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Home >> GMC >> 2014 >> Terrain SLT, 4D Utility >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Data Communication System) >> Diagnostic Information and Procedures >> DTC U2101 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2010 GMC Terrain and 2010 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the appropriate DTC is not set.
    • If the DTC is set along with other codes, diagnose all other codes first. If no other codes are set, program the control module specified by the DTC descriptor.
  2. With a scan tool, clear the DTCs.
  3. Ignition OFF, remove the scan tool, open and close the drivers door.
  4. Wait 60 seconds, then verify the DTC is not set.
    • If the DTC is set, replace the appropriate control module.
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