Pinpoint Test B : Brake Transmission Shift Interlock Override Switch: Notes
WARNING: This page is about a different variant/trim than selected.
Refer to TRANSMISSION CONTROLS - 6F50/6F55 for schematic and connector information.
Normal Operation and Fault Conditions
The BCM provides battery power to the GSM. The brake transmission shift interlock override switch receives power from the GSM. When the brake transmission shift interlock override switch is held the GSM flashes indicating the vehicle is in Neutral Hold for towing purpose.
Possible Sources
- Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
- Brake transmission shift interlock override switch
- BCM fuse 15 (7.5A)
- GSM