Sierra Classic 1500 4WD V8-6.0L (2007)
23. Important: If the brake system warning lamp remains illuminated, DO NOT allow the vehicle to be driven until it is diagnosed and repaired.
If the brake system warning lamp remains illuminated, refer to Symptoms - Hydraulic Brakes. See: Brakes and Traction Control/Hydraulic
System/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms - Hydraulic Brakes