Cobalt L4-2.2L (2008)
tighten the bleeder valve.
15. With the right rear wheel hydraulic circuit bleeder valve tightened securely after all air has been purged from the right rear hydraulic circuit, install
a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve.
16. Install a transparent hose over the end of the bleeder valve, then repeat steps 13-14.
17. With the left front wheel hydraulic circuit bleeder valve tightened securely after all air has been purged from the left front hydraulic circuit, install
a proper box-end wrench onto the LEFT REAR wheel hydraulic circuit bleeder valve.
18. Install a transparent hose over the end of the bleeder valve, then repeat steps 13-14.
19. With the left rear wheel hydraulic circuit bleeder valve tightened securely after all air has been purged from the left rear hydraulic circuit, install a
proper box-end wrench onto the RIGHT FRONT wheel hydraulic circuit bleeder valve.
20. Install a transparent hose over the end of the bleeder valve, then repeat steps 13-14.
21. After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves is properly
tightened.
22. Close the J 29532 , or equivalent, fluid tank valve, then disconnect the J 29532 , or equivalent, from the J 44894-A .
23. Remove the J 44894-A from the brake master cylinder reservoir.
24. Fill the brake master cylinder reservoir to the maximum-fill level with GM approved or equivalent DOT-3 brake fluid from a clean, sealed brake
fluid container.
25. Slowly depress and release the brake pedal. Observe the feel of the brake pedal.
26. If the brake pedal feels spongy perform the following steps:
1. Inspect the brake system for external leaks. Refer to Brake System External Leak Inspection (See: Testing and Inspection/Component Tests
and General Diagnostics/Brake System External Leak Inspection) .
2. If equipped with antilock brakes, using a scan tool, perform the antilock brake system automated bleeding procedure to remove any air that
may have been trapped in the brake pressure modulator valve (BPMV). Refer to Antilock Brake System Automated Bleed Procedure (See: ) .
27. Turn the ignition key ON, with the engine OFF. Check to see if the brake system warning lamp remains illuminated.
Important: DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
28. If the brake system warning lamp remains illuminated. Refer to Symptoms - Hydraulic Brakes (See: Testing and Inspection/Symptom Related
Diagnostic Procedures/Symptoms - Hydraulic Brakes) .
