Steering Wheel & Steering Column Buick LaCrosse I

Fastener Tightening Specifications

Fastener Tightening Specifications

Steering Wheel and Column Schematic Icons

Steering Wheel and Column Schematic Icons Icon Icon Definition CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR DISABLING AND ENABLING ZONES . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs

Scheme 1

Scheme 2

Scheme 3

Scheme 4

Scheme 5

Scheme 6

Steering Wheel and Column Connector End Views

Ignition Lock Control Actuator (D55) Connector Part Information OEM: 12047663 Service: See Catalog 2-Way M Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A PU/WH 1630 Steering Column Key Cylinder Lock Solenoid Control B BK/WH 1551 Ground

Diagnostic Starting Point - Steering Wheel Controls

Begin the system diagnosis with Diagnostic System Check - Vehicle . The Diagnostic System Check - Vehicle will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules 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 - Vehicle will identify the correct procedure for diagnosing the system and where the procedure is located.

Diagnostic Fault Information

Circuit/System Description

The radio supplies 10 volts to the audio steering wheel control momentary contact switches and monitors the return signal. Each switch is associated to a set resistance value, when pressed a specific voltage drop occurs through a series of resistors unique to that switch. The radio then identifies the selection to activate the feature, otherwise sends a serial data message that is received by the controlled component activating the feature. The temperature up/down switch is part of this circuit, if equipped.

Diagnostic Aids

1. This diagnostic is for the audio steering wheel controls.
2. Before diagnosis of the steering wheel controls, ensure the primary controls of the associated component are functioning properly.
3. Review with the schematic when testing switch resistance values.
4. If a single switch function is inoperative, test the suspect switch. Refer to «Component Testing»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__component-testing) .
5. A poor connection at the right switch could cause both banks of switches to be inoperative or malfunction.

Connector End View Reference

1. «Entertainment Connector End Views»(/buick/lacrosse/i-2004-2009/remont/entertainment-systems/#entertainment-systems__entertainment-connector-end-views)
2. «Steering Wheel and Column Connector End Views»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-wheel-and-column-connector-end)

Electrical Information Reference

1. «Steering Wheel Schematics»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column)
2. «Circuit Testing»(/buick/lacrosse/i-2004-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__circuit-testing)
3. «Connector Repairs»(/buick/lacrosse/i-2004-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__connector-repairs)
4. «Testing for Intermittent Conditions and Poor Connections»(/buick/lacrosse/i-2004-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing)
5. «Wiring Repairs»(/buick/lacrosse/i-2004-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__wiring-repairs)

Circuit/System Testing

Note: It is Recommend that Component Testing is performed before Circuit Testing when diagnosing steering wheel controls.

1. With the ignition OFF, disconnect the harness connector at the left and right steering wheel control switches.
2. With the ignition ON, radio ON, test for 9.6-10.2 volts between the remote radio control supply voltage circuit and ground at the right switch harness connector. If less than 9.6 volts test the voltage supply circuit for a short to ground or an open/high resistance. If the circuit test is normal, replace the radio. If greater than 10.2 volts, test the voltage supply circuit for short to voltage. If the circuit test is normal, replace the radio.
3. Connect a test lamp between the steering wheel controls signal circuit and ground at the right switch harness connector. Verify test lamp does not illuminate. If test lamp illuminates, test the signal circuit for a short to voltage. If the circuit test is normal, replace the radio.
4. Ignition OFF, test the jumper wire circuit for less than 1.0 ohm of resistance between the left and right switch harness connectors. If greater than 1.0 ohm, repair jumper wire for an open/high resistance.
5. Disconnect the harness connector at the radio.
6. Test for infinite resistance between the signal circuit and ground, at the radio harness connector. If less than infinite resistance, test the signal circuit for a short to ground. If the circuit test is normal, test or replace the switch.
7. Test the steering wheel controls signal circuit for less than 1.0 ohm of resistance between the radio and switches. If greater than 1.0 ohm, test the signal circuit for an open/high resistance. If the circuits test normal, refer to «Component Testing»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__component-testing) .
8. If the circuit test is normal, test or replace switch.

Component Testing

1. Ignition OFF, disconnect the harness connector at the suspect switch.
2. Test for infinite resistance between the remote radio control supply voltage terminal and the steering wheel controls signal terminal with the switch in the open position. If less than infinite resistance, replace the switch.
3. Test resistance values between the supply voltage terminal and the signal terminal with the switch closed in each position and verify readings are approximate to what the schematic reads. If values do not, replace the switch.

Repair Instructions

1. «Steering Wheel Control Switch Assembly Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column)
2. «Control Module References»(/buick/lacrosse/i-2004-2009/remont/communication-devices/#computerintegrating-systems__control-module-references) for radio replacement, setup and programming

Symptoms - Steering Wheel and Column

Review the system description and operation in order to familiarize yourself with the system functions. Refer to Steering Wheel and Column Description and Operation .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the steering wheel and column.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptoms List

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

1. «Lock System Does Not Unlock»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__lock-system-does-not-unlock)
2. «Lock System Does Not Lock»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__lock-system-does-not-lock)
3. «Lock System Sticks in Start»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__lock-system-sticks-in-start)
4. «Ignition Key Cannot Be Removed from the Ignition Lock Cylinder»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__ignition-key-cannot-be-removed-from)
5. «Ignition Key Cannot Turn or Sticks in Any Position»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__ignition-key-cannot-turn-or-sticks)
6. «Noise in Steering Column»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__noise-in-steering-column)
7. «Looseness in Steering Column»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__looseness-in-steering-column)
8. «Steering Column Tilt Function Inoperative»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-column-tilt-function-inoperative)
9. «Ignition Can/Cannot Be Turned Off with Transmission in Any Gear (D55)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column)

Symptoms - Steering Wheel Controls

1. Inspect for aftermarket devices which may affect the operation of the Steering Wheel Controls System. Refer to «Checking Aftermarket Accessories»(/buick/lacrosse/i-2004-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__checking-aftermarket-accessories) .
2. Inspect for easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to Steering Wheel Controls Inoperative in order to diagnose the symptom.

