Service Procedure
Service ProcedureV6 Engine
Note
The location of the leak (1) is shown above. The power steering cooler hose may leak from the hose clamp.
1. Raise and support the vehicle. Refer to the Lifting and Jacking the Vehicle procedure in SI.
2. Place a drain pan under the repair area.
3. Remove the power steering hose clamps.
4. Remove the power steering hose from the vehicle.
5. Measure 25 mm (1 in) from both ends of new power steering hose.
6. Mark the new power steering hose measurements with a white or yellow marker as shown in illustration.
7. Apply GM Super Lube(R), P/N 12346241, or equivalent to the inside ends of the new power steering hose.
8. Slide the new clamps onto the new power steering hose.
9. Install the new power steering hose.
10. Position the power steering hose clamps between the white or yellow measurement lines created in Step 6 and the end of the new hose. Ensure the clamp is NOT placed over the hard line flare.
11. Tighten the clamps until the torque cap breaks off of the clamp.
12. Clean the fluid from the underbody of the vehicle.
13. Lower the vehicle.
14. Check the power steering fluid. Add power steering fluid and bleed the system. Refer to the Checking and Adding Power Steering Fluid procedure in SI.
V8 Engine
Note
The location of the leak (1) is shown above. Fittings on the hose are crimped socket and are not likely to leak.
Note
- Two holes will be drilled for retro-fitting 2006 cradles with 2007 cooler pipe.
- Technician will need to remove one clip from cooler pipe on top and replace with isolator and move the other to the front face of the cradle (and replace with isolator).
- Technician will need to glue down the two isolators with Instant Adhesive-Gel, P/N 12345632 (US(, 10953475 (CN), or equivalent, such as SAF-T-LOK IB-45 (ETHILCIANOCRILATO).
1. Raise and support the vehicle. Refer to the Lifting and Jacking the Vehicle procedure in SI.
2. Place a drain pan under the vehicle to capture the power steering fluid when disconnecting the power steering return line.
3. Remove the air deflector.
4. Remove the power steering cooler pipe/hose from the retaining clips on the frame.
5. Disconnect both stabilizer shaft links from the shaft.
6. Remove the left side engine mount lower nuts from the frame.
7. Remove the left side transmission mount lower nuts from the frame.
8. Remove the right side engine mount lower nuts from the frame.
9. Support and raise the transmission. Raise the transmission about 51-76 mm (2-3 in).
10. Support the rear of the frame (cradle) using an adjustable jackstand.
11. Remove the rear frame bolts from the frame.
Caution
To avoid part damage, do NOT lower the rear frame (cradle) more than 76 mm (3 in).
12. Lower the rear frame (cradle) no more than 76 mm (3 in).
13. Remove the right side engine mount bracket bolts.
14. Remove the right side engine mount and bracket from the vehicle.
15. Disconnect the power steering cooler pipe/hose from the gear.
16. Remove the power steering cooler pipe/hose clamp from the pipe/hose and return line.
17. Disconnect the power steering cooler pipe/hose from the return line.
18. Remove the power steering cooler pipe/hose assembly from the vehicle.
19. Install the power steering cooler pipe/hose assembly to the vehicle with the new cooler installed over the front of the cradle as shown.
20. Connect the power steering cooler pipe/hose to the return line and install the clamp.
21. Connect the power steering cooler pipe/hose to the gear.
Note
Glue should be Instant Adhesive-Gel, P/N 12345632 (US), 10953475 (CN), or equivalent, such as SAF-T-LOK IB-45 (ETHILCIANOCRILATO).
22. Remove the clip and replace with glued isolator (1). Isolator is smaller than what picture shows.
Note
Glue should be Instant Adhesive-Gel, P/N 12345632 (US), 10953475 (CN), or equivalent, such as SAF-T-LOK IB-45 (ETHILCIANOCRILATO).
23. Move the other clip to the front of the cradle and replace with glued isolator (2).
Note
The hole should be drilled using a 7/32 in drill bit and is located 402mm (15-13/16 in) from the weld and 19mm (3/4 in) from the top of the cradle. The z-bracket should be riveted to the cradle using P/N 10125439 (instruction sheet may show P/N 11516301, but it may not be available).
24. Drill a hole in the cradle through the z-bracket.
Note
The hole should be drilled using 1/4 in drill bit and is located 40mm (1-9/16 in) from the weld and 16mm (5/8 in) from the top of the cradle.
25. Drill to fit clip in front of cradle (3).
26. Remove the cardboard protector from fin cooler.
27. Install the right side engine mount and bracket to the vehicle.
28. Install the right side engine mount bracket bolts.
Tighten
Tighten the engine mount bracket bolts to 50 Nm (37 lb ft).
29. Raise the rear of the frame (cradle) using an adjustable jackstand.
30. Install the rear frame bolts.
Tighten
Tighten the rear frame bolts to 160 Nm (118 lb ft).
31. Remove the adjustable jackstand from under the frame.
32. Lower the transmission and remove the support.
33. Install the left side transmission mount lower nuts to the frame.
Tighten
Tighten the left side transmission mount lower nuts to 47 Nm(35 lb ft).
34. Install the right side engine mount lower nuts to the frame.
Tighten
Tighten the right side engine mount lower nuts to 50 Nm (37 lb ft).
35. Install the left side engine mount lower nuts to the frame.
Tighten
Tighten the left side engine mount lower nuts to 50 Nm (37 lb ft).
36. Connect both stabilizer shaft links to the shaft.
Tighten
Tighten the stabilizer link nuts to 60 Nm (44 lb ft).
37. Install the power steering cooler pipe/hose to the frame mounted retaining clips.
38. Install the air deflector.
39. Clean power steering fluid from the underbody of the vehicle.
40. Remove the drain pan.
41. Lower the vehicle.
42. Check the power steering fluid. Add fluid and bleed the system. Refer to Checking and Adding Power Steering Fluid procedure in SI.