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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Automatic Transmission - 4T65-E - DTC PO218 Through DTC P2534) >> DTC P0601-P0604 or P062F >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Engine running. Let the engine run for at least 1 minute.
  2. Ignition OFF for at least 30 seconds to allow for the complete shutdown of the TCM.
  3. Ignition ON, verify that DTC P0602 is not set.
    • If DTC P0602 is set, reprogram the TCM. If the DTC resets, replace the TCM.
  4. Observe the DTC information with a scan tool. If DTC P0601, P0603, P0604, or P062F are set, replace the TCM.
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