Lock System Does Not Unlock

Lock System Does Not Unlock

Steering Column Tilt Function Inoperative

Steering Column Tilt Function Inoperative

Circuit Description

If the vehicle is equipped with a floor mounted console gearshift, an ignition lock cylinder control actuator system is used in the steering column. The purpose of the system is to prevent the ignition lock cylinder from being turned to the lock position while the transmission is in gear. This would also prevent the steering wheel from being locked. The system consists of an ignition lock cylinder actuator and a park position switch. The actuator contains a pin that is spring loaded out, to prevent the ignition lock cylinder from being turned to the lock position when the gearshift is not in PARK. The park position switch is located in the floor mounted gearshift assembly, as part of the automatic transmission shift lock control switch. The switch is closed with the gearshift in PARK and open in all other positions

System Operation

When the gearshift is in the PARK position, the park position switch is closed. This applies voltage to the ignition lock cylinder actuator and the pin retracts, allowing the ignition lock cylinder to be turned to the LOCK position. When the gearshift is not in PARK, the park position switch is open. No voltage is applied to the ignition lock cylinder actuator and the spring loaded pin remains in the out position, preventing the ignition lock cylinder from being turned to LOCK. If vehicle power is lost while the ignition lock cylinder is not in the LOCK position, the system will prevent the operator from turning the ignition key to the lock position or removing the key. If the vehicle has lost power, pushing the ignition lock cylinder release button on the underside of the ignition lock cylinder will override the system and allow the key to be removed.

Ignition Can/Cannot Be Turned Off with Transmission in Any Gear (D55)

Lock System Does Not Lock

Lock System Does Not Lock

Lock System Sticks in Start

Lock System Sticks in Start

Ignition Key Cannot Be Removed from the Ignition Lock Cylinder

Ignition Key Cannot Be Removed from the Ignition Lock Cylinder

Ignition Key Cannot Turn or Sticks in Any Position

Ignition Key Cannot Turn or Sticks in Any Position

Noise in Steering Column

Noise in Steering Column

Looseness in Steering Column

Looseness in Steering Column

Removal Procedure

1. Turn the ignition OFF and remove the key from the ignition lock cylinder in order to lock the steering column.
2. Pull the intermediate shaft seal from the steering column.
3. Remove the Intermediate shaft pinch bolt from the intermediate shaft.
4. Disconnect the intermediate shaft from the steering column. Note the alignment for assembly.
5. Carefully lower the intermediate shaft.
6. Collapse the intermediate shaft in order to gain clearance.
7. Cut back the insulation around the inner intermediate shaft seal in order to access the seal bolts.
8. Remove the intermediate shaft seal bolts.
9. Remove the intermediate shaft seal from the inside of vehicle.

Installation Procedure

1. Install the intermediate shaft seal over the intermediate shaft from inside the vehicle.
2. Connect the intermediate shaft to the steering column as noted during removal.
3. Install the upper intermediate shaft pinch bolt. Tighten: Tighten the bolt to 48 N.m (35 lb ft).
4. Install the intermediate shaft seal bolts. Tighten: Tighten the intermediate shaft seal bolts to 3 N.m (27 lb in).
5. Connect the intermediate shaft seal to the steering column.
6. Connect the lower intermediate shaft seal to the steering gear.

Tools Required

J 42640 Steering Column Lock Pin

1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/buick/lacrosse/i-2004-2009/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) in General Information.
2. Position the seal in order to provide access to the lower pinch bolt on the intermediate steering shaft.
3. Remove the lower pinch bolt from the power steering gear stub shaft.
4. Insert J 42640 into the steering column access hole in order to lock the steering column. This will maintain the orientation.
5. Disconnect the intermediate steering shaft from the power steering gear stub shaft. Note the shaft to gear alignment for installation.
6. Lower the vehicle.
7. Reposition the seal in order to gain access to the upper pinch bolt of the intermediate steering shaft.
8. Remove the upper pinch bolt from the intermediate steering shaft.
9. Disconnect the intermediate steering shaft from the steering column. Note the shaft to column alignment for installation.
10. Remove the intermediate steering shaft from the vehicle.

1. Position the intermediate steering shaft into the seal.
2. Connect the intermediate shaft to the steering column as noted during removal.
3. Install the upper intermediate steering shaft pinch bolt. Tighten: Tighten the pinch bolt to 48 N.m (35 lb ft).
4. Connect the intermediate steering shaft seal onto the steering column.
5. Raise the vehicle.
6. Connect the intermediate steering shaft to the power steering gear stub shaft as noted during removal.
7. Install the lower intermediate steering shaft pinch bolt. Tighten: Tighten the pinch bolt to 48 N.m (35 lb ft).
8. Connect the intermediate steering shaft seal onto the power steering gear. Rotate the lower seal as necessary to gain maximum clearance.
9. Lower the vehicle.

Steering Column Accident Damage Inspection

1. Inspect the capsules on the steering column bracket assembly. All capsules must be securely seated in the bracket slots and inspected for any loose conditions when pushed or pulled by hand.
2. Observe how the bracket is attached to the jacket assembly. If the capsules are not securely seated and the bracket is bolted to the jacket assembly, replace only the bracket. If the capsules are not securely seated and the bracket is welded to the jacket assembly, replace only the jacket assembly.
3. Inspect for jacket assembly collapse by measuring the distance from the lower edge of the upper jacket to a defined point on the lower jacket. Replace the jacket assembly if the measured dimensions are not within specifications.
4. Visually inspect the steering shaft for sheared injected plastic (1). If the steering shaft shows sheared plastic (1), replace the steering shaft.
5. Any frame damage that could cause a bent steering shaft must have the steering shaft runout checked. Using a dial indicator at the lower end of the steering shaft, rotate the steering wheel. The runout must not exceed 1.60 mm (0.06 in).

