Intermittent Fault
- Ignition off.
Check the transmission control module (TCM) and speed sensor connectors for contact resistance and oxidation according to CONTACT RESISTANCE AND OXIDATION .
Check the power supply cable between transmission control module (TCM) terminal A59 and transmission connector terminal 16 for an intermittent open-circuit according to OPEN-CIRCUIT, INTERMITTENT FAULTS .
Check the signal cable between transmission control module (TCM) terminal A41 and transmission connector terminal 19 for an intermittent open-circuit according to OPEN-CIRCUIT, INTERMITTENT FAULTS .
Remedy as necessary.
Other information:
- To connect the breakout box, see CONNECTING THE BREAKOUT BOX .
- To disconnect the transmission control module (TCM), see TRANSMISSION CONTROL MODULE (TCM), REPLACING .
- To disconnect transmission connector, see CONNECTING THE BREAKOUT BOX, GM AUTOMATIC TRANSMISSIONS .
- For information about signals, see SIGNAL SPECIFICATION .
- For information about signals to the transmission connector, see SIGNAL DESCRIPTION. CONNECTOR 4T65 EV/EV-GT .
- Continue
Refer to INFORMATION