Checking wiring and sensors
- Ignition off
- Connect the breakout box to the transmission
- Disconnect the control module
- Disconnect the transmission connector
- Connect adapter
9511505
and breakout box
9813190
to the transmission connector (control module side).
Check the wiring between control module terminals #59 (#A59) and #41 (#A41) and transmission connector terminals #S (#A16) and #V (#A19). Check for a short-circuit to each other.
Check the power supply cable between control module terminal #59 (#A59) and transmission connector terminal #S (#A16). Check for a short-circuit to supply voltage.
Check the signal cable between control module terminal #41 (#A41) and transmission connector terminal #V (#A19). Check for a short-circuit to supply voltage.
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 connect the breakout box to the 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
- See Checking wiring and terminals
Was a fault detected in the cables or terminals?
- YES
Refer to Verification
- NO
Refer to Checking the control module