Window defogger, rear wiper, and rear window washer, do not function?

2002 CHEVROLET TRAILBLAZER

200,000 MILES • 4.2L • 6 CYL • 4WD • AUTOMATIC

AJCHWICK

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Items in the liftgate, ie Window defogger, rear wiper, and rear window washer, do not function. BCM issue? Or possibly wiring at the lift gate hinge area (ie Rubber Boot from auto to gate)? Thank you. Alan

Vehicle listed above is LTZ model.

Aug 12, 2022 at 1:59 PM

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I would first start by checking the LGM1 fuse in the rear fuse panel below the left rear seat, if okay there is a liftgate control module that runs all three, the BCM runs two out of the three. Here is the location of the module and how to replace it. Also, here is a guide on how to check the fuses and the fuse locations as well:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what happens.

Images (Click to enlarge)

Aug 12, 2022 at 4:28 PM