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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 P2534 >> Circuit/System Testing

Circuit/System Testing

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  1. Remove the TRANS fuse. Inspect the fuse for an open.
    • If the fuse is open, test the ignition 1 voltage circuit for a short to ground.
  2. Disconnect the TCM connector. Turn ON the ignition, with the engine OFF. Using the J 35616  GM terminal test kit, measure the voltage at the ignition 1 voltage circuit. The voltage should be near battery voltage.
    • If the voltage is below the specified value, test the ignition 1 voltage circuit for an open or high resistance.
  3. If all circuits and connections test normal, replace the TCM.
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