H3 V8-5.3L (2008)
2. Inspect the master cylinder reservoir cap diaphragm and the reservoir-to-master cylinder grommets for swelling, indicating brake fluid
contamination.
3. If the brake fluid WAS contaminated with an oil-based or a silicone-based substance, indicated by fluid separation and/or a swollen master
cylinder reservoir cap diaphragm and/or swollen reservoir-to-master cylinder grommets, perform the following:
1. Remove ALL of the following components listed from the vehicle. Each component contains internal rubber seals/linings which have been
contaminated by the contaminated brake fluid in the brake hydraulic system.
Refer to the procedures indicated:
*
Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (LHD) (See: Brake Master Cylinder/Service
and Repair/Removal and Replacement/Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (LHD)
)Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (RHD) (See: Brake Master Cylinder/Service
and Repair/Removal and Replacement/Brake Master Cylinder with Power Brake Booster and Chassis Control Module Replacement (RHD)
)
*
Front Brake Hose Replacement (See: Brake Hose/Line/Service and Repair/Front Brake Hose Replacement)
*
Rear Brake Hose Replacement (See: Brake Hose/Line/Service and Repair/Rear Brake Hose Replacement)
*
Front Brake Caliper Replacement (See: Brake Caliper/Service and Repair/Removal and Replacement/Front Brake Caliper Replacement)
*
Rear Brake Caliper Replacement (See: Brake Caliper/Service and Repair/Removal and Replacement/Rear Brake Caliper Replacement)
2. Clean out all the hydraulic brake pipes using denatured alcohol, or equivalent.
3. Dry the brake pipes using non-lubricated, filtered air.
4. Repair or replace ALL of the following components listed and install them to the vehicle. Each component contains internal rubber
seals/linings which have been contaminated by the contaminated brake fluid in the brake hydraulic system.
Refer to the procedures indicated:
*
Clean the brake master cylinder reservoir using denatured alcohol, or equivalent, then dry the reservoir using non-lubricated, filtered air.
Inspect the reservoir for cracks and/or damage and replace if necessary. Refer to Master Cylinder Reservoir Replacement (See: Brake
Master Cylinder/Service and Repair/Removal and Replacement/Master Cylinder Reservoir Replacement) .
Replace the brake master cylinder reservoir cap.
*
Front Brake Hose Replacement (See: Brake Hose/Line/Service and Repair/Front Brake Hose Replacement)
*
Rear Brake Hose Replacement (See: Brake Hose/Line/Service and Repair/Rear Brake Hose Replacement)
*
Front Brake Caliper Overhaul (with RPO BRM) (See: Brake Caliper/Service and Repair/Overhaul/Front Brake Caliper Overhaul (with
RPO BRM))Front Brake Caliper Overhaul (without RPO BRM) (See: Brake Caliper/Service and Repair/Overhaul/Front Brake Caliper
Overhaul (without RPO BRM)) or Front Brake Caliper Replacement (See: Brake Caliper/Service and Repair/Removal and
Replacement/Front Brake Caliper Replacement)
*
Rear Brake Caliper Overhaul (with RPO BRM) (See: Brake Caliper/Service and Repair/Overhaul/Rear Brake Caliper Overhaul (with
RPO BRM))Rear Brake Caliper Overhaul (without RPO BRM) (See: Brake Caliper/Service and Repair/Overhaul/Rear Brake Caliper
Overhaul (without RPO BRM)) or Rear Brake Caliper Replacement (See: Brake Caliper/Service and Repair/Removal and
Replacement/Rear Brake Caliper Replacement)
*
HBCi components
4. If the brake fluid was NOT contaminated with an oil-based or a silicone-based substance, but WAS contaminated with water or dirt, rust,
corrosion, and/or brake dust, replace the brake master cylinder reservoir cap which may have allowed the moisture or particles to enter the
hydraulic system.
5. Fill the brake master cylinder reservoir to the maximum-fill level with brake and clutch fluid Super DOT-4, GM P/N 88958860 (Canadian P/N
88901244) or equivalent DOT-4 brake fluid from a clean, sealed brake fluid container.
6. Pressure bleed the hydraulic brake system. Begin the procedure with the pressure bleeder reservoir filled to the maximum-fill level with the correct
brake fluid as indicated. Refer to Hydraulic Brake System Bleeding (Manual without RPO BRM) (See: Hydraulic Brake System Bleeding
(Manual without RPO BRM))Hydraulic Brake System Bleeding (Manual with RPO BRM) (See: Hydraulic Brake System Bleeding (Manual with
RPO BRM))Hydraulic Brake System Bleeding (Pressure without RPO BRM) (See: Hydraulic Brake System Bleeding (Pressure without RPO
BRM))Hydraulic Brake System Bleeding (Pressure with RPO BRM) (See: Hydraulic Brake System Bleeding (Pressure with RPO BRM)) .
