With all Wiring interfaces (such as the GM13SR), it is necessary to introduce the interface to a vehicle that is in an in-active (resting) state. The following procedure should ensure proper functioning of the GM interface (In sequential order).
- Disconnect the GM interface from the vehicle
- Close all doors, turn off all lights, remove the keys from ignition
- Wait 60 seconds (while inside the vehicle)
- Connect the GM Interface to vehicle
- Start the vehicle
- Test for proper functionality