Intermittent fault
Check the wiring between control module terminal A52 and automatic transmission connector terminal C (#A3). Check the wiring between control module terminal A70 (#B10) and automatic transmission connector terminal D (#A4) for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .
Remedy as necessary.
Other information:
- To disconnect control module, see Transmission control module (TCM), replacing .
- To connect the breakout box to the transmission connector, see Connecting the breakout box, GM automatic transmissions .
- To connect the breakout box, see Connecting the breakout box .
- For information about signals, see Signal specification .
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Refer to Information