Grand Prix V6-3.8L VIN 2 (2004)
Brake Master Cylinder: Service and Repair
Master Cylinder Reservoir
Master Cylinder Reservoir - Filling
Master Cylinder Reservoir Filling
Caution:
Refer to Brake Fluid Irritant Caution in Service Precautions.
Notice:
When adding fluid to the brake master cylinder reservoir, use only Delco Supreme II, GM P/N 12377967 (Canadian P/N 992667), or
equivalent 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 hydraulic brake system
components.
Notice:
Refer to Brake Fluid Effects on Paint and Electrical Components in Service Precautions.
See: Service Precautions/Vehicle Damage Warnings/Brake Fluid Effects on Paint and Electrical Components Notice
1. Visually inspect the brake fluid level through the brake master cylinder reservoir.
2. If the brake fluid level is at or below the half-full point during routine fluid checks, the brake system should be inspected for wear and possible
brake fluid leaks.
3. If the brake fluid level is at or below the half-full point during routine fluid checks, and an inspection of the brake system did not reveal wear or
brake fluid leaks, the brake fluid may be topped-off up to the maximum-fill level.
4. If brake system service was just completed, the brake fluid may be topped-off up to the maximum-fill level.
5. If the brake fluid level is above the half-full point, adding brake fluid is not recommended under normal conditions.
6. If brake fluid is to be added to the master cylinder reservoir, clean the outside of the reservoir on and around the reservoir cap prior to removing
the cap and diaphragm. Use only Delco Supreme II, GM P/N 12377967 (Canadian P/N 992667), or equivalent DOT-3 brake fluid from a clean,
sealed brake fluid container.
Master Cylinder Reservoir - Replacement
Master Cylinder Reservoir Replacement
Removal Procedure
Caution:
Refer to Brake Fluid Irritant in Service Precautions.
See: Service Precautions/Technician Safety Information/Brake Fluid Irritant Caution
Notice:
Refer to Brake Fluid Effects on Paint and Electrical Components in Service Precautions.
See: Service Precautions/Vehicle Damage Warnings/Brake Fluid Effects on Paint and Electrical Components Notice
1. Remove the master cylinder from the vehicle. Refer to Master Cylinder Replacement.
2. Secure the master cylinder in a vise. Do not clamp the master cylinder body, secure only at the flange.
3. Remove the brake fluid level sensor. Using needle nose pliers, carefully depress the retaining tabs on the end of the brake fluid level sensor (1) and
press the sensor through the reservoir to remove.