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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 23 (DISC BRAKES)SYSTEM TESTSBRAKE SYSTEM VEHICLE ROAD TESTROAD TESTING PROCEDURE
2004 Oldsmobile Bravada RWD

Road Testing Procedure

2004 Oldsmobile Bravada RWDSECTION Road Testing Procedure
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.
WARNING: Road test a vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
  1. Start the engine and allow it to idle.
  2. Check to see if the brake system warning lamp remains illuminated.
  3. If the brake system warning lamp remains illuminated, DO NOT proceed to test drive the vehicle until it is diagnosed and repaired. See GENERAL DIAGNOSIS  under TROUBLESHOOTING.
  4. Select a smooth, dry, clean and level road or large lot that is as free of traffic and obstacles as possible for brake system low speed road testing.
  5. With the transmission in PARK, lightly apply the brake pedal. Observe both the pedal feel and the pedal travel.
  6. If the brake pedal apply felt spongy, or the pedal travel was excessive. DO NOT drive the vehicle until it is repaired.
  7. If the brake pedal apply did not feel spongy and the pedal travel was not excessive, proceed to next step.
  8. Release and apply the brakes.
  9. While continuing to apply the brakes, shift the transmission into DRIVE, release the brakes and allow the engine to idle the vehicle away from the stopped position. Observe for a slow release of the brake system.
  10. With the aid of an assistant to observe the vehicle's performance from outside of the vehicle, drive the vehicle at a low speed and lightly apply the brakes while driving past the assistant. Have the assistant observe for brake system noise from the side of the vehicle closest to them, while you observe both the pedal effort and the pedal travel.
  11. If the brake pedal apply effort was excessive, or the pedal travel was excessive. DO NOT continue to test drive the vehicle until it is repaired.
  12. If the brake pedal apply effort was not excessive and the pedal travel was not excessive, proceed to next step.
  13. Drive the vehicle in the opposite direction, at the same low speed and lightly apply the brakes while driving past the assistant. Have the assistant observe for brake system noise from the side of the vehicle closest to him.
  14. Drive the vehicle at a low speed and shift the transmission into NEUTRAL without applying the brakes. Observe for a rapid deceleration in vehicle speed, indicating possible brake drag.
  15. Select a smooth, dry, clean and level road that is as free of heavy traffic as possible for brake system moderate speed road testing.
  16. Drive the vehicle at a moderate speed. Observe for a pull and/or incorrect tracking of the vehicle without the brakes applied.
  17. While continuing to drive the vehicle at a moderate speed, perform several light applies of the brakes. Observe the pedal effort and the pedal travel, observe for brake system noise, pulsation and/or brake drag.
  18. If the brake pedal apply effort was excessive, or the pedal travel was excessive. DO NOT continue to test drive the vehicle until it is repaired.
  19. If the brake pedal apply effort was not excessive and the pedal travel was not excessive, proceed to next step.
  20. While continuing to drive the vehicle at a moderate speed, perform several moderate applies of the brakes. Observe the pedal effort and the pedal travel, observe for brake system pulsation and/or uneven braking action, either side to side, or front to rear. A small amount of vehicle front end dip is expected during a moderate apply of the brakes.
  21. If the brake pedal apply effort was excessive, or the pedal travel was excessive. DO NOT continue to test drive the vehicle until it is repaired.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.