Parking lights stay on intermittently?

MCKARAOKEFL

MEMBER
2007 CHEVROLET UPLANDER
3.9L
V6
2WD
AUTOMATIC
128,000 MILES

After removing the key and leaving the vehicle I've noticed that my parking lights are on and I walked around the front so where the front lights so the parking lights are remaining on after shutting the engine off not all the time and sometimes they come back on went left alone draining the battery.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,913 POSTS

From what you have described it sounds like the BCM is going out. There is a running light control relay that we might try swapping out first though, here is the location of the relay. Also, I have included the running light wiring diagrams and a guide to help you read them so you can see how the system works.

https://www.2carpros.com/articles/understanding-automotive-wiring-diagrams-a-step-by-step-guide-for-beginners

To confirm the issue, we should do a CAN scan to see if any codes are stored. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

Here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

I have also included how to change the BCM out, you can get a preprogrammed unit by searching Google or Ebay. Check out the images (below). Please upload pictures or videos of the problem so we can see what's going on.

Images (Click to make bigger)