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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 67 (Automatic Transaxle - 4T65-E - DTC P0218 To DTC P2534) >> DTC P0601, P0602, P0603, P0604, or P062F >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
  1. Start the engine. 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. DTC P0601, P0603, P0604, and P062F should not set.
    • If a DTC resets, replace the TCM.
  5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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