Shift Interlock Systems Pontiac Grand AM V

DESCRIPTION & OPERATION

INTRODUCTION

The automatic transmission shift lock control is a safety device that prevents an inadvertent shift out of Park when the ignition is ON. The driver must press the brake pedal before moving the gearshift lever out of the Park position. The system consists of the following components

1. Automatic transmission shift lock control solenoid.
2. Automatic transmission shift lock control switch (stoplamp switch).
3. The Park/Neutral Position (PNP) switch.

With the ignition in the ON position, battery positive voltage is supplied to the PNP switch. With the transmission in the Park position, the contacts in the PNP switch are closed. This allows current to flow through the switch to the stoplamp switch. The circuit continues through the normally-closed switch to the A/T shift lock control solenoid. The A/T shift lock control solenoid is permanently grounded. This energizes the A/T shift lock control solenoid, mechanically locking the shift linkage in the PARK position. When the driver presses the brake pedal, the contacts in the stoplamp switch open, de-energizing the A/T shift lock control solenoid. This allows the gearshift lever to move from the Park position.

A/T SHIFT LOCK SOLENOID

Note. A/T shift lock solenoid may also be referred to as shift interlock solenoid.

Gearshift lever cannot be moved from Park position without simultaneously applying brake pedal with ignition switch turned to ON position. When brake pedal is applied, stoplamp switch interrupts circuit to A/T shift lock solenoid, de-energizing A/T shift lock solenoid, which unlocks gearshift lever from Park position. See WIRING DIAGRAMS .

DIAGNOSTIC STARTING POINT

Begin the system diagnosis by reviewing DESCRIPTION & OPERATION . Reviewing the description and operation information will help you determine the correct symptom diagnostic procedure when a malfunction exists. Reviewing the description and operation information will also help you determine if the condition described by the customer is normal operation. See SYMPTOM DIAGNOSIS in order to identify the correct procedure for diagnosing the system and where the procedure is located.

Visual/Physical Inspection

Inspect for aftermarket devices which could affect the operation of the A/T shift lock control system. Inspect easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittents

Intermittent faulty electrical connections or wiring may be the cause of intermittent conditions. Check for loose, bent or corroded terminals and terminal tension. Check for cut, bare or pinched wiring. Simulate the condition that is potentially causing the intermittent connection, either by wiggling the connections or the wiring, test driving or performing other operations while observing scan tool, DVOM or other testing equipment. See WIRING DIAGRAMS .

Symptom List

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

1. Shift Lever Does Not Move With Brake Pedal Depressed
2. Shift Lever Can Be Moved Without Brake Pedal Depressed

See appropriate test under SYMPTOM TESTS .

SYMPTOM TESTS

SYMPTOM TEST INDEX

TEST A: SHIFT LEVER DOES NOT MOVE WITH BRAKE PEDAL DEPRESSED

Note. For circuit reference, see CONNECTOR IDENTIFICATION and WIRING DIAGRAMS .

1. Did you review description and operation and perform the necessary inspections? If so, go to next step. If not, see «DESCRIPTION & OPERATION»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems__description-operation) .
2. Turn ignition switch to ON position. Depress the brake pedal. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, check for intermittent condition. See «SYMPTOM DIAGNOSIS»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under TROUBLE SHOOTING. If not, go to next step.
3. Turn ignition switch to OFF position. Disconnect the stoplamp switch. Turn ignition switch to ON position. Depress the brake pedal. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, go to step 5 . If not, go to next step.
4. Turn ignition switch to OFF position. Disconnect the A/T shift lock control solenoid. Turn ignition switch to ON position. Depress the brake pedal. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, go to step 7 . If not, go to step 6 .
5. Inspect the stoplamp switch for poor connections. Did you find and correct the condition? If so, go to step 10 . If not, go to step 8 .
6. Inspect the A/T shift lock control solenoid for poor connections. Did you find and correct the condition? If so, go to step 10 . If not, go to step 9 .
7. Repair the A/T shift control solenoid supply circuit (Dark Green/White wire) for short to voltage. After repairs, go to step 10 .
8. Replace the stoplamp switch. See «STOPLAMP SWITCH»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under REMOVAL & INSTALLATION. After repairs, go to step 10 .
9. Replace the A/T shift lock control solenoid. See «A/T SHIFT LOCK SOLENOID»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under REMOVAL & INSTALLATION. Did you complete the replacement? If so, go to next step.
10. Operate the system in order to verify the repair. Did you find and correct the condition? If so, system is okay. If not, go to step 2 .

