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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1416 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0571 >> Component Testing
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Component Testing

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 stop lamp switch.
  2. With the brake pedal released, test for infinite resistance between terminal A and terminal B stop lamp switch.
    • If not the specified value, replace the stop lamp switch.
  3. With the brake pedal released, test for less than 1.0 ohm between terminal C and terminal D at the stop lamp switch.
    • If not the specified value, replace the stop lamp switch.
  4. With the brake pedal applied, test for less than 1.0 ohm between terminal A and terminal B at the stop lamp switch.
    • If not the specified value, replace the stop lamp switch.
  5. With the brake pedal applied, test for infinite resistance between terminal C and terminal D at the stop lamp switch.
    • If not the specified value, replace the stop lamp switch.
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