Key fob and wipers work intermittently

CHEVY2002TB

MEMBER
2002 CHEVROLET TRAILBLAZER
4.6L
6 CYL
4WD
AUTOMATIC
307,525 MILES

My six month old key fob is not working correctly. The original stopped working all together. Fob will intermittently work (10% good - 90% bad). Fob was programmed per instructions that came with unit it worked until last week. Also, my rear wipers are working intermittently (10% good - 90% bad). What module(s) controls these functions?How do I go about fixing these two issues? Thanks

Tuesday, November 21st, 2017 AT 3:31 PM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
52,185 POSTS

Hello,

This systems commingled at the BCM which I believe is going bad. But to be sure we should check the system fuses there are nine of them.

Here is a guide and some diagrams to help you see what is going on and to do a few easy tests to confirm the problem:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Below are the BCM wiring and fuse panel locations. If the BCM is bad when you replace it you will need a shop to program it for you.

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

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