K 1500 Truck 4WD V8-5.7L VIN R (1997)
Hydraulic Brake Booster: Description and Operation
Booster Assembly
Hydraulic Booster Assembly
Some models use a hydraulic booster to provide power assist. The hydraulic booster uses fluid pressure from the power steering pump to provide the
power assist. The booster assembly is located on the left front cowl and serves as the mounting surface for the master cylinder. Identification
information is stamped into the housing, near the inlet valve.