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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Engine Controls And Fuel - 1.5L (LYX) - Diagnostic Information And Procedures (P0351 - P26C8) And Symptoms) >> Diagnostic Information And Procedures >> DTC P0601, P0602, P0603, P0604, P0606, P062B, P062F, P0630, P16F3, Or P262B: Control Module Performance >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition On.
  2. Verify DTC P0602 or P0630 is not set.
    • If any of the DTCs are set 
    1. Program the K20 Engine Control Module. Refer to Control Module References .
    2. Verify DTC P0602 or P0630 is not set.
      • If any of the DTCs are set, replace the K20 Engine Control Module.
      • If none of the DTCs are set
    3. All OK.
    • Go to next step: If none of the DTCs are set 
  3. Verify DTC P0601, P0603, P0604, P0606, P062B, P062F, P16F3, or P262B is not set.
    • If any of the DTCs are set 

      Replace the K20 Engine Control Module.

    • Go to next step: If none of the DTCs are set 
  4. All OK.
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