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
3. Remove the steering wheel. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Remove the knee bolster. Refer to «Knee Bolster Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
5. Remove the gap hider. Refer to «Instrument Panel Cluster (IPC) Replacement»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
6. Remove the tilt lever (1).
7. Remove the retaining screws (3) from the lower steering column trim cover.
8. Disconnect the closeout shroud from the lower steering column trim cover.
9. Remove the retaining screw (2) from the upper steering column trim cover (1).
10. Lift the upper trim cover to gain access to the lock cylinder access hole.
11. Using a bent tip awl, insert the tip into the access hole in the ignition lock cylinder.
12. Turn the ignition lock cylinder to the START position.
13. Using the bent tip awl push down on the retaining pin of the ignition lock cylinder.
14. Release the ignition lock cylinder to the RUN position and remove the lock cylinder.
15. Remove the upper trim cover.
16. Remove the closeout shroud from the upper trim cover.

1. Install the upper steering column trim cover (1) to the closeout shroud.
2. Install the upper trim cover (1) to the steering column.
3. Install the retaining screw (2) to the upper steering column trim cover. Tighten: Tighten the screw to 1.5 N.m (13 lb in).
4. Install the Ignition lock cylinder.
5. Install the lower trim cover (2) and ensure that the tabs engage with the tabs on the upper trim cover (1). Snap the tabs together.
6. Connect the lower steering column trim cover to the closeout shroud.
7. Install the retaining screws (3) to the lower steering column trim cover. Tighten: Tighten the screws to 3 N.m (27 lb in).
8. Install the tilt lever (1).
9. Install the gap hider. Refer to «Instrument Panel Cluster (IPC) Replacement»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
10. Install the knee bolster. Refer to «Knee Bolster Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
11. Install the steering wheel. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
12. Connect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
13. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the ignition lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Disconnect the theft deterrent control module connector.
5. Disconnect the fused jumper assembly connector.
6. Slide the theft deterrent control module (2) from the ignition lock cylinder case (1).
7. Remove the key alarm connector (1) from the ignition lock cylinder case (4).
8. Remove the 2 tapping screws (3) from the ignition switch assembly (2).

1. Install the ignition switch assembly (2) and secure by using 2 tapping screws (3). Tighten: Tighten the screws to 7 N.m (62 lb in).
2. Install the ignition switch assembly connector (1) onto the ignition lock cylinder case (4).
3. Connect the theft deterrent control module connector.
4. Connect the fused jumper assembly connector.
5. Install the theft deterrent control module (2) onto the ignition lock cylinder case (1).
6. Install the ignition lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
7. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
8. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
2. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
3. Turn the ignition lock cylinder to the start position.
4. Remove the steering column trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) . Gently lift the upper trim cover so you may Insert the tip of an awl into the access hole (1) of the ignition lock cylinder case.
5. Push down and hold the retaining pin of the ignition lock cylinder.
6. Release the ignition lock cylinder to the run position.
7. Remove the ignition lock cylinder by pulling the cylinder away from the steering column.

1. Install the steering column trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
2. Install the ignition lock cylinder by performing the following procedure: Align the positioning locking tab slot on the ignition lock cylinder case to the positioning tab on the ignition lock cylinder. Push the lock cylinder in until the tab locks in the ignition lock cylinder case.
3. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
4. Connect the battery negative cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
5. Perform the Passlock learn procedure. Refer to «Programming Theft Deterrent System Components»(/buick/lacrosse/i-2004-2009/remont/door-locks-anti-theft-systems/#theft-deterrent-system) in Theft Deterrent.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the ignition lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the ignition switch. Refer to «Ignition Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Remove the steering column tilt head components. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
5. Remove the turn signal switch housing. Refer to «Turn Signal Switch Housing Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Remove the turn signal and multifunction switch assembly only. Refer to «Multifunction, Turn Signal Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
7. Remove the park lock cable assembly (1) from the ignition lock cylinder case in the following way: Use a small blade to push against the locking tab on the end of the park lock cable assembly (1). Disconnect the park lock cable assembly (1) from the ignition lock cylinder case.
8. Remove the 3 TORX® screws (2) from the ignition lock cylinder case (1).
9. Remove the ignition lock cylinder case (1) from the steering column tilt head assembly.

1. Align the ignition lock cylinder case (1) with the steering column tilt head assembly.
2. Screw the 3 TORX® screws (2) into the ignition lock cylinder case (1). Tighten: Tighten the 3 TORX® screws to 7 N.m (62 lb in).
3. Press the locking tab on the end of the park lock cable assembly (1) into the slot in the ignition lock cylinder case.
4. Install the turn signal switch housing. Refer to «Turn Signal Switch Housing Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column)
5. Install the turn signal and multifunction switch assembly only. Refer to «Multifunction, Turn Signal Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Install the steering column tilt head components. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
7. Install the ignition switch only. Refer to «Ignition Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
8. Install the ignition lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
9. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. J 23653-SIR Steering Column Lock Plate Compressor
2. J 42137 Steering Column Lock Plate Compressor Adapter. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the SIR coil. Refer to «Inflatable Restraint Steering Wheel Module Coil Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
3. Remove the bearing retainer using J 23653-SIR and J 42137 and dispose of it. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
4. Remove J 23653-SIR and J 42137 from the steering shaft assembly. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
5. Remove the shaft lock shield assembly (1).
6. Remove the turn signal cancel cam assembly (2).
7. Remove the upper bearing spring (3).
8. Remove the upper bearing inner race seat (4).
9. Remove the inner race (5).

