2008 Chevrolet Suburban 1500 Brake Service (ONLINE REPAIR MANUALS)

Certain general service procedures apply, regardless of whether the brakes are vacuum or hydraulically assisted. Only top quality, clean brake fluid should be used. More seals and valves are used with power brake systems than with ordinary brakes, so an inferior brake fluid will do much more damage. For the same reason, ensure all dirt is kept out of the system. Additionally, on models with hydraulic assist brakes, care must be taken not to mix the fluids of the booster hydraulic system and brake hydraulic system as the fluids are not compatible.

If the power unit fails, the brak...

Height Sensing Proportioning Valve

The height sensing proportioning valve must be adjusted whenever the valve and/or linkage is disassembled or removed for service. In addition, adjustment should be inspected if excessive front wheel lock-up is experienced with a lower than desired brake application rate when vehicle is at or near maximum GVWR.

• Raise and support vehicle, leave wheels on and allow axle to hang freely.
• Remove lever retaining nut and disconnect lever from valve shaft, Fig. .
• Rotate valve shaft to permit installation of correct adjustment gauge, Fig. , ensure D shaped hol...

Acadia, Enclave & Outlook

• Apply park brake, then with engine off, apply and release brake pedal several times until brake pedal becomes firm to deplete vacuum reserve in vacuum brake booster.
• Remove air cleaner assembly.
• Disconnect master cylinder fluid level sensor electrical connector.
• Remove vacuum brake booster check valve and hose assembly from vacuum brake booster and position aside.
• Remove vacuum brake booster vacuum sensor and position aside.
• Release front and rear brake pipes from routing clip on frame rail.
• Remove Brake Pressure Modulator Valve (BPMV) assembly mount...

The Bosch ABS/EBD/TCS/VSES system consists of the following vehicle performance enhancement systems: Anti-Lock Brake System (ABS); Bi-State Engine Mount (BSM); Electronic Brake Distribution (EBD); Traction Control System (TCS); Variable Effort Steering (VES); Vehicle Stability Enhancement System (VSES). The Electronic Brake Control Module (EBCM) and the Brake Pressure Modulator Valve (BPMV) is serviced separately. The BPMV uses a 4 circuit configuration to control hydraulic pressure to each wheel independently.

When wheel slip is detected during a brake application, the ABS enters an...

Removal

• Siphon ^2/3 of the brake fluid from master cylinder.
• Raise and support vehicle.
• Remove tire and wheel assembly.
• Compress caliper pistons until they bottom in bores using suitable clamp, Fig. .
• Disconnect brake hose at caliper by removing inlet fitting bolt.
• Remove mounting bolts and caliper.

Inspection

Should it become required to remove the caliper for installation of new components, clean components in denatured alcohol, wipe dry using lint-free cloths. Blow out drilled passages and holes using compressed air. Inspect dust boots for punctures or tears. If punctures or tears are...

• Raise and support vehicle, then remove wheel and tire assemblies.
• Compress caliper pistons until they bottom in bores using suitable clamp.
• Remove calip...