNECTIONS

Note. Tools Required: GM-Approved Terminal Test Kit (J-35616-C) Terminal Repair Kit (J-38125-D), Instruction Manual (J-38125-4) and Flat-Wire Probe Adapter (J-42675).

Most intermittent conditions are caused by faulty electrical connections or wiring. Inspect for the following items

1. Wiring broken inside the insulation.
2. Poor connection between the male and female terminal at a connector.
3. Poor terminal to wire connection. Some conditions which fall under this description are poor crimps, poor solder joints, crimping over the wire insulation rather than the wire itself and corrosion in the wire to terminal contact area, etc.
4. Wire insulation which is rubbed through. This causes an intermittent short as the bare area touches other wiring or parts of the vehicle.

Testing for Proper Terminal Contact

It is important to test terminal contact at the component and any in-line connectors before replacing a suspect component. Mating terminals must be inspected to ensure good terminal contact. A poor connection between the male and female terminal at a connector may be the result of contamination or deformation.

Contamination may be caused by the connector halves being improperly connected. A missing or damaged connector seal, damage to the connector itself, or exposing the terminals to moisture and dirt can also cause contamination. Contamination, usually in the underhood or underbody connectors, leads to terminal corrosion, causing an open circuit or intermittently open circuit.

Deformation is caused by probing the mating side of a connector terminal without the proper adapter. Always use the GM-approved terminal test kit when probing connectors. Other causes of terminal deformation are improperly joining the connector halves, or repeatedly separating and joining the connector halves. Deformation, usually to the female terminal contact tang, can result in poor terminal contact causing an open or intermittently open circuit.

Round Wire Connectors

Follow the procedure to test terminal contact of Metri-Pack or 56 series terminals. Refer to the terminal repair kit or the instruction manual for terminal identification. Follow the procedure in order to test terminal contact.

1. Separate the connector halves.
2. Visually inspect the connector halves for contamination. Contamination may result in a White or Green build-up within the connector body or between terminals. This causes high terminal resistance, intermittent contact, or an open circuit. An underhood or underbody connector that shows signs of contamination should be replaced in its entirety: terminals, seals, and connector body.
3. Using an equivalent male terminal from the terminal repair kit, test that the retention force is significantly different between a good terminal and a suspect terminal. Replace the female terminal in question.

Flat Wire (Dock & Lock) Connectors

There are no serviceable parts for flat wire (dock and lock) connectors on the harness side or the component side. Follow the procedure below in order to test terminal contact.

1. Remove the component in question.
2. Visually inspect each side of the connector for signs of contamination. Avoid touching either side of the connector as oil from your skin may be a source of contamination as well.
3. Visually inspect the terminal bearing surfaces of the flat wire circuits for splits, cracks, or other imperfections that could cause poor terminal contact. Visually inspect the component side connector to ensure that all of the terminals are uniform and free of damage or deformation.
4. Insert the appropriate adapter from the flat-wire probe adapter on the flat wire harness connector in order to test the circuit in question.

STARTER SOLENOID DOES NOT CLICK

Refer to illustrations for STARTER SOLENOID DOES NOT CLICK symptom test. (Scheme 1)- (Scheme 4).

Scheme 1

Scheme 2

Scheme 3

Scheme 4

STARTER SOLENOID CLICKS, ENGINE DOES NOT CRANK

Refer to illustration for STARTER SOLENOID CLICKS, ENGINE DOES NOT CRANK symptom test. (Scheme 5)

Scheme 5

ENGINE CRANKS SLOWLY

Perform the following checks

1. Battery - See «BATTERY TESTING & INSPECTION (NON-HP2)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__battery-testing-inspection-non-hp2) .
2. Wiring - Inspect the wiring for damage. Inspect all connections to the starter motor, solenoid, battery, and all ground connections. See «INTERMITTENT OR POOR CONNECTIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__intermittent-or-poor-connections) .
3. Engine - Make sure the engine is not seized. See «GASOLINE ENGINE - MECHANICAL TROUBLE SHOOTING»(/cadillac/escalade/gmt800-2001-2006/remont/basic-trouble-shooting/#basic-trouble-shooting-general-information__gasoline-engine-mechanical-trouble-shooting) .

If the battery, the wiring and the engine are functioning properly and the engine continues to crank slowly, replace the starter motor. See

STARTER MOTOR

STARTER MOTOR NOISE DIAGNOSIS

Diagnostic Aids

1. Inspect the flywheel ring gear for damage or unusual wear.
2. Shim the starter if applicable.
3. In order to add pinion to ring gear clearance a full size shim must be used. DO NOT shim only one starter mounting bolt. There are 3 shims available in different shapes (for clearance). All are 0.039" (1 mm) thick.

Refer to illustration for STARTER MOTOR NOISE DIAGNOSIS symptom test. (Scheme 6)

Scheme 6

REMOVAL & INSTALLATION

Note. Starter may have a single shim or double shims added to correct a noise or engagement condition. When installing starter, any previously installed shims should be replaced in original location to ensure proper pinion to flywheel clearance.