1. Install the inner race (4).
2. Install the upper bearing inner race seat (3).
3. Install the upper bearing spring (2).
4. Lubricate the turn signal cancel cam assembly (1) with GM P/N 12377900 (Canadian P/N 10953529).
5. Install the turn signal cancel cam assembly (1).
6. Install the shaft lock shield assembly.
7. Install the new bearing retainer using J 23653-SIR and J 42137 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
8. Remove J 23653-SIR and J 42137 from the steering shaft assembly. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
9. Install the SIR coil. Refer to «Inflatable Restraint Steering Wheel Module Coil Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
10. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the wire harness assembly (1) from the wire harness strap (2).
4. Disconnect the turn signal and multifunction switch assembly connector from the SIR system coil connector.
5. Slide the 2 connectors (2) of the turn signal and multifunction switch assembly out of the bulkhead connector (1).
6. Remove the 2 pan head tapping screws (1) and (3) from the turn signal and multifunction switch assembly (2).
7. Remove the turn signal and multifunction switch assembly (2) from the steering column tilt head assembly.

1. Install the turn signal and multifunction switch assembly (2) onto the steering column tilt head assembly.
2. Screw the 2 pan head tapping screws (1) and (3) into the turn signal and multifunction assembly (2). Tighten Tighten the top pan head tapping screw (1) to 3 N.m (27 lb in). Tighten the side pan head tapping screw (3) to 7 N.m (62 lb in).
3. Slide the 2 connectors (2) of the turn signal and multifunction switch assembly into the bulkhead connector (1).
4. Connect the turn signal and multifunction switch assembly connector to the SIR coil connector.
5. Install the wire harness assembly (1) into the wire harness strap (2).
6. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
7. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the tilt head components. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the turn signal and multifunction switch assembly only. Refer to «Multifunction, Turn Signal Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Slide the turn signal switch housing off of the steering column shaft assembly.

1. Slide the turn signal switch housing onto the steering column shaft assembly.
2. Install the turn signal and multifunction switch assembly only. Refer to «Multifunction, Turn Signal Switch Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Install the tilt head components. Refer to «Turn Signal Cancel Cam and Steering Shaft Upper Bearing Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Slide the shift lever seal (2) up the shift lever (4).
3. If necessary, remove the steering column trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Disconnect the shift lever connector at the base of the column.
5. Remove the shift lever screw (3) from the shift lever assembly (4).
6. Remove the shift lever and seal from the linear shift assembly.
7. Remove the shift lever seal (2) from the shift lever (4).

1. Install the shift lever seal (2) onto the shift lever assembly (4).
2. Install the shift lever assembly (4) to linear shift assembly.
3. Install the shift lever screw (3) into the shift lever assembly (4). Tighten: Tighten the screw to 20 N.m (15 lb ft).
4. Slide the shift lever seal (2) down the shift lever assembly (4).
5. Align the shift lever seal into the steering column trim covers.
6. If necessary, install the steering column trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
7. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the shift lever assembly. Refer to «Shift Lever Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. With a screwdriver carefully pry the automatic transmission shift lock control away from the steering column jacket.
5. The lock cylinder should be in the OFF-LOCK position.
6. Insert a small screwdriver into the slot on the ignition lock cylinder case and push against the locking tab to remove the park lock cable assembly (1).
7. Remove the 3 flat-head 6-lobed socket tap screws from the linear shift assembly.
8. Remove the linear shift assembly.

1. Install the linear shift assembly and secure by using 3 flat-head 6-lobed socket tap screws. The linear shift assembly must be out of the PARK position to install the lower socket tap screw. Tighten: Tighten the screws to 10 N.m (89 lb in).
2. Connect the park lock cable assembly (1) into the ignition lock cylinder case. The lock cylinder should be in the OFF-LOCK position. The locking tab at the end of the park lock cable assembly (1) must be installed into the ignition lock cylinder case.
3. Install the automatic transmission shift lock control.
4. Install the gear shift lever and put the column in the NEUTRAL position.
5. Adjust the automatic transmission shift lock control. Pull the tab (1) out on the block side (2) of the automatic transmission shift lock control. Press on the adjuster block (2) to compress the internal adjuster spring to disengage the adjuster teeth. Slide the adjuster block as far away from the solenoid as possible. Lock in place by pushing the tab (1) back in.
6. Inspect the automatic transmission shift lock control. The automatic transmission shift lock control must lock the gear shift lever when it is put into the PARK position. When the column is installed in the vehicle you will not be able to shift the gear shift lever out of the PARK position without pressing on the brake pedal. The solenoid will be energized. Readjust if needed.
7. Install the shift lever assembly. Refer to «Shift Lever Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
8. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
9. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Pull the tilt lever out from the steering column.

1. Push the tilt lever into the steering column.
2. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

Scheme 7

Steering Wheel Control Switch Assembly Replacement

1. J 1859-A Steering Wheel Puller. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
2. J 42578 Steering Wheel Puller Legs. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Turn OFF the ignition.
3. Remove the Inflatable restraint steering wheel module. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
4. Scribe an alignment mark on the steering wheel hub. Align the mark with the slash mark on the steering shaft.
5. Loosen the steering wheel nut.
6. Position the steering wheel nut flush with the end of the steering shaft.
7. Assemble J 1859-A with J 42578 on the steering wheel. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
8. Use J 1859-A with J 42578 in order to unseat the steering wheel from the steering shaft. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
9. Remove J 1859-A and. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) . J 42578 from the steering wheel. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
10. Remove the steering shaft nut.
11. Remove the steering wheel from the steering shaft.
12. Remove the SIR connector from the steering wheel.

1. Route the SIR connector through the steering wheel.
2. Align the scribe mark on the steering wheel with the slash mark on the steering shaft.
3. Install the steering wheel.
4. Install the steering shaft nut. Tighten: Tighten the nut to 41 N.m (30 lb ft).
5. Install the Inflatable restraint steering wheel module. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
6. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
7. Inspect the operation of the following components: The horn The steering wheel The steering wheel controls

1. Disable the inflatable restraint steering wheel module. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Disconnect the connector from the theft deterrent control module.
5. If necessary, disconnect the connector from the ignition lock cylinder case (1).
6. Remove the theft deterrent control module (2) from ignition lock cylinder case assembly (1).

