Park Brake and Automatic Transmission PARK (P) Mechanism Check

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: When performing this check, the vehicle could begin to move. You or others could be injured and property could be damaged. Make sure there is room in front of the vehicle in case the vehicle begins to roll. Be ready to apply the regular brake at once, should the vehicle begin to move.

Follow this procedure to test the park brake and automatic transmission PARK mechanism:

Park on a fairly steep hill, with the vehicle facing downhill.
Keep your foot on the hydraulic brake pedal.
Set the park brake.
Check the park brake:
1. Start the engine.
2. Place the transmission in NEUTRAL.
3. Slowly remove foot pressure from the regular brake pedal. If the vehicle moves, refer to Park Brake Adjustment in Park Brake.
In order to check the PARK (P) mechanism of an automatic transmission, follow steps 1-3 above then do the following:
1. Shift to PARK (P).
2. Release all brakes.