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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1149 (Engine Controls And Fuel - 3.6L - DTC P0496 To DTC P2235) >> DTC P0601-P0604, P0606, P062B, P0167D, P2107, or P2610 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the DTC information with a scan tool. DTC P0602 or P0606 should not set.
    • If DTC P0602 failed this ignition, program the ECM. If the DTC resets, replace the ECM.
    • If DTC P0606 failed this ignition, clear the DTCs with a scan tool and verify the DTC does not reset. If DTC resets, replace the ECM.
  2. Observe the DTC information with a scan tool. DTC P0601, P0603, P0604, P062B, P167D or P2610 should not set.
    • If a DTC failed this ignition, replace the ECM.
  3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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