1. Install the theft deterrent control module (2)onto the ignition lock cylinder case assembly (1).
2. Connect the connector to the theft deterrent control module.
3. If necessary, connect the connector to the ignition lock cylinder case.
4. Install the lock cylinder. Refer to «Ignition Lock Cylinder Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
5. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Enable the inflatable restraint steering wheel module. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Install the tilt lever onto the steering column tilt head assembly.
4. Use the tilt lever to tilt the column to the UP position.
5. Remove the tilt spring (1) from the steering column support assembly (2) and from the steering column tilt head assembly (3) by using the following procedure: Pry up the tilt spring (1) until a bulge occurs and most of the tilt spring tension is removed. Secure the tilt spring (1) with locking pliers. Continue prying up the tilt spring (1) until the tilt spring disengages from the post on the steering column support assembly (2) and from the steering column tilt head assembly (3).
6. Remove the spring guide (1) from the tilt spring (2).

1. Use the tilt lever to tilt the column to the UP position.
2. Install the spring guide into the tilt spring.
3. Install the tilt spring (1) onto the steering column support assembly (2) and onto the steering column tilt head assembly by using the following procedure: Install the tilt spring (1) onto the steering column tilt head assembly. Install the tilt spring (1) onto the post on the steering column support assembly (2).
4. Install the upper and lower trim covers. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
5. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. J 21854-01 Pivot Pin Remover. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
2. J 23653-SIR Steering Column Lock Plate Compressor
3. J 42137 Cam Orientation Plate Adapter. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the SIR coil. Refer to «Inflatable Restraint Steering Wheel Module Coil Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
3. Compress the cam orientation plate using J 23653-SIR and J 42137 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) . Remove the bearing retainer from the shaft.
4. Remove J 23653-SIR and J 42137 from the steering column. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
5. Remove and dispose the bearing retainer (3).
6. Remove the cam orientation plate (2).
7. Remove the turn signal cancel cam assembly (1).
8. Remove the upper bearing spring (3).
9. Remove the upper bearing inner race seat (2).
10. Remove the inner race (1).
11. Remove the pivot pins (1) using J 21854-01 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
12. Pull the tilt arm in order to disengage the steering wheel lock shoes from the dowel pins (2) in the steering column support assembly.
13. Remove the housing and bearing assembly (1).

1. Install the housing and bearing assembly (1).
2. Using the tilt lever position, lock the shoes to the dowel pins (2).
3. Rotate the tilt head assembly (1) in order to align the holes for the pivot pins.
4. Install the 2 pivot pins by performing the following steps: Lubricate the pivot pins (1) with, GM P/N 12346293 (Canadian P/N 992723). Press the pivot pins (1) until the pins are firmly seated. Stake the pivot pins at three new locations (1).
5. Install the inner race (1).
6. Install the upper bearing inner race seat (2).
7. Install the upper bearing spring (3).
8. Install the turn signal cancel cam assembly (1).
9. Install the cam orientation plate (2).
10. Install the bearing retainer (3).
11. Install the bearing retainer ring to the steering shaft. Compress the cam orientation plate using J 23653-SIR and J 42137 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
12. Remove J 23653-SIR and J 42137 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
13. Install the SIR coil. Refer to «Inflatable Restraint Steering Wheel Module Coil Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
14. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. J 41352 Modular Column Holding Fixture. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
2. J 42640 Steering Column Lock Pin

1. Insert J 42640 into the steering column access hole in order to lock the steering column. This will maintain the correct orientation.
2. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
3. Disconnect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
4. Remove the inflatable restraint steering wheel module. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
5. Remove the steering wheel. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Remove the left instrument panel insulator. Refer to «Closeout/Insulator Panel Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
7. Remove the trim panel below the steering column. Refer to «Steering Column Filler Replacement»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
8. Remove the knee bolster. Refer to «Knee Bolster Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
9. Remove the intermediate steering shaft from the steering column. Refer to «Intermediate Steering Shaft Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
10. Remove the mounting bolts from the lower steering column.
11. Remove the mounting bolts from the upper steering column.
12. Disconnect the steering column electrical connectors.
13. Loosen the bolt from the steering column electrical connector.
14. Separate the two halves of the steering column electrical connector.
15. Remove the steering column.
16. Install the steering column onto J 41352 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .

1. Remove the steering column from J 41352 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
2. Position the steering column.
3. Insert the lower end of the steering column shaft into the intermediate steering shaft coupling.
4. Connect the steering column electrical connectors.
5. Tighten the electrical connector bolt in order to draw the two halves of the electrical connectors together.
6. Loosely install the bolts to the upper and the lower steering column. Tighten: Tighten the right side lower bolt to 24 N.m (18 lb ft). Tighten the left side lower bolt to 24 N.m (18 lb ft). Tighten the left side upper bolt to 24 N.m (18 lb ft). Tighten the right side upper bolt to 24 N.m (18 lb ft).
7. Install the intermediate steering shaft to the steering column. Refer to «Intermediate Steering Shaft Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
8. Pull the intermediate steering shaft seal up over the lower column in order to lock the seal into place.
9. Install the knee bolster. Refer to «Knee Bolster Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
10. Install the trim panel below the steering column. Refer to «Steering Column Filler Replacement»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
11. Install the left instrument panel insulator. Refer to «Closeout/Insulator Panel Replacement - Left»(/buick/lacrosse/i-2004-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
12. Install the steering wheel. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
13. Install the inflatable restraint steering wheel module. Refer to «Inflatable Restraint Steering Wheel Module Replacement»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
14. Connect the negative battery cable. Refer to «Battery Negative Cable Disconnect/Connect Procedure (L26)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) or «Battery Negative Cable Disconnect/Connect Procedure (LY7)»(/buick/lacrosse/i-2004-2009/remont/charging-system/#battery-charging-system-and-starting-system) in Engine Electrical.
15. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
16. Inspect all of the column components for the correct operation.