TEST B: SHIFT LEVER CAN BE MOVED WITHOUT BRAKE PEDAL DEPRESSED

Note. For circuit reference, see CONNECTOR IDENTIFICATION and WIRING DIAGRAMS .

1. Did you review description and operation and perform the necessary inspections? If so, go to next step. If not, see «DESCRIPTION & OPERATION»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems__description-operation) .
2. Apply the parking brake and block the wheels. Turn ignition switch to ON position. Attempt to move the gearshift lever out of the Park position. Does the gearshift lever move out of the Park position? If so, go to next step. If not, check for intermittent condition. See «SYMPTOM DIAGNOSIS»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under TROUBLE SHOOTING.
3. Turn ignition switch to OFF position. Connect a test light between ground and the ignition circuit at the PNP switch (Pink wire). Turn ignition switch to ON position. Does the test light illuminate? If so, go to next step. If not, go to step 12 .
4. Place gearshift lever in the Park position. Connect a test light between ground and the PNP switch park signal circuit (Light Green wire) at the PNP switch. Does the test light illuminate? If so, go to next step. If not, go to step 9 .
5. Connect a test light between ground and the PNP switch park signal circuit (Light Green wire) at the stoplamp switch. Does the test light illuminate? If so, go to next step. If not, go to step 13 .
6. Connect a test light between ground and the A/T shift lock control solenoid supply circuit (Dark Green/White wire) at the stoplamp switch. Press and release the brake pedal several times. Does the test light turn ON and OFF with the brake pedal? If so, go to next step. If not, go to step 10 .
7. Connect a test light between ground and the A/T shift lock control solenoid supply circuit (Dark Green/White wire) at the solenoid. Press the brake pedal. Does the test light illuminate? If so, go to next step. If not, go to step 14 .
8. Connect a test light between the ground circuit (Black wire) at the A/T shift lock control solenoid and battery voltage. Does the test light illuminate? If so, go to step 11 . If not, go to step 15 .
9. Inspect the PNP switch for poor connections. Did you find and correct the condition? If so, go to Step 19 . If not, go to step 16 .
10. Inspect stoplamp switch harness connector for poor connections. Did you find and correct the condition? If so, go to step 19 . If not, go to step 17 .
11. Inspect the A/T shift lock control solenoid for poor connections. Did you find and correct the condition? If so, go to step 19 . If not, go to step 18 .
12. Repair the open in the ignition feed circuit (Pink wire). After repairs, go to step 19 .
13. Repair the open in the PNP switch park signal circuit (Light Green wire). After repairs, go to step 19 .
14. Repair the open in the A/T shift lock control solenoid supply circuit (Dark Green/White wire). After repairs, go to step 19 .
15. Repair the open in the A/T shift lock control solenoid ground circuit (Black wire). After repairs, go to step 19 .
16. Replace the PNP switch. See appropriate AUTOMATIC article in AUTOMATIC TRANSMISSIONS. After repairs, go to step 19 .
17. Replace the stoplamp switch. See «STOPLAMP SWITCH»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under REMOVAL & INSTALLATION. After repairs, go to step 19 .
18. Replace the A/T shift lock control solenoid. See «A/T SHIFT LOCK SOLENOID»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems) under REMOVAL & INSTALLATION. After repairs, go to next step.
19. Operate the system in order to verify the repair. Did you find and correct the condition? If so, system is okay. If not, go to step 2 .

