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Home >> GMC >> 2002 >> Yukon Denali >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information & Procedures >> DTC P0568: Set/Coast Switch ON For Longer Than 90 Seconds >> Diagnostic Aids

Diagnostic Aids

NOTE:
  • Remove any debris from the TAC module connector surfaces before servicing the TAC module. Inspect the TAC module connector gaskets when diagnosing/replacing the module. Ensure that the gaskets are installed correctly.
  • For any test that requires probing the PCM or a component harness connector, use a connector test adapter. Using a connector test adapter prevents damage to the harness/component terminals. Refer to USING CONNECTOR TEST ADAPTERS in Wiring Systems.
  • Inspect for a set/coast switch stuck in the engaged position or the signal circuit is shorted to voltage.
  • For an intermittent, refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.
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