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Tahoe / Yukon Service Manual

Symptoms - Hydraulic Brakes

  1. Perform the Brake System Vehicle Road Test before using the hydraulic brake symptom tables in order to duplicate the customers concern.
  2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following: Hydraulic Brake System Description and Operation Brake Assist System Description and Operation ABS Description and Operation Visual/Physical Inspection Inspect for aftermarket devices which could affect the operation of the hydraulic brake system. Checking Aftermarket Accessories Inspect the easily accessible or visible system components, for obvious damage or conditions, which could cause the symptom. Intermittent Faulty electrical connections or wiring may be the cause of intermittent conditions. Testing for Intermittent Conditions and Poor Connections Symptom List Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom: Brake Warning Indicator Malfunction Brake Pulsation Brake System Noise Braking Action Uneven - Pulls to One Side Braking Action Uneven - Front to Rear Brake Pedal Excessive Effort Brakes Drag Brake System Slow Release Brake Fluid Loss