DRL lights not working

BADGERONE

MEMBER
2003 HUMMER H3
6.0L
V8
4WD
AUTOMATIC
101,000 MILES

Fuse is okay. Installed new bulbs.

Sunday, January 13th, 2019 AT 6:10 PM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

Hello,

There is a parking lamp relay that needs to be checked. here is a guide to help you and the location of the relay. Also the wiring diagrams for the fog lights which they call clearance lamps so you can see how the system works.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

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

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Monday, January 14th, 2019 AT 12:49 PM

BADGERONE

MEMBER
1 POST

Hello Ken, I found out that the DRL lights work with light switch in the auto setting and the transmission in drive, but the lights still does not come on. Gerry V.

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Tuesday, January 15th, 2019 AT 10:52 AM

KEN L

MASTER CERTIFIED MECHANIC
47,536 POSTS

If the relay is okay is sounds like the BCM has gone bad. I would try a used or rebuilt unit to see what happens. Here is its location. Check out the diagrams (below). Please let us know what happens.

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