Astro Van AWD V6-4.3L VIN X (2003)
clean, sealed brake fluid container as necessary to bring the level to approximately the half-full point.
10. Connect the J 29532, or equivalent, to the J 29567.
11. Charge the J 29532, or equivalent, air tank to 175 - 205 kPa (25 - 30 psi).
12. Open the J 29532, or equivalent, fluid tank valve to allow pressurized brake fluid to enter the brake system.
13. Wait approximately 30 seconds, then inspect the entire hydraulic brake system in order to ensure that there are no existing external brake fluid
leaks. Any brake fluid leaks identified require repair prior to completing this procedure.
14. Install a proper box-end wrench onto the RIGHT REAR wheel hydraulic circuit bleeder valve, then install a transparent hose over the end of the
bleeder valve.
15. Submerge the open end of the transparent hose into a transparent container partially filled with Delco Supreme II (GM P/N 12377967) or
equivalent DOT-3 brake fluid from a clean, sealed brake fluid container.
16. Loosen the bleeder valve to purge air from the wheel hydraulic circuit. Allow fluid to flow until air bubbles stop flowing from the bleeder, then
tighten the bleeder valve.
17. 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 REAR wheel hydraulic circuit bleeder valve, install a transparent hose over the end of the bleeder
valve, then repeat steps 15-16.
18. 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, install a transparent hose over the end of the bleeder
valve, then repeat steps 15-16.
19. With the right front wheel hydraulic circuit bleeder valve tightened securely, (after all air has been purged from the right front hydraulic circuit),
install a proper box-end wrench onto the LEFT FRONT wheel hydraulic circuit bleeder valve, install a transparent hose over the end of the bleeder
valve, then repeat steps 15-16.
20. After completing the final wheel hydraulic circuit bleeding procedure, ensure that each of the 4 wheel hydraulic circuit bleeder valves are properly
tightened.
21. Close the J29532, or equivalent, fluid tank valve, then disconnect the J29532, or equivalent, from the J 29567.
22. Remove the J 41618 and J 29567 from the brake master cylinder reservoir.
23. Remove the J39177, or equivalent from the metering valve, then install the cap to the metering valve end of the combination valve.
24. Fill the brake master cylinder reservoir to the maximum-fill level with Delco Supreme II (GM P/N 12377967) 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:
26.1.
Inspect the brake system for external leaks.
26.2.
Using a scan tool, perform the antilock brake system automated bleeding procedure to remove any air that may have been trapped in the
BPMV.
27. Turn the ignition key ON, with the engine OFF. Check to see if the brake system warning lamp remains illuminated.
28. If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
