Hydraulic Brake System
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Brake System Vehicle Road Test before using the brake symptom tables in order to duplicate the customer's concern. See BRAKE SYSTEM VEHICLE ROAD TEST . Review the system description and operation in order to familiarize yourself with the system functions. See DESCRIPTION & OPERATION .
Inspect for aftermarket devices which could affect the operation of the hydraulic brake system. See CHECKING AFTERMARKET ACCESSORIES . Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. Inspect the brake fluid reservoir for the proper brake fluid level. Faulty electrical connections or wiring may be the cause of intermittent conditions.