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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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2009 Tahoe. 140,000 miles. 4 things happened at the same

Customer Question

2009 Tahoe. 140,000 miles. 4 things happened at the same time. 1) Rear view mirror backup screen stopped working. 2) Digital compass in dash stopped working. Just shows a dash (-). 3) Sun visor vanity mirror lights stopped working. 4) Suddenly unable to turn on dome/passenger lights individually with button at each light. I can turn them all on at the same time from the knob at left of steering wheel on dash. Been this way for 6 months. I’m just living with it for now.
Submitted: 7 months ago.
Category: Chevy
Expert:  chevygeorge replied 7 months ago.

Hello, My name is ***** ***** I'm here to assist you today. I'm sorry you're having these issues. Please give me a moment while I pull up the documents and investigate.

Expert:  chevygeorge replied 7 months ago.

Are the dome lights working normally when the doors are opened?

Expert:  chevygeorge replied 7 months ago.

I work on these daily, but remind me, the individual dome lights are in the overhead console correct,or on the mirror?

Customer: replied 7 months ago.
dome lights work fine when doors are opened.
Customer: replied 7 months ago.
Dome lights are everywhere. Front, center, back center and over rear passanger doors.
Customer: replied 7 months ago.
not on mirror
Expert:  chevygeorge replied 7 months ago.

The buttons to activate the individual lights are on the console. Okay, the lights are controlled by the BCM. There are 2 fuses to check in the instrument panel fuse block. CTSY fuse 15 amp and IP LPS 10 amp.

https://www.dropbox.com/s/p209xyaydnmga5q/fuses.pdf?dl=0

Expert:  chevygeorge replied 7 months ago.

I'm not seeing a lot in common with the lighting and camera besides the BCM. Are your reverse lights working(to activate the camera). Here's something to check on the mirror.

https://www.dropbox.com/s/7hmeky7uw83t5bs/mirrorconn.pdf?dl=0

Expert:  chevygeorge replied 7 months ago.

Another thing to look at on the compass issue.

https://www.dropbox.com/s/j2zxp4z2580crym/compass.pdf?dl=0

Customer: replied 7 months ago.
Can't view your links. What it this dropbox thing and why won't the PDFs open?
Expert:  chevygeorge replied 7 months ago.

I'm not coming up with a good strategy for attack without just checking multiple random things. I think the best course of action would to get the vehicle a full diagnostic scan. There should be BCM and Compass communication codes that would lead us in a direction. Without out those were just running in the dark.

Dropbox is a file sharing site. Your may need a simple sign up to view. It seems to be the most popular way to share (possibly) copyrighted material here.

Expert:  chevygeorge replied 7 months ago.

It's a google service, so it's trusted.