Result:

p0568

Generic
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Cruise Control "Set" Signal

GM
Type:
    Powertrain - Vehicle Speed, Idle Control, and Auxiliary Inputs - ISO/SAE Controlled
Description:
    Cruise Control Set Circuit Conditions
Cause:
    Key on or engine running, then the PCM detected system voltage on the Set Switch signal circuit with the Cruise Switch off, or with Cruise Switch on, that the Set Switch was on for over 25 seconds • Verify Set/Coast Switch is not stuck in the on position

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