Installation Procedure

Tools Required 

J 42055  Transmission Support Fixture

Fig 1: Differential Plate Seal Flush & Differential Plate
Courtesy of GENERAL MOTORS CORP.
1. Install the transmission to the J 42055  , if removed.
2. Install the differential plate to the transmission, use care not to damage the transmission output seal in the rear of the plate.
3. Position the differential plate seal flush with the transmission case.
Fig 2: Differential, Transmission Bolts & Nuts
Courtesy of GENERAL MOTORS CORP.
4. SLOWLY slide the differential to the transmission.
NOTE: Refer to Fastener Notice in Cautions and Notices.
5. Install the differential to transmission bolts and nuts.

   Tighten:  Tighten the differential to transmission bolts and nuts to 50 N.m (37 lb ft).

Fig 3: Driveline Support Assembly, Bolts & Studs
Courtesy of GENERAL MOTORS CORP.
6. Remove the strap retaining the transmission torque converter.
7. Slowly slide the driveline support assembly to the transmission, while supporting the transmission torque converter.
8. Install the transmission to driveline support assembly bolts/studs.

   Tighten:  Tighten the transmission to driveline support assembly bolts/studs to 50 N.m (37 lb ft).

Fig 4: TOC Rear Upper & Lower Pipe Fittings
Courtesy of GENERAL MOTORS CORP.
9. Remove the caps from the rear of the transmission oil cooler rear pipes and remove the plugs from the fittings on the transmission.
10. ALIGN and HAND-START, then tighten ONLY by hand to seat the transmission oil cooler rear pipes to the fittings on the transmission.

    Tighten:  Tighten the transmission oil cooler rear pipes to transmission fittings to 40 N.m (30 lb ft).

Fig 5: J 42055 & Transmission Jack
Courtesy of GENERAL MOTORS CORP.
11. Position the chainfall, or equivalent, of a lift device in a way which will protect the transmission oil cooler rear pipes and the rear exhaust hangers located on the driveline support assembly.
IMPORTANT: The aid of an assistant will be necessary for the following steps until the driveline is installed into the vehicle.
12. Using the lift device, raise the driveline off the workbench and position the driveline with the J 42055  onto a transmission jack.
13. Connect the J 42055  to the transmission jack.
Fig 6: Propeller Input Shaft & Rear Of Engine Flywheel Housing
Courtesy of GENERAL MOTORS CORP.
14. Remove the lift device from the driveline.
15. Position the driveline under the vehicle.
16. Begin to raise the driveline at the approximate angle used during removal.
17. Position the wiring harness along the driveline support assembly and LOOSELY install the harness into the harness retaining slots.
18. Have an assistant guide the front of the driveline so the propeller input shaft is just to the rear of the engine flywheel housing, then raise the driveline to the PROPER HEIGHT and the PROPER ANGLE to install to the engine.
IMPORTANT: Use care not to use too much force to install the propeller input shaft into the propeller shaft hub. The propeller input shaft front bearing positioning system is designed to withstand an insertion force not greater than 582 N (130 lb).
19. Have an assistant begin to insert the propeller input shaft into the propeller shaft hub while maintaining the proper angle of the driveline, if necessary use a screwdriver to rotate the shaft slightly to bring the splines into alignment.
Fig 7: Transmission Jack Supporting The Differential
Courtesy of GENERAL MOTORS CORP.
20. SLOWLY seat the driveline to the engine flywheel housing while maintaining the proper angle of the driveline.
Fig 8: Wiring Harness Bracket
Courtesy of GENERAL MOTORS CORP.
21. Reposition the wiring harness bracket from near the driveline tunnel wall to align with the appropriate driveline support assembly bolt hole.
Fig 9: Removing/Installing The Five Driveline Support Assembly To Engine Flywheel Housing Bolts
Courtesy of GENERAL MOTORS CORP.
22. Install the five driveline support assembly to engine flywheel housing bolts.

    Tighten:  Tighten the driveline support assembly to engine flywheel housing bolts to 50 N.m (37 lb ft).

23. Install the wiring harness to the wiring harness retainer along the top of the transmission.
24. SLOWLY raise the driveline to approximately 5 cm (2 in) BELOW the final installed height.
Fig 10: Locating Cooler Fittings
Courtesy of GENERAL MOTORS CORP.
25. Remove the caps from the front of the transmission oil cooler rear pipes and remove the plugs from the junction fittings at the engine flywheel housing.
26. ALIGN and HAND-START, then tighten ONLY by hand to seat the transmission oil cooler rear pipes to the junction fittings at the engine flywheel housing.

    Tighten:  Tighten the transmission oil cooler rear pipes to junction fittings at engine flywheel housing to 27 N.m (20 lb ft).

