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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1645 (Engine Control System & Fuel System - 4.8L, 5.3L, 6.0L, 6.2L - DTC P0300 To DTC P1175) >> DTC P0601, P0602, P0603, P0604, P0606, P0607, P060D, P062F, or P2610 (ECM, Without L96) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, clear the DTC information with a scan tool. Observe the scan tool DTC information.
    • If DTC P0602 is set, reprogram the K20 ECM. Refer to Control Module References for K20 ECM replacement, setup, and programming.
    • If DTC P0602 resets, replace the K20 ECM.
  2. Observe the DTC information with a scan tool. Verify that DTC P0601, P0603, P0604, P0605, P0606, P0607, P060D, P062F, or P2610 does not set.
    • If a DTC failed this ignition, replace the K20 ECM.
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