thetahoe

I've searched but all I found were either answers to '96-99 Tahoes, or posts about DRL's that went unanswered. I keep thinking I already posted a thread on this but I can't find it, so I'll go ahead and ask.

The DRL's on our 2002 Tahoe do not work, I can't seem to find what the problem is. The bulbs are new, the fuse is not blown. I don't know where the relay box is so that might be the problem, I also don't know how to tell if that is the case.

Any info?

Thanks
-Zach

in2pro

Try starting the vehicle and make sure the parking brake is off?

charlie pachanga

Check the DRL relay. It is in the fuse compartment under the hood. It is powered by 2 fuses. The DRL relay gets its turn on comand from the BCM.

thetahoe

In2pro, parking brake is off. In fact I don't think we've used it yet.

Charlie, thanks I will look for it. Is it labeled on the diagram on the cover of the fuse box?

thetahoe

Found the relay and swapped it with the horn's relay [had same numbers on top and same number of prongs]. The horn still worked, meaning that the DRL relay was not faulty, however the DRL's still did not work.

in2pro

My nieces 03 Suburban had the same issue I replaced the bulbs and never could figure it out why the didnt work.
next time I saw her vehicle they were working but it was running, she didnt have anything done to it other then I never tried fully starting the vehicle when I was troubleshooting.

in2pro

try putting the truck in gear...