Pinpoint Test B : Brake Transmission Shift Interlock Override Switch: Notes

Brake Transmission Shift Interlock Override Switch 

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 will flash indicating the transmission is in Neutral Hold for towing purposes.

Possible Sources 

• Connectors damaged or pushed-out terminals, circuitry open, shorted to power or shorted to ground
• Brake transmission shift interlock override switch
• GSM
• BCM fuse 12 (5A)