GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 41099 Gear Select/Reverse Lockout Solenoid Socket


    Object Number: 180595  Size: SH
  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the rear tire and wheel assemblies. Refer to Wheel Removal in Tires and Wheels.
  4. Remove the intermediate exhaust pipe to muffler bolts.
  5. Tie off the mufflers to the underbody to support out of the way.

  6. Object Number: 180599  Size: SH
  7. Remove the electronic brake and traction control module (EBTCM) LH mounting bracket bolts.

  8. Object Number: 180600  Size: SH
  9. Remove the EBTCM LH mounting bracket with the EBTCM rubber insulators.
  10. (The EBTCM insulators will remain attached to the LH mounting bracket.)


    Object Number: 180601  Size: SH
  11. Pull lightly to release the EBTCM from the insulator attached to the RH mounting bracket.
  12. Tie off the EBTCM to the underbody to support out of the way.
  13. Remove the rear transverse spring. Refer to Rear Transverse Spring (RWD) in Rear Suspension.
  14. Disconnect the wiring harness and brake pipe clip retainers from the rear suspension crossmember.
  15. Position a transmission jack under the rear suspension crossmember and firmly secure the crossmember to the jack.
  16. BY HAND, remove the rear suspension crossmember mounting nuts.
  17. Important: Observe the clearance between the driveline and the driveline tunnel closeout panel.

  18. Slowly lower the rear suspension crossmember, along with the attached driveline, approximately 38 mm (1.5 inches).
  19. (Lower the rear suspension crossmember and driveline for access to the reverse lockout solenoid.)


    Object Number: 180652  Size: SH
  20. Disconnect the reverse lockout solenoid electrical connector.

  21. Object Number: 71530  Size: SH
  22. Using the J 41099 , remove the reverse lockout solenoid.

Installation Procedure

Tools Required

J 41099 Gear Select/Reverse Lockout Solenoid Socket


    Object Number: 71530  Size: SH
  1. Using the J 41099 , install the reverse lockout solenoid.
  2. Tighten
    Tighten the reverse lockout solenoid to 40 N·m (30 lb ft).

    Notice: 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.


    Object Number: 180652  Size: SH
  3. Connect the reverse lockout solenoid electrical connector.

  4. Object Number: 180601  Size: SH
  5. Slowly raise the rear suspension crossmember to seat to the vehicle frame rails.
  6. BY HAND, install NEW rear suspension crossmember mounting nuts.
  7. Tighten
    Tighten the rear suspension crossmember mounting nuts to 110 N·m (81 lb ft).

  8. Remove the transmission jack from the rear suspension crossmember.
  9. Connect the wiring harness and brake pipe clip retainers to the rear suspension crossmember.
  10. Install the rear transverse spring. Refer to Rear Transverse Spring (RWD) in Rear Suspension.
  11. Remove the tie-off retainers from the electronic brake and traction control module (EBTCM).
  12. Align and install the EBTCM to the insulator attached to the EBTCM RH mounting bracket.

  13. Object Number: 180600  Size: SH
  14. Install the EBTCM LH mounting bracket into position.
  15. Align and install the insulators attached to the EBTCM LH mounting bracket to the EBTCM.

  16. Object Number: 180599  Size: SH
  17. Install the EBTCM LH mounting bracket mounting bolts.
  18. Tighten
    Tighten the EBTCM LH mounting bracket mounting bolts to 50 N·m (37 lb ft).


    Object Number: 180595  Size: SH
  19. Remove the tie-off retainers from the muffler assemblies.
  20. Install the intermediate exhaust pipe to muffler bolts.
  21. Tighten
    Tighten the intermediate exhaust pipe to muffler bolts to 50 N·m (37 lb ft).

  22. Install the rear tire and wheel assemblies. Refer to Wheel Removal in Tires and Wheels.
  23. Lower the vehicle.
  24. Connect the negative battery cable.
  25. Tighten
    Tighten the negative battery cable bolt to 15 N·m (11 lb ft).