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.

STARTER MOTOR

Refer to appropriate link below for removal and installation of starter motor.

1. «Pickup (4.3L Engine)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__removal-pickup-w43l-engine)
2. «Pickup (4.8L, 5.3L & 6.0L Engines)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__removal-pickup-w48l-53l-60l)
3. «Pickup (6.6L Diesel Engine)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__removal-pickup-w66l-engine)
4. «Pickup (8.1L Engine)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__removal-pickup-w81l-engine)
5. «Sport Utility (4.8L, 5.3L, 6.0L & 8.1L Engines)»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__removal-sport-utility-w48l-53l-60l)

Removal (Pickup w/4.3L Engine)

1. Disconnect the negative battery cable.
2. Raise and suitably support the vehicle.
3. Remove the starter motor bolts.
4. Remove the starter lead nut.
5. Remove the positive cable from the starter.
6. Remove the starter solenoid nut.
7. Remove the harness from the starter.
8. Remove the starter from the vehicle.

Installation (Pickup w/4.3L Engine)

1. Install the starter to the vehicle.
2. Install the harness to the starter.
3. Install and tighten the starter solenoid nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
4. Install the positive cable to the starter.
5. Install and tighten the starter lead nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
6. Install and tighten the starter motor bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
7. Lower the vehicle.
8. Connect the negative battery cable. Tighten negative battery cable bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .

Removal (Pickup w/4.8L, 5.3L & 6.0L Engines)

1. Disconnect the negative battery cable.
2. Raise and suitably support the vehicle.
3. Remove the right transmission cover bolt. (Scheme 7)
4. Remove the starter bolts.
5. Disconnect the oil level sensor electrical connector.
6. Slide the starter forward until the starter clears the transmission.
7. Remove the starter lead nut. (Scheme 8) Remove the starter lead from the solenoid stud.
8. Remove the starter lead nut.
9. Remove the positive cable from the starter stud.
10. Place the starter on a workbench.
11. Unsnap the transmission cover from the starter.
12. If necessary, remove the starter shield.

Scheme 7

Scheme 8

Installation (Pickup w/4.8L, 5.3L & 6.0L Engines)

1. If necessary, install the starter shield.
2. Snap the transmission cover to the starter.
3. Install the positive cable to the starter stud.
4. Install and tighten the starter lead nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
5. Install the starter solenoid lead to the solenoid stud. (Scheme 8) Install and tighten the starter solenoid nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
6. Snap the transmission cover onto the starter.
7. Slide the starter rearward.
8. Install and tighten the starter bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
9. Connect the oil level sensor electrical connector.
10. Install and tighten the right transmission cover bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
11. Lower the vehicle.
12. Connect the negative battery cable. Tighten negative battery cable bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).

Removal (Pickup w/6.6L Engine)

1. Disconnect the negative battery cable.
2. Raise and suitably support the vehicle.
3. If equipped with 4-wheel drive (4WD), remove the right front tire and wheel.
4. If equipped with 4WD, remove the right fender wheelhouse inner panel.
5. Remove the battery positive cable from the starter motor.
6. Remove the solenoid wires.
7. Remove the starter motor bolts.
8. Remove the starter motor.

Installation (Pickup w/6.6L Engine)

1. Install the starter motor to the engine rear cover.
2. Install and tighten the starter motor bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
3. Install the solenoid wires.
4. Install and tighten the starter solenoid nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
5. Install the battery positive cable to the solenoid stud.
6. Install and tighten the starter lead nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
7. If equipped with 4WD, install the right fender wheelhouse inner panel.
8. If equipped with 4WD, install the right front tire and wheel. Tighten wheel lug nuts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
9. Lower the vehicle.
10. Connect the negative battery cable. Tighten negative battery cable bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .

Removal (Pickup w/8.1L Engine)

1. Disconnect the negative battery cable.
2. Raise and suitably support the vehicle.
3. Remove the positive cable nut.
4. Remove the positive cable from the starter solenoid.
5. Remove the engine harness ground nut and ground from the starter solenoid.
6. Remove the starter motor bolts.
7. Remove the starter motor.
8. Remove the starter heat shield bolts, nut, and shield, if necessary.

Installation (Pickup w/8.1L Engine)

1. Install the starter heat shield, nut and bolts, if necessary. Tighten the nuts and bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
2. Install the starter motor.
3. Install and tighten the starter motor bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
4. Install the engine harness ground to the starter solenoid.
5. Install and tighten the starter solenoid nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
6. Install the positive cable to the starter solenoid.
7. Install and tighten the starter lead nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .
8. Lower the vehicle.
9. Connect the negative battery cable. Tighten negative battery cable bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications) .