ADJUSTMENTS

Note. For additional adjustment procedure information, see appropriate AUTOMATIC article in TRANSMISSION SERVICING.

STOPLAMP SWITCH

Note. Adjust the stoplamp switch and cruise control release at the same time. The adjustment procedures for the stoplamp switch and the cruise control release switch are identical.

1. Insert the stoplamp switch (3) into the retainer (2) until the switch body is seated on the retainer. (Scheme 112)
2. Pull the brake pedal (4) upward against the internal pedal stop. (Scheme 112)
3. Turn the switch (3) 90 degrees clockwise in order to lock the switch into position and adjust. (Scheme 113)

Scheme 112

Scheme 113

REMOVAL & INSTALLATION

Note. For additional steering column and related component information, see appropriate STEERING COLUMN SWITCHES article in ACCESSORIES & EQUIPMENT or STEERING COLUMNS article in STEERING.

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.

Removal (Alero)

1. Remove the front floor console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. Gently pull rearward on the bottom of the instrument panel (IP) accessory trim plate to disengage the retainers. (Scheme 114) Disconnect the vacuum hoses and the electrical connectors from the HVAC controls. (Scheme 115)
3. Disconnect the electrical connector from the 12-volt power supply. Remove the 12-volt power supply from the IP accessory trim plate, if required. Remove trim plate.

Installation

1. Install the HVAC controls to the IP accessory trim plate. (Scheme 115) Install the 12-volt power supply to the IP accessory trim plate, if required.
2. Connect the electrical connector to the 12-volt power supply. Connect the vacuum hoses and the electrical connectors to the HVAC controls.
3. Install the IP accessory trim plate, pressing the plate into place until fully seated. (Scheme 114) Install the front floor console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).

Scheme 114

Scheme 115

Removal (Grand Am)

1. Apply the park brake. Place gearshift lever in the LOW position. Using a small flat-bladed tool, remove the ignition switch bezel. Using a flat-bladed tool, disengage the accessory trim plate from the instrument panel. (Scheme 116) Disconnect the electrical connectors.
2. Remove the cigar lighter from the accessory trim plate. See «CIGAR LIGHTER ASSEMBLY (GRAND AM)»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems__cigar-lighter-assembly-grand-am). Remove the instrument panel accessory switch mounting plate bracket bolts and bracket. (Scheme 116) Remove the accessory trim plate.

Scheme 116

1. Install the instrument panel accessory switch mounting plate bracket and bolts. (Scheme 116) Tighten the instrument panel accessory switch mounting plate bracket bolts to 27 INCH lbs. (3 N.m). Install the cigar lighter to the instrument panel accessory trim plate. See «CIGAR LIGHTER ASSEMBLY (GRAND AM)»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems__cigar-lighter-assembly-grand-am). Connect the electrical connectors.
2. Install the instrument panel accessory trim plate by pressing the plate into place until fully seated. (Scheme 116) Install the ignition switch bezel. Press the bezel into place until fully seated. Place gearshift lever in the Park position. Release the parking brake.

Removal

1. Disconnect the negative battery cable. Remove the center console. See «CONSOLE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. Disconnect the electrical connector from the A/T shift lock control solenoid. (Scheme 117) Remove both ends of the AT shift lock control solenoid from pivot points (1). (Scheme 118)

Scheme 117

Scheme 118

1. Install the upper clip of the AT shift lock control solenoid onto the upper pivot point, and the lower clip onto the lower pivot point. (Scheme 118) Install the center console. See «CONSOLE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. Connect the electrical connector to the AT shift lock control solenoid. (Scheme 117) Connect the negative battery cable.

CIGAR LIGHTER ASSEMBLY (GRAND AM)

Note. Tools required: Cigar Lighter Socket Remover (J-42059).

