Harness or Connector Intermittents
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
Many intermittent open or shorted circuits come and go with harness or connector movement caused by the following type conditions:
- Vibration.
- Engine torque.
- Bumps or rough pavement.
Test for intermittents by performing the applicable procedure from the following list:
- Move related connectors and wiring while monitoring the appropriate scan tool data.
- Move related connectors and wiring with the component commanded ON and OFF, with the scan tool. Observe the component operation.
- With the engine running, move related connectors and wiring while monitoring engine operation.
Verify whether the harness or connector movement affects any of the following systems:
- Data displayed.
- Component or system operation.
- Engine operation.
Repair the components as necessary.