Diagnostic Test

CHECK WIRING AND CONNECTORS FOR INTERMITTENT OPERATION
1. Using the schematics as a guide, check the Powertrain Control Module (PCM) terminals for corrosion, damage or terminal push out. Pay particular attention to all power and ground circuits.
2. Wiggle the wires while checking for shorted and open circuits.
3. Check for Service Bulletins that may apply.
  Were any problems found?
  
  Yes
  - Repair the power and/or ground circuits to the PCM and Transmission Control Relay or TIPM (if equipped) as necessary.
  - Perform the 65RFE TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .
  No
  - Replace the PCM in accordance with the Service Information. With the scan tool, perform a Quick Learn. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the 65RFE TRANSMISSION VERIFICATION TEST. Refer to 65RFE TRANSMISSION VERIFICATION TEST .