1. Remove the cigar lighter fuse. Remove the cigar lighter element. Remove the cigar lighter socket by placing one side of the "T" portion of socket removal tool into the tab window. Angle the other side of the tool into the opposite tab window. Pull the socket straight out. (Scheme 119)
2. Remove the tool from the lighter socket. Disconnect the electrical connector from the cigar lighter socket. Remove the cigar lighter retainer using your index finger. Pull the retainer out. (Scheme 120)

Scheme 119

Scheme 120

1. Position the cigar lighter retainer with the key to the slot into the cigar lighter hole. (Scheme 121) Install the cigar lighter retainer by pressing the retainer into place until fully seated. Connect the electrical connector to the cigar lighter socket.
2. Align the cigar lighter socket to the retainer and press the socket into place until fully seated. (Scheme 122) Install the cigar lighter fuse. Install the cigar lighter element. Inspect the lighter for proper operation.

Scheme 121

Scheme 122

1. Position the front seats to the most rearward position. Position the parking brake lever to the full upward position. Remove the mats from the instrument panel center compartment and from the front floor console rear compartment.
2. Perform one of the following procedures: For manual transmission, unsnap the shifter boot. For automatic transmission, remove the gearshift lever knob retainer and remove the gearshift lever knob.
3. Remove the trim plate from the transmission shift opening. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Remove the rear bolts from the console storage compartment. Remove the retainers from the sides of the console. Use a small flat-bladed tool at the front edge of the console to remove the screw covers. Remove the front screws from the console.
4. Release the front retainers by pulling outward on the front sides of the console. (Scheme 123) Remove the front floor console, pulling up and rearward, guiding the boot over the parking brake lever.

Scheme 123

1. Install the front floor console, sliding forward and downward, guiding the boot over the parking brake lever. Position and engage the front retainers by pressing inward, until the retainers are fully seated. Install the rear bolts to the console storage compartment. Tighten the bolts to 89 INCH lbs. (10 N.m). (Scheme 123) Install the retainers to the sides of the console.
2. Install the front screws to the console. Tighten the screws to 18 INCH lbs. (2 N.m). (Scheme 123) Install the screw covers at the front of the console. Press the covers into place until fully seated. Install the trim plate to the transmission shift opening. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
3. Perform one of the following procedures: For manual transmission, install the shifter boot. For automatic transmission, install the gearshift lever knob and install the gearshift lever knob retainer.
4. Install the mats to the instrument panel center compartment and to the front floor console rear compartment. Release the parking brake lever to the full downward position. Move the front seats to the original position.

1. Position the front seat to the most rearward position. Remove the gearshift lever knob retainer and remove the shift knob. Remove the front floor console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Remove the instrument panel accessory trim plate. See «ACCESSORY TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Lift up the front floor console armrest and remove the rubber mat from the storage compartment. Remove the rear bolts from the console storage compartment. (Scheme 123)
2. Remove the center bolts from the sides of the console. (Scheme 123) Remove the front screw covers at the front of the console, using a small flat-bladed tool at the front edge. Remove the front screws from the console. Remove the front nuts from the console bracket. Remove the front floor console, pulling up and rearward, guiding the boot over the parking brake lever.

1. Install the front floor console, sliding forward and downward, guiding the boot over the parking brake lever. Position and engage the front retainers by pressing inward, until the retainers are fully seated. Install the front nuts to the console bracket. Tighten the nuts to 18 INCH lbs. (2 N.m). (Scheme 123)
2. Install the center bolts to the sides of the console. Tighten the bolts to 89 INCH lbs. (10 N.m). Install the front screws to the console. Tighten the screws to 18 INCH lbs. (2 N.m). Install the screw covers at the front of the console. Press the covers into place until fully seated. Install the rear bolts to the console storage compartment. Tighten the bolts to 89 INCH lbs. (10 N.m). Install the instrument panel accessory trim plate. See «ACCESSORY TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
3. Install the console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Release the parking brake lever to the full downward position. Install the rubber mat to the storage compartment, and lower the front floor console armrest. Install the gearshift lever knob and install the shift knob retainer. Reposition the front seats to the original position.

