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Home >> Chevrolet >> 2014 >> Spark LS, Standard Trans >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - AISIN 80-40LE >> Diagnostic Information and Procedures >> DTC P0601, P0602, P0604, or P062F: Control Module Memory >> Circuit/System Verification

Circuit/System Verification

  1. Ignition ON, observe the DTC information with a scan tool. Verify that DTC P0602 does not fail this ignition cycle.
    • If DTC P0602 failed this ignition, reprogram the K71 TCM. Refer to Control Module References . If DTC P0602 resets, replace the K71 TCM.
  2. Observe the DTC information with a scan tool. Verify that DTCs P0601, P0604, and P062F do not set this ignition cycle.
    • If any of the DTCs P0601, P0604, or P062F are set this ignition cycle, replace the K71 TCM.
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