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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1322 (Hydraulic Brake System) >> Diagnostic Information and Procedures >> Brake Warning Indicator Malfunction >> Component Testing >> Park Brake Switch Malfunction

Park Brake Switch Malfunction

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the park brake switch.
  2. Test for infinite resistance between the signal terminal A and ground with the park brake released.
    • If less than the specified value, replace the park brake switch.
  3. Test for less than 1 ohm between the signal terminal A and ground with the park brake applied.
    • If greater than the specified range, replace the park brake switch.
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