Fig 11: Park/Neutral Position Switch Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
27. Install the transmission wiring harness to LH side of transmission case retaining bolt.

    Tighten:  Tighten the transmission wiring harness to LH side of transmission case retaining bolt to 2.5 N.m (22 lb in).

28. Connect the park/neutral position switch electrical connectors.
Fig 12: View Of Transmission Harness 20-Way Connector
Courtesy of GENERAL MOTORS CORP.
29. Connect the transmission harness 20-way connector.

    Align the arrows on each half of the connector and insert straight down.

Fig 13: Wiring Harness Retainer To Stud At Differential Rear Cover
Courtesy of GENERAL MOTORS CORP.
30. Connect the wiring harness clip to the top of the differential.
31. Connect the wiring harness retainer to the stud at the differential rear cover.
Fig 14: Vehicle Speed Sensor (VSS) Electrical Connector
Courtesy of GENERAL MOTORS CORP.
32. Connect the vehicle speed sensor (VSS) electrical connector.
Fig 15: View Of Transaxle Mount Bracket & Bolts
Courtesy of GENERAL MOTORS CORP.
33. Slowly raise the driveline to final installation height.
34. Remove the jack which supported the engine.
35. Remove the tie-off retainers from the axle shafts.
36. CAREFULLY align and seat the axle shafts to the differential.
37. Install the transaxle mount and bracket to the differential.
38. Install the transaxle mount bracket to differential bolts.

    Tighten:  Tighten the transaxle mount bracket to differential bolts to 50 N.m (37 lb ft).

Fig 16: View Of Rear Suspension Crossmember
Courtesy of GENERAL MOTORS CORP.
39. With the aid of an assistant, begin to raise the rear suspension crossmember (still firmly attached to a transmission jack), to the vehicle frame rails.
40. Guide the rear suspension crossmember alignment pins into the alignment holes in the vehicle frame rails, and guide the transaxle mount studs into the mounting holes in the crossmember, then raise the crossmember to seat to the frame rails.
Fig 17: View Of Jack Supports
Courtesy of GENERAL MOTORS CORP.
41. Using ONLY HAND TOOLS, install NEW rear suspension crossmember mounting nuts.

    Tighten:  Tighten the rear suspension crossmember mounting nuts to 110 N.m (81 lb ft).

Fig 18: View Of Transaxle Mount-To-Rear Crossmember Nuts
Courtesy of GENERAL MOTORS CORP.
42. Remove the transmission jack from the rear suspension crossmember.
43. Release the J 42055  from the transmission, then remove the J 42055  and transmission jack.
44. Install the transaxle mount to rear suspension crossmember nuts.

    Tighten:  Tighten the transaxle mount to rear suspension crossmember nuts to 50 N.m (37 lb ft).

45. Install the differential to transmission lower nut.

    Tighten:  Tighten the differential to transmission lower nut to 50 N.m (37 lb ft).

46. Connect the wiring harness and brake pipe clip retainers to the rear suspension crossmember.
Fig 19: View Of Shock Absorber Mounting To Control Arm
Courtesy of GENERAL MOTORS CORP.
47. Support the lower control arm with a straight jack.
48. Connect the lower ball joint to the suspension knuckle. Refer to Knuckle Replacement in Rear Suspension.
49. Install the shock absorber lower mounting bolt.

    Tighten:  Tighten the rear shock absorber lower mounting bolt to 220 N.m (162 lb ft).

50. Connect the outer tie rod end to the suspension knuckle. Refer to Tie Rod Replacement (Outer End) or Tie Rod Replacement (Suspension Link) in Rear Suspension.
51. Remove the straight jack from the suspension control arm.
52. Repeat steps 45 through 49 for the other side of the vehicle.
53. Install the rear transverse spring. Refer to Rear Transverse Spring Replacement in Rear Suspension.
Fig 20: Releasing The Retainer Securing The Wiring Harness
Courtesy of GENERAL MOTORS CORP.
54. Carefully pull the wiring harness down into the L-shaped brackets along the driveline support assembly, align the harness retainer (locator) (1) to the hole in the forward bracket, then secure in place.
Fig 21: Transmission Shift Control Cable & Bracket
Courtesy of GENERAL MOTORS CORP.
55. Install the transmission shift cable and bracket into position.
56. Connect the transmission shift cable to the transmission shift lever.

    Press to secure the cable.

Fig 22: Shift Control Cable Bracket & Nuts
Courtesy of GENERAL MOTORS CORP.
57. Install the nuts retaining the transmission shift cable bracket to the transmission.

    Tighten:  Tighten the transmission shift cable bracket retaining nuts to 20 N.m (15 lb ft).

Fig 23: Driveline Support Assembly Access Plug
Courtesy of GENERAL MOTORS CORP.