Removal (Sport Utility w/4.8L, 5.3L, 6.0L & 8.1L Engines)

1. Disconnect the battery negative cable.
2. Raise and suitably support the vehicle.
3. On 4.8L, 5.3L and 6.0L engines, remove the transmission cover bolt. (Scheme 7)
4. On all engine types, if equipped with four wheel drive (4WD), remove the front axle mounting bracket nuts. (Scheme 9) NOTE: DO NOT remove the bolt.
5. If equipped with 4WD, reposition the front axle mounting bracket bolt until the bolt tip is flush with the support bushing.
6. Remove the starter bolts.
7. On 4.8L, 5.3L and 6.0L engines, disconnect the oil level sensor electrical connector.
8. On all engine types, slide the starter forward until the starter clears the transmission.
9. Remove the starter lead nut. (Scheme 8) Remove the starter lead from the starter.
10. Remove the positive battery cable nut from the starter.
11. Remove the positive cable from the starter.
12. Place the starter on a workbench.
13. If necessary, unsnap the transmission cover from the starter.
14. If necessary, remove the starter heat shield.

Scheme 9

Installation (Sport Utility w/4.8L, 5.3L, 6.0L & 8.1L Engines)

1. If necessary, install the starter heat shield.
2. If necessary, snap the transmission cover to the starter.
3. Install the positive cable to the starter.
4. Install and tighten the positive battery cable nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
5. Install the starter lead to the starter. (Scheme 8)
6. Install and tighten the starter lead nut to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
7. Position the starter into place.
8. Install and tighten the starter bolts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
9. On 4.8L, 5.3L and 6.0L engines, connect the oil level sensor electrical connector.
10. If equipped with 4WD, position the front axle mounting bracket bolt until the bolt is fully seated. (Scheme 9)
11. If equipped with 4WD, install the front axle mounting bracket nuts. Tighten the nuts to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
12. On 4.8L, 5.3L and 6.0L engines, install the transmission cover bolt. (Scheme 7) Tighten the bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).
13. Lower the vehicle.
14. Connect the negative battery cable. Tighten negative battery cable bolt to specification. See «TORQUE SPECIFICATIONS»(/cadillac/escalade/gmt800-2001-2006/remont/starter/#starting-system__torque-specifications).

OVERHAUL

Note. Starter assemblies identified as "PG" series are not serviceable, and should be replaced as complete units.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

AVALANCHE

For starter wiring, see STARTING/CHARGING .

CAB & CHASSIS (SIERRA & SILVERADO)

No wiring diagrams are currently available from manufacturer specifically for Cab & Chassis models. See SIERRA and SILVERADO .

ESCALADE

For starter wiring, see STARTING/CHARGING .

ESCALADE ESV

For starter wiring, see STARTING/CHARGING .

ESCALADE EXT

For starter wiring, see STARTING/CHARGING .

1500

For starter wiring, see STARTING/CHARGING .

1500HD

For starter wiring, see STARTING/CHARGING .

2500

For starter wiring, see STARTING/CHARGING .

2500HD

For starter wiring, see STARTING/CHARGING .

3500

For starter wiring, see STARTING/CHARGING .

For starter wiring, see STARTING/CHARGING .

For starter wiring, see STARTING/CHARGING .

For starter wiring, see STARTING/CHARGING .

For starter wiring, see STARTING/CHARGING .

For starter wiring, see STARTING/CHARGING .

SUBURBAN

For starter wiring, see STARTING/CHARGING .

TAHOE

For starter wiring, see STARTING/CHARGING .

YUKON

For starter wiring, see STARTING/CHARGING .

YUKON XL

For starter wiring, see STARTING/CHARGING .

See also:
• AIR BAG SAFETY PRECAUTIONS
• DISABLING & ACTIVATING AIR BAG SYSTEM
• COMPUTER RELEARN PROCEDURES
• GENERATORS & REGULATORS
• SCAN TOOL DOES NOT POWER UP
• POWER MODE MISMATCH
• GASOLINE ENGINE - MECHANICAL TROUBLE SHOOTING
• SELF-DIAGNOSTIC SYSTEM
• ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK
• BATTERY TESTING & INSPECTION (NON-HP2)
• ENGINE ELECTRICAL SYMPTOMS
• BATTERY SPECIFICATIONS
• TORQUE SPECIFICATIONS
• DESCRIPTION & OPERATION
• CHECKING AFTERMARKET ACCESSORIES
• INTERMITTENT OR POOR CONNECTIONS
• STARTER SOLENOID DOES NOT CLICK
• STARTER SOLENOID CLICKS, ENGINE DOES NOT CRANK
• ENGINE CRANKS SLOWLY
• STARTER MOTOR NOISE DIAGNOSIS
• STARTER MOTOR
• Pickup (4.3L Engine)
• Pickup (4.8L, 5.3L & 6.0L Engines)
• Pickup (6.6L Diesel Engine)
• Pickup (8.1L Engine)
• Sport Utility (4.8L, 5.3L, 6.0L & 8.1L Engines)