fog lights will not work

1998 GMC JIMMY
154,400 MILES • 4.3L • V6 • 2WD
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ROYCAR71
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I Changed the fog light switch, I checked the fuse and relay under the hood, and check voltage in the wiring. All checked fine. Is there another fuse or relay that relates to the fog light to be checked? Thank you.
Jul 18, 2015 at 9:32 PM
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HMAC300
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check the DRL relay then have it scanned for codes may be a body module problem
Jul 19, 2015 at 4:25 PM
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ROYCAR71
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Scanned for codes and checked relays. No codes, DRL relay works after swapping with go relay. How do i go about to check body control module for fault? Thanks.
Nov 13, 2015 at 10:49 PM
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HMAC300
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my reply said to have it scanned a pro has to do it with a pro scanner auto parts can't
Nov 14, 2015 at 6:48 AM
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ROYCAR71
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Before i go to get it scanned. Would I also have something else that was acting up since this function may be related to other functions?
Nov 14, 2015 at 5:59 PM
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HMAC300
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if the relay works and fog lights don't I assume they aren't getting power which comes from truck control module. it's either that or a fuse box problem like losing contact at relay or something broken in fuse box. you can try tweeking prongs on relay and using dielectric compound on them see if that works.
Nov 15, 2015 at 8:18 AM
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ROYCAR71
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It's been a while. Found that 10A "Park LP" fuse on/inside fuse box was blown. Fog light work.
Jun 12, 2017 at 4:07 AM
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STRAILER
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Good to hear, please use 2CarPros anytime we are here to help.

Cheers, Ken
Jun 14, 2017 at 10:33 AM