1. Disable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the steering column from the vehicle. Refer to «Steering Column Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the following from the steering shaft: The boot seal (5) The steering shaft seal (4) The sensor retainer (3) The sensor locator (2)
4. Remove the steering wheel position sensor (1). Refer to «Steering Wheel Position Sensor Centering»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
5. Remove the adapter and bearing assembly from the steering jacket assembly.

1. Install the adapter and bearing assembly to the steering jacket assembly.
2. Install the following onto the steering shaft: The steering wheel position sensor (1) Refer to «Steering Wheel Position Sensor Centering»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) . The sensor locator (2) The sensor retainer (3) The steering shaft seal (4) The boot seal (5)
3. Install the steering column into the vehicle. Refer to «Steering Column Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

1. Verify the type of steering wheel position sensor.
2. From the technicians point of view, the FRONT of the sensor (1) connector will be on the right.
3. Remove the connector from the sensor.
4. Remove the sensor (1) from the adapter and bearing assembly.
5. To install the sensor, proceed to step 1 in the installation information.
6. From the technicians point of view, the FRONT of the sensor will have: A foam ring (2) A pin hole (1) for centering the pin. Note the location of the pin hole. A flush rotor flange cuff (4)
7. Make an alignment mark on the flush rotor flange cuff (3).
8. Remove the connector from the sensor.
9. Remove the sensor from the adapter and bearing assembly.
10. To install the sensor, proceed to step 5 in the installation procedure.
11. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff (3) for installation A pin hole (1) for the centering pin. Note the location of the pin hole.
12. Remove the connector from the sensor.
13. Remove the sensor from the adapter and bearing assembly.
14. To install the sensor, proceed to step 9 in the installation procedure.
15. From the technicians point of view, the FRONT of the sensor will have: A raised rotor flange cuff (3) An alignment mark (2) on the rotor flange cuff (3) for installation A pin hole (1) for the centering pin. Note location of the pin hole. A sensor clip in FRONT of the sensor
16. Remove the connector from the sensor.
17. Remove the sensor clip from the sensor.
18. Remove the sensor from the adapter and bearing assembly.
19. To install the sensor, proceed to step 13 in the installation procedure.
20. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (3) A pin hole (1) for the centering pin. Note the location of the pin hole. An alignment mark (2) on the flush rotor flange cuff (3) for installation
21. Remove the connector from the sensor.
22. Remove the sensor from the adapter and bearing assembly.
23. To install the sensor, proceed to step 17 in the installation procedure.
24. From the technicians point of view, the FRONT of the sensor will have: A flush rotor flange cuff (4) A pin hole (2) for the centering pin-Note the location of the pin hole. An alignment mark (3) on the flush rotor flange cuff (4) for installation A foam ring (1)
25. Remove the connector from the sensor.
26. Remove the sensor from the adapter and bearing assembly.
27. To install the sensor, proceed to step 21 in the installation procedure.

1. If installing a new sensor, it will come with a pin installed in the sensor. Do not remove the pin until the sensor is seated.
2. From the technicians point of view, the FRONT of the sensor (1) connector will be on your right. From the technicians point of view, the BACK of the sensor (2) connector will be on your left.
3. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
4. Install the connector to the sensor.
5. From the technicians point of view, the FRONT of the sensor will have: A foam ring (4) A pin hole (7) for the centering pin-Note the location of the pin hole. A flushed rotor flange cuff (6) An alignment mark (5) for installation
6. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) A foam ring (3) An alignment tab (2) for installing into the adapter and bearing assembly A view of the inside of the connector
7. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
8. Install the connector to the sensor.
9. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A raised rotor flange cuff (5) An alignment mark (4) for installation
10. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing into the adapter and bearing assembly
11. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
12. Install the connector to the sensor.
13. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin- Note the location of the pin hole. A raised rotor flange cuff (4) An alignment mark (3) for installation
14. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
15. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
16. Install the connector to the sensor.
17. From the technicians point of view, the FRONT of the sensor will have: A pin hole (2) for the centering pin-Note the location of the pin hole. A flush rotor flange cuff (4) An alignment mark (3) for installation
18. From the technicians point of view, the BACK of the sensor will have an alignment tab (1) for installation. This sensor does not have double D flats.
19. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
20. Install the connector to the sensor.
21. From the technicians point of view, the FRONT of the sensor will have: A pin hole (3) for the centering pin-Note location of the pin hole. A flush rotor flange cuff (5) An alignment mark (4) for installation A foam ring (6)
22. From the technicians point of view, the BACK of the sensor will have: Double D flats (1) An alignment tab (2) for installing into the adapter and bearing assembly
23. Looking at the FRONT of the sensor, align the sensor with the steering shaft and install into the adapter and bearing assembly.
24. Install the connector to the sensor.

