The drivers side DRL doesn't come on. Bulb replaced, nothing. When I use the key fob (keyless entry) sometimes it winks with both eyes but usually just one.

I did notice a one of the left rear blinkers out, could this affect the DRL's?

Any ideas?

 

Yes I think so. if not make sure you pushed the bulbs all the way in. I had the same problem and realized i hadnt pushed the bulbs all the way in.

 

I've noticed that the fullsize gm drls always go out prematurely. A friend of mine had the dealer give him a handful of replacement bulbs before he bought his Tahoe. I'm doing the DRL > Turn Signal conversion to bypass that problem. Do a search for it... it's gaining popularity quick.