Lumina V6-3.8L VIN K (1998)
11.5. Wait five seconds.
IMPORTANT: In order to assist in freeing the entrapped air, tap lightly on the caliper or braking plate in order to dislodge any trapped air
bubbles.
IMPORTANT: Ensure that the bleeder valves do not leak.
11.6. Repeat this entire procedure until the brake pedal feels firm at half travel and no air bubbles are observed in the bleeder hose.
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Tighten the front caliper bleeder valves to 13 Nm (115 inch lbs.).
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Tighten the rear caliper bleeder valves to 7 Nm (62 inch lbs.).
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Tighten the rear wheel cylinder bleeder valves to 7 Nm (62 inch lbs.).
12. Lower the vehicle.
13. Remove the brake fluid reservoir. Fill the reservoir to the correct level if necessary.
14. Install the brake fluid reservoir cap.
15. Bleed the ABS modulator/master cylinder assembly. Complete the following steps:
15.1.
Attach a clear plastic bleeder hose to the rearward bleeder valve on the ABS brake modulator. Submerge the opposite hose end in a clean
container partially filled with clean brake fluid.
15.2.
Depress the brake pedal with moderate force.
15.3.
Slowly open the rearward bleeder valve and allow the fluid to flow.
15.4.
Close the valve and release the brake pedal.
15.5.
Wait five seconds.
15.6.
Repeat the procedure until air bubbles are no longer visible in the bleeder hose.
15.7.
Relocate the bleeder hose on the forward brake modulator bleeder valve. Submerge the opposite hose end in a clean container partially filled
with clean brake fluid.
15.8.
Depress the brake pedal with moderate force.
15.9.
Slowly open the rearward bleeder valve and allow the fluid to flow.
15.10. Close the valve and release the brake pedal.
15.11. Wait five seconds.
15.12. Repeat the procedure until air bubbles are no longer visible in the bleeder hose.
16. Remove the brake fluid cap.
17. Inspect the brake fluid level in the reservoir. Fill to the correct level if necessary.
18. Install the brake fluid reservoir cap.
19. Turn the ignition switch to the RUN position, then turn off the engine. Apply the brake pedal with moderate force and hold. Note the pedal travel
and feel.
20. If the pedal feels firm and constant, and pedal travel is not excessive, start the engine. With the engine running, recheck the pedal travel. If the
pedal feel is still firm and constant and pedal travel is not excessive, perform a road test on the vehicle. Make several normal (non-ABS) stops
from a moderate speed in order to ensure proper brake system function.
21. If pedal feel is soft or has excessive travel either initially or after engine start, use the following procedure:
21.1.
Using the Scan Tool, release then apply each motor 2-3 times and cycle each solenoid 5-10 times.
21.2.
Apply the front and rear motors in order to ensure that the pistons are in the upmost position. DO NOT DRIVE THE VEHICLE.
21.3.
If a Scan Tool is not available, remove your foot from the brake pedal, then start the engine. Allow the engine to run for at least 10 seconds
in order to initialize the ABS. DO NOT DRIVE THE VEHICLE.
21.4.
After 10 seconds, turn off the ignition.
22. Repeat the initialization procedure five times in order to dislodge any air in the system.
23. Repeat this manual bleeding procedure, starting at Step 1.
24. Perform a vehicle road test. Make several normal (non-ABS) stops from a moderate speed in order to ensure proper brake system function.