1. J 21854-01 Pivot Pin Remover. See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
2. J 41688 Centering Sphere Installer Tool

1. Remove the ignition lock cylinder case. Refer to «Ignition Lock Cylinder Case Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
2. Remove the tilt spring assembly only. Refer to «Tilt Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the automatic transmission shift lock control.
4. Use a screwdriver to pry the automatic transmission shift lock control from the steering column jacket assembly.
5. Remove the 3 flat-head 6-lobed socket tapping screws from the linear shift assembly. Remove the linear shift assembly.
6. Remove the following items from the steering shaft assembly: The steering shaft seal (6) The sensor retainer (5) The lower spring retainer (4) The lower bearing spring (3) The lower bearing seat (2) The adapter and bearing assembly (1)
7. Dispose of the lower spring retainer (4).
8. Remove the 2 pivot pins from the steering column support assembly with J 21854-01 . See «Special Tools»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__special-tools) .
9. Install the tilt knob and tilt the column to the upright position.
10. Remove the upper tilt head assembly with the steering shaft assembly.
11. Remove the steering shaft assembly (2) from the steering column tilt head assembly (1).
12. Tilt the race and upper shaft assembly 90 degrees to the lower shaft assembly and disengage. If necessary, remove and discard the old centering sphere and spring.
13. Insert the race and upper shaft assembly (1) into J 41688 .
14. Rotate the driver 90 degrees in the counterclockwise direction in order to disengage the centering sphere.
15. Remove the shaft preload spring and the centering sphere from J 41688 .
16. If necessary, discard the old centering sphere and the old joint preload spring.
17. Remove the 4 steering column support TORX® screws from the steering column support assembly (1).
18. Dispose of the 4 steering column support TORX® screws (2).
19. Remove the steering column support assembly (1) from the steering column jacket assembly (3).
20. Inspect the steering column for accident damage. Refer to «Steering Column Accident Damage Inspection»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-column-accident-damage-inspection) .

1. Install the steering column support assembly (1) to the steering column jacket assembly (3).
2. Install the 4 new steering column support TORX® screws (2). Tighten: Tighten the 4 steering column support TORX® screws to 17 N.m (13 lb ft).
3. Lubricate the centering sphere (1) with GM P/N 12345718 (Canadian P/N 10953516).
4. Install the centering sphere (1) and the joint preload spring (2) into J 41688 .
5. Compress the centering sphere and joint preload spring. Rotate the driver 90 degrees in the clockwise direction until the arms lock in place.
6. Install the race and upper shaft assembly (1) into J 41688 .
7. Rotate the race and upper shaft assembly (1) 90 degrees.
8. Remove the race and upper shaft assembly with J 41688 .
9. Rotate the race and upper shaft assembly 90 degrees from J 41688 and remove with the race and upper shaft assembly.
10. Lubricate the centering sphere with GM P/N 12345718 (Canadian P/N 10953516).
11. Install the lower shaft assembly to the race and upper shaft assembly.
12. Install the steering shaft assembly (2) into the steering column tilt head assembly (1).
13. Install the steering column tilt head assembly (1) to the steering column jacket assembly (4).
14. Install the 2 pivot pins (3).
15. Stake the pivot pins location (2).
16. Install the following components onto the steering shaft assembly: The adapter and bearing assembly (1) The lower bearing seat (2) The lower bearing spring (3) The lower spring retainer (4) The sensor retainer (5) The steering shaft seal (6)
17. Install the linear shift assembly.
18. Install the 3 flat-head 6-lobed socket tapping screws The linear shift assembly must be out of the PARK position to install the lower socket tapping screw. Tighten: Tighten the 3 flat-head 6-lobed lobed socket tapping screws to 10 N.m (89 lb in).
19. Install the automatic transmission shift lock control.
20. Install the gear shift lever and put the column in the NEUTRAL position.
21. Adjust the automatic transmission shift lock control using the following steps: Pull the tab (1) out on the block side (2) of the automatic transmission shift lock control. Press on the adjuster block (2) to compress the internal adjuster spring to disengage the adjuster teeth. Slide the adjuster block (2) as far away from the solenoid as possible. Lock in place by pushing the tab (1) back in.
22. Inspect the automatic transmission shift lock control using the following steps: The automatic transmission shift lock control must lock the shift lever clevis when it is put into the PARK position. When the column is installed in the vehicle you will not be able to shift the gear shift lever out of the PARK position without pressing on the brake pedal. The solenoid will be energized. Readjust if needed.
23. Install the tilt spring assembly only. Refer to «Tilt Spring Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
24. Install the ignition lock cylinder case. Refer to «Ignition Lock Cylinder Case Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .

1. Disable the SIR coil. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.
2. Remove the steering wheel from the column. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
3. Remove the steering column from the vehicle. Refer to «Steering Column Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Inspect the steering column for accident damage. Refer to «Steering Column Accident Damage Inspection»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column__steering-column-accident-damage-inspection) .
5. Remove the upper and lower trim cover. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Disconnect all connectors attached to the wire harness assembly.
7. Remove the bulkhead connector.

1. Slide the bulkhead connector into the steering column.
2. Connect all of the connectors to the wire harness assembly.
3. Install the upper and lower trim cover. Refer to «Steering Column Trim Covers Replacement (Manual Tilt)»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
4. Install the steering column into the vehicle. Refer to «Steering Column Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
5. Install the steering wheel onto the steering column. Refer to «Steering Wheel Replacement»(/buick/lacrosse/i-2004-2009/remont/ignition-switchsteering-lock/#steering-wheel-steering-column) .
6. Enable the SIR system. Refer to «SIR Disabling and Enabling Zone 3»(/buick/lacrosse/i-2004-2009/remont/airbag/#supplemental-inflatable-restraint-system) in SIR.

