Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
I'm trying to save you some time and aggravation. Like I said, these lights are computer controlled, and the only way to accurately diagnose this is by using a scan tool.
If it were a matter of checking a certain connector or a certain wire, you can be sure that I'd be happy to guide you in that direction. But the simple reality is that the quickest and surest path to diagnosis starts with a scan tool, so if you don't have one of those, you are very limited with what you are able to diagnose.
To put it another way..... if your car rolled into my shop with that complaint, the very first thing I would do (before checking fuses or opening the hood or anything else) is grab my scan tool and plug it in. That's how vital the scan tool is on the lighting systems of this car. Couple that with the fact that the BCM's are notoriously faulty in these cars, and it makes this a no brainer: have someone diagnose it for you.
Feel free to opt me out if you're unhappy with my advice, but rest assured that I am trying to shoot you straight on this.
Congratulations. I don't mind being told I got it wrong, I still stand by my own advice.
Contact JA for a refund, or better yet, I'll contact them for you.
IT WAS GOOD ADVICE. I JUST THINK YOU WERE A LITTLE CLOSEMINDED.