Automatic Transmission Mount Bracket Replacement - Rear

Automatic Transmission Mount Bracket Replacement - Rear

^ Tools Required
- J 42640 Steering Column Anti-Rotation Pin

Removal Procedure





Notice: The wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or intermediate shaft from the steering gear. Failure to do so will cause the SIR coil assembly to become uncentered, which may cause damage to the coil assembly.

1. Lock the steering column by installing J 42640 into the underside of the steering column.





2. Remove the nuts (3) from the rear transaxle brace (2).





3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Remove the left front tire and wheel assembly.
5. Remove the power steering gear heat shield.
6. Disconnect the intermediate shaft and remove the power steering gear to frame mounting bolts.
7. Remove the lower bolts and nut from the rear transaxle mount (1).





8. Remove the 2 nuts (1) from the transaxle mount (2).





9. Remove the rear transaxle mount bracket bolt (1).
10. Set aside or remove rear transaxle brace (2).





11. Remove the 2 remaining rear transaxle mount bracket bolts.
12. Support the rear of the frame with a suitable jack.
13. Remove the rear frame-to-body bolts from both sides.

Important: Insure that all pipes, hoses and wires are clear and not being bound or stressed when lowering the frame.

14. Carefully lower the rear of the frame only enough to allow removal of the rear transaxle mount and bracket. It may also be necessary to push up on the steering gear to facilitate removal of
the mount and bracket.

Installation Procedure





1. Install the rear transaxle Mount and bracket to the vehicle.
2. Apply thread lock compound GM P/N 12345493 or equivalent, to the rear transaxle mount bracket to engine bolts.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the 2 lower bolts to the rear transaxle mount bracket (1).
^ Tighten the bolts to 63 Nm (46 ft. lbs.).





4. Install the rear transaxle brace (2).
5. Install the bolt (1) to the rear transaxle mount bracket and brace.
^ Tighten the bolt to 63 Nm (46 ft. lbs.).





6. Install the rear transaxle mount lower bolts and nut but do not tighten at this time.
7. Carefully raise frame back to original position making sure that the rear transaxle mount studs (1) line up with holes in the rear transaxle mount bracket.
8. Using 16 mm (0.630 inch) dowel pins in the frame alignment holes, align the frame with the body.
9. Install the frame-to-body bolts
^ Tighten the bolts to 112 Nm (83 ft. lbs.).
10. Remove the jack supporting the frame.
11. Tighten the rear transaxle mount lower bolts and nut previously mentioned in step 6.
^ Tighten the rear transaxle mount lower bolts and nut to 50 Nm (37 ft. lbs.).





12. Install the 2 nuts (1) to the rear transaxle mount (2).
^ Tighten the rear transaxle mount nuts to 50 Nm (37 ft. lbs.).
13. Install the intermediate shaft and the power steering gear to frame mounting bolts.
14. Install the power steering gear heat shield.
15. Install the left front tire and wheel assembly.





16. Lower the vehicle.
17. Install nuts (3) to the rear transaxle brace (2).
^ Tighten the nuts to 50 Nm (37 ft. lbs.).





18. Remove the steering column locking tool J 42640 from the steering column.