Inflatable Restraint Steering Wheel Module Coil Centering

1. Verify the following conditions before centering the SIR coil: The wheels on the vehicle are straight ahead. The block tooth (1) of the steering shaft assembly is in the 12 o'clock position. The ignition switch is in the LOCK position.
2. If the front (5) of the SIR coil has a centering window (4) and the back side (2) includes a spring service lock (1), perform the following steps: Hold the SIR coil with the face up. While depressing the spring service lock, rotate the coil hub clockwise until the coil ribbon stops. Rotate the coil hub slowly, counterclockwise, until the centering window appears yellow and both arrows (3) line up. Release spring service lock between the locking tab. The SIR coil is now centered. Align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.
3. If the front (4) of the SIR coil has a centering window (3) and the back side (1) includes NO spring service lock, perform the following steps: Hold the SIR coil with the face up. Rotate the coil hub clockwise until the coil ribbon stops. Rotate the coil hub slowly, counterclockwise until the centering window appears yellow and both arrows (2) line up. This is the CENTER position. While holding the coil hub in the CENTER position, align the SIR coil with the horn tower and slide onto the steering shaft assembly.
4. If the front side (3) of the SIR coil has NO centering window, but the back side (2) includes a spring service lock (1), perform the following steps: Hold the SIR coil with the back side up. While depressing the spring service lock, rotate the coil hub in the direction of the arrow (4) until the coil ribbon stops. Still pressing the spring service lock, rotate the coil hub in the opposite direction 21/2 revolutions. Release the spring service lock between locking tabs. The SIR coil is now centered. Align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.
5. If the front side (2) of the SIR coil has NO centering window and the back side (1) includes NO spring service lock, perform the following steps: Hold the SIR coil with the face up. Rotate the coil hub in the direction of the arrow until the coil ribbon stops. Rotate the coil hub, slowly, counterclockwise, for 21/2 revolutions. This is the CENTER position. While maintaining the coil hub in the CENTER position, align the centered SIR coil with the horn tower and slide onto the steering shaft assembly.
6. If double wire harness strap is installed onto the wire harness assembly and column, you must route the wires up against the steering column. One wire harness strap will surround one lead from the coil to the steering column. The other wire harness strap will surround all leads to the steering column.

Steering Wheel Controls Description and Operation

The audio steering wheel control switches duplicate the function of the primary controls of the associated component, through a network of multiple momentary contact switches and a series of resistors. The radio supplies voltage to the switches and monitors the return signal for a specific voltage drop to occur unique to the one pressed. The radio identifies the switch selected to activate the feature, otherwise sends a serial data message that is received by the component controlled, activating the feature. The temperature up/down switch is part of this circuit, if equipped.

This information is intended to diagnosis the circuits between the radio and the audio steering wheel control switches. If the primary control for the device is inoperative, refer to the appropriate information for the component the steering wheel control switch is functioning.

Steering Wheel and Column Description and Operation

The steering wheel and column has 4 primary functions

1. Vehicle steering
2. Vehicle security
3. Driver convenience
4. Driver safety

Vehicle Steering

The steering wheel is the first link between the driver and the vehicle. The steering wheel is fastened to a steering shaft within the column. At the lower end of the column, the intermediate shaft connects the column to the steering gear.

Vehicle Security - Some Vehicle Models

Theft deterrent components are mounted and designed into the steering column. The following components allow the column to be locked in order to minimize theft

1. The ignition switch
2. The steering column lock
3. The ignition cylinder

Driver Convenience

The steering wheel and column may also have driver controls attached for convenience and comfort. The following controls may be mounted on or near the steering wheel or column.

1. The turn signal switch
2. The hazard switch
3. The headlamp dimmer switch
4. The wiper/washer switch
5. The horn pad/cruise control switch
6. The redundant radio/entertainment system controls
7. The tilt or tilt/telescoping functions
8. The navigation OnStar® features
9. The HVAC controls

Driver Safety

In the event of a front-end collision the energy-absorbing steering column compresses, which reduces the chance of injury to the driver. The mounting capsules break away from the mounting bracket in the event of an accident.

Ignition Lock Cylinder Control Actuator

If the vehicle is equipped with a floor-mounted console gear shifter, an added safety feature is an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator system prevents the steering wheel from being locked when the transmission is in gear and the vehicle may be moving. The column ignition lock system consists of a ignition lock cylinder control actuator and a ignition lock cylinder control switch, that is located in the A/T shift lock control switch. The ignition lock cylinder control actuator contains a spring-loaded pin that mechanically prevents the ignition key cylinder from being turned to the Lock position when the transmission is not in the Park position. If vehicle power is lost or the transmission is not in the Park position, the operator will not be able to turn the ignition key to the Lock position and will not be able to remove the ignition key from the column.

Special Tools

Special Tools Illustration Tool Number/Description J 1859-A Steering Wheel Puller J 21854-01 Pivot Pin Remover J 23653-SIR Steering Column Lock Plate Compressor J 41352 Steering Column holding Fixture J 41688 Centering Sphere Installer - Tilt Steering Wheel J 42137 Cam Orientation Plate Adapter J 42578 Steering Wheel Puller Legs J 42640 Steering Column Anti-Rotation Pin

Scheme 8

Scheme 9

Scheme 10

Scheme 11

Scheme 12

Scheme 13

See also:
• SIR DISABLING AND ENABLING ZONES
• Diagnostic System Check - Vehicle
• Entertainment Connector End Views
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• SIR Caution
• Diagnostic Repair Verification
• Control Module References
• Checking Aftermarket Accessories
• Key and Lock Cylinder Coding
• Diagnostic Starting Point - Automatic Transmission Shift Lock Control
• Automatic Transmission Shift Lock Actuator Replacement
• Automatic Transmission Range Selector Cable Adjustment
• Park Lock Cable Adjustment
• Fastener Notice
• Inflatable Restraint Steering Wheel Module Coil Replacement
• Lifting and Jacking the Vehicle
• BATTERY DISCONNECT CAUTION
• Battery Negative Cable Disconnect/Connect Procedure (L26)
• Knee Bolster Replacement - Left
• Programming Theft Deterrent System Components
• SIR INFLATOR MODULE COIL CAUTION
• Component Testing
• Steering Wheel and Column Connector End Views
• Steering Wheel Schematics
• Steering Wheel and Column Description and Operation
• Lock System Does Not Unlock
• Lock System Does Not Lock
• Lock System Sticks in Start
• Ignition Key Cannot Be Removed from the Ignition Lock Cylinder
• Ignition Key Cannot Turn or Sticks in Any Position
• Noise in Steering Column
• Looseness in Steering Column
• Steering Column Tilt Function Inoperative
• Steering Wheel Controls Description and Operation
• Fastener Tightening Specifications
• Special Tools
• Steering Column Accident Damage Inspection