1. Apply the parking brake. Place the gearshift lever in the Neutral position. Using a small flat-bladed tool, remove the shifter knob U-clip (1). (Scheme 124) Remove the shifter knob by pulling upward.
2. Lift the console trim plate to disengage the retainers. (Scheme 125) Disconnect the traction control switch connector. Rotate the shift indicator lamp socket counterclockwise. Remove the socket from the trim plate. Release the traction control switch retainers, and remove the switch. Remove the trim plate from the transmission shift opening.

Scheme 124

Scheme 125

1. Install the traction control switch to the trim plate. Place the shift indicator lamp socket into the trim plate opening. Rotate the socket clockwise to secure. Connect the traction control switch connector. Align the trim plate retainers to the slots in the front floor console. (Scheme 125)
2. Install the trim plate. Press the trim plate into place until fully seated. Place the gearshift lever knob to the gearshift lever. Install the shifter knob U-clip (1). Press the clip into place until fully seated. (Scheme 124) Place the gearshift lever in the Park position. Release the parking brake.

1. Apply the parking brake. Position the gearshift lever in the Neutral position. Release the front floor console transmission shift opening trim plate seal, using a small flat-bladed tool. (Scheme 126)
2. Remove the front floor console trim plate seal by rotating 90 degrees and guiding it over the shift handle. (Scheme 127)

Scheme 126

Scheme 127

1. Position the front floor console trim plate seal over the gearshift lever knob by sliding down and rotating 90 degrees. (Scheme 127) Install the front floor console trim plate seal. Ensure the seal is fully seated. (Scheme 126)
2. Place the gearshift lever in the Park position. Release the parking brake.

1. Remove the Instrument Panel (IP) cluster trim plate. See «INSTRUMENT PANEL CLUSTER TRIM»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. On Grand Am, remove the 2 IP cluster screws. (Scheme 128)
3. On Alero, remove the 4 IP cluster screws. (Scheme 129)
4. On all models, pull the IP cluster rearward. Disconnect the cluster lead. Remove the IP cluster.

1. Connect the cluster lead to the IP cluster. Position the cluster into the cluster pocket.
2. On Alero, install the 4 IP cluster screws. Tighten the screws to 18 INCH lbs. (2 N.m). (Scheme 129)
3. O Grand Am, install the 2 IP cluster screws. Tighten the screws to 18 INCH lbs. (2 N.m). (Scheme 128)
4. Install the IP cluster trim plate.

Scheme 128

Scheme 129

1. Remove the screws from the Instrument Panel (IP) cluster trim plate. (Scheme 130)
2. Pull the IP cluster trim plate (1) rearward. Pull up and out to release the lower retainers. Disconnect the electrical connector (2) from the trip reset switch (3).
3. Disengage the retainers on the trip reset switch. Remove the trip reset switch from the IP cluster trim plate. Remove the IP cluster trim plate.

1. Install the trip reset switch (3) to the IP cluster trim plate (1). Press the switch into place until fully seated.
2. Connect the electrical connector (2) to the trip reset switch. Position the retainers on the IP cluster trim plate to the slots in the IP.
3. Install the IP cluster trim plate screws. (Scheme 130) Tighten the screws to 18 INCH lbs. (2 N.m).

Scheme 130

1. Remove the upper trim cover from the steering column. See «STEERING COLUMN TRIM COVERS»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. Remove the lower screws from the Instrument Panel (IP) cluster trim plate. (Scheme 131) Remove the upper screws (1) from the IP cluster trim plate. (Scheme 132) Remove the IP cluster trim plate.

