Questions & Answers for: GMC switch pcb Computers & Internet

...PCB wiper relays are soldered directly to circuit board inside the under hood fuse box. The windshield wiper/washer switch signal circuits are inputs to the body control module (BCM) and the BCM ...

switch is a low voltage input to the BCM - body control module . The BCM controls the wiper's by energizing two PCB relay's . These relay are non replaceable , soldered inside the under hood fuse box

...switch assembly and nearly all the signal circuit voltage will be dropped across the BCM resistors. The BCM controls the wiper motor through the WIPER CONTROL PCB Relay and the WIPER SPEED PCB Relay. ...

...switch signal. The BCM supplies voltage to the backup relay and to the automatic day/night mirror when the vehicle is in reverse. The backup relay supplies a voltage on the backup lamp supply voltage ...