Service Procedure
The following procedure provides instructions for inspecting the bolt that attaches the RIGHT rear brake hose to the brake caliper, and if necessary, bleeding the right rear brake.Inspection
1. Raise the vehicle on a suitable hoist and support as necessary.
2. Remove the RIGHT rear tire and wheel assembly.
Important
The left rear brake caliper and hose is being shown for reference purposes only. The right rear caliper and hose that is being inspected in this recall is similar.
3. Carefully inspect the bolt that attaches the right rear brake hose to the brake caliper for leaking brake fluid.
^ If there is NO indication of brake fluid leakage where the bolt and hose attach to the brake caliper, hold the brake hose fitting firmly in position at the caliper and verify that the bolt is tightened to 48 N.m (35 lb ft). Reinstall the tire and wheel. Tighten the wheel nuts to 140 N.m (103 lb ft). Lower the vehicle. Install the GM Recall Identification Label.
^ If there is brake fluid leaking where the bolt and hose attach to the brake caliper, hold the brake hose fitting firmly in position at the caliper and tighten the bolt to 48 N.m (35 lb ft). Proceed to the Right Rear Brake Bleeding Procedure below.
Right Rear Brake Bleeding Procedure
This bleeding procedure should only be performed if the results of the Inspection Procedure indicated that there was a brake fluid leak. Bleeding of the hydraulic system is done using a pressure bleeder and is limited to the right rear brake. This pressure bleeding procedure is a shortened version of the full-vehicle procedure found in the Service Manual. As a result, the labor time included in this recall for bleeding the brake system is less than the published time found in the LTG.
Tools Required
J 29532 Diaphragm Type Brake Pressure Bleeder, or equivalent
J 35589-A Brake Pressure Bleeder Adapter
Important
^ Do not drive the vehicle until the brake pedal feels firm.
^ Do not reuse the brake fluid that is used during bleeding.
1. Lower the vehicle as necessary to allow for manual bleeding of the right rear brake assembly.
Caution
Refer to the Brake Fluid Irritant Caution in the Cautions and Notices section of the appropriate Service Manual.
Notice
Refer to the Brake Fluid Effects on Paint and Electrical Components Notice in the Cautions and Notices section of the appropriate Service Manual.
Notice
When adding fluid to the brake master cylinder reservoir, use only DOT-3 brake fluid from a clean, sealed brake fluid container. The use of any type of fluid other than the recommended type of brake fluid may cause contamination, which could result in damage to the internal rubber seals and/or rubber linings of the hydraulic brake system components.
2. Open the hood.
3. Clean the outside of the reservoir on and around the reservoir cap prior to removing the cap and diaphragm. Fill the brake master cylinder reservoir as necessary with Delco Supreme 11(R), GM U.S. P/N 12377967, GM Canadian P/N 89021320, or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
4. Install the J 35589-A to the brake master cylinder reservoir.
5. Check the brake fluid level in the J 29532, or equivalent. Add Delco Supreme 11(R), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container as necessary to bring the level to approximately the half-full point.
6. Connect the J 29532, or equivalent to the J 35589-A.
7. Charge the J 29532, or equivalent, air tank to 175-205 kPa (25-30 psi).
8. Open the J 29532, or equivalent, fluid tank valve to allow pressurized brake fluid to enter the brake system.
9. Wait approximately 30 seconds, and then inspect the right rear brake hose to brake caliper-attaching bolt for signs of leakage. Any brake fluid leak identified must be repaired prior to completing this bleed procedure.
10. Install a proper size box-end wrench onto the right rear wheel hydraulic circuit bleeder valve (screw) located on the brake caliper.
11. Install a transparent hose over the end of the bleeder valve.
12. Submerge the open end of the transparent hose into a transparent container partially filled with DOT-3 brake fluid from a clean, sealed brake fluid container.
13. Loosen the bleeder valve to purge the air from the right rear wheel hydraulic circuit. Allow fluid to flow until air bubbles stop flowing from the bleeder, and then tighten the bleeder valve.
14. Close the J 29532, or equivalent, fluid tank valve, and then disconnect the J 29532 or equivalent, from the J 35589-A.
15. Remove the J 35589-A from the brake master cylinder reservoir.
16. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme 11(R), or equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
17. Connect a Tech 2 to the vehicle's diagnostic link connector (DLC) and perform the automatic bleed procedure.
18. After completion of the automatic bleed procedure, slowly depress the brake pedal and verify that it feels firm. Release the pedal.
19. Verify that the fluid in the master cylinder reservoir is at the maximum-fill level.
20. Install the tire and wheel assembly.
Tighten
Tighten the wheel nuts to 140 N.m (103 lb ft).
21. Install the GM Recall Identification Label.