Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0568 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the cruise control switch.
  2. Ignition ON, cruise control switch ON, observe the scan tool Cruise Set/Coast Switch parameter.
    • If the scan tool parameter reads Inactive or Off, replace the cruise control switch assembly.
    • If the scan tool parameter reads On, Active or Invalid, test the cruise control switch signal circuit for a short to voltage. If the circuit tests normal, replace the ECM/PCM.
scientia non olet · About Mike's Workshop Manuals