1. Position the trim plate tabs to the retainers on the IP cluster. Install the upper screws (1) to the IP cluster trim plate. Tighten the screws to 18 INCH lbs. (2 N.m). (Scheme 132)
2. Install the lower screws to the IP cluster trim plate. Tighten the screws to 18 INCH lbs. (2 N.m). (Scheme 131)
3. Install the upper trim cover to the steering column. See «STEERING COLUMN TRIM COVERS»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).

Scheme 131

Scheme 132

1. Remove the retainers (2) from the Instrument Panel (IP). (Scheme 133) Remove the outboard IP insulator (1).
2. To install, reverse removal procedure. Install the retainers (2). (Scheme 133)

Scheme 133

1. Disconnect the negative battery cable. Remove the console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
2. Remove the IP accessory trim plate. See «ACCESSORY TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Remove the instrument panel cluster. See «INSTRUMENT PANEL CLUSTER»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
3. Disconnect the reverse lockout cable from the shifter. Remove the reverse lockout cable from the shifter bracket. (Scheme 134)
4. Remove the ignition switch bolts. (Scheme 135) Position the ignition switch in the IP cluster opening. Turn the ignition key to the on position.
5. Use a flat bladed tool to release the lock from the ignition switch. (Scheme 136) Tie a string to the ignition switch end of the cable. Feed the cable from the IP and from under the carpet at the shifter location.

1. Tie the string to the ignition switch end of the new cable. Use the string to guide the new cable to the original routing position. Remove the string. Install the cable to the ignition switch. (Scheme 136)
2. Position the ignition switch in the IP. Install the ignition switch bolts. (Scheme 135)
3. Install the IP accessory trim plate. See «ACCESSORY TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
4. Install the IP cluster. See «INSTRUMENT PANEL CLUSTER»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems).
5. Install the reverse lockout cable to the shifter bracket. Connect the reverse lockout cable to the shifter. (Scheme 134)
6. Install the console trim plate. See «CONSOLE TRIM PLATE»(/pontiac/grand-am/v-1998-2005/remont/automatic-trans/#shift-interlock-systems). Connect the negative battery cable.

Scheme 134

Scheme 135

Scheme 136

Remove the retaining screws from the lower steering column trim cover (3). Remove the upper column trim cover (1) by tilting up and unsnapping from the lower column trim cover hinges (3). (Scheme 137) Remove the tilt lever. Remove the lower column trim cover (3) from the steering column (2).

Install the lower column trim cover (3) to the steering column (2). Install the tilt lever. Install the upper column trim cover (1) to the steering column (2). (Scheme 137) Install the lower steering column trim cover (3) retaining screws. Tighten the column screws to 18 INCH lbs. (2 N.m).

Scheme 137

Remove the driver side sound insulator. See INSULATOR PANEL (LEFT SIDE). Remove the electrical connection. Remove the stoplamp switch (3), by grasping the stoplamp switch and turning it 90 degrees counterclockwise while pulling toward the rear of the vehicle. (Scheme 138)

Scheme 138

Insert the stoplamp switch (3) into the retainer until the switch body is seated on the retainer (2). Pull the brake pedal upward against the internal pedal stop. Turn the switch 90 degrees clockwise in order to lock the switch into position. Connect the electrical connector (4). Adjust the stoplamp switch (3). Install the driver's side sound insulator. See INSULATOR PANEL (LEFT SIDE) .

Scheme 139

Scheme 140

Scheme 141

Scheme 142

Scheme 143

Shift Interlock System Wiring Diagram (Alero & Grand Am - 2001). Scheme 144

Shift Interlock System Wiring Diagram (Alero & Grand Am - 2002). Scheme 145

See also:
• WIRING DIAGRAMS
• DESCRIPTION & OPERATION
• SYMPTOM TESTS
• A
• B
• CIGAR LIGHTER ASSEMBLY (GRAND AM)