How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask BOBBYSS Your Own Question
BOBBYSS, Master Technician
Category: Chevy
Satisfied Customers: 17084
Type Your Chevy Question Here...
BOBBYSS is online now
A new question is answered every 9 seconds

The compass & temp indicators on our 2002 tahoe rearview

Customer Question

The compass & temp indicators on our 2002 tahoe rearview mirror are working intermittently. Seems like a loose connection cause they work off and on. Got a fix?
JA: Have you checked all the fuses? Do you have a wiring diagram?
Customer: All fuses are good.
JA: What year is your Compass?
Customer: 2002
JA: Are you fixing your Compass yourself? What have you tried so far?
Customer: Checked fusses. Removed the wiring clip on the back, checked wires for loose and corrosion, then plugged it back in. No luck.
JA: Anything else you want the mechanic to know before I connect you?
Customer: How do I remove the Rear A/C control panel and headliner to check the connection to the rooftop sensor?
Submitted: 21 days ago.
Category: Chevy
Expert:  BOBBYSS replied 21 days ago.

Hello, my name is***** you tell me if the readings look like they reset every time or do they come right back in exactly the same?

Customer: replied 21 days ago.
The temp and compass readings are accurate each time they return.
Expert:  BOBBYSS replied 21 days ago.

Thank you. And is there any pattern as to how long they will stay out for or does it change all of the time?

Expert:  BOBBYSS replied 21 days ago.

I am unavailable for a call. I can help you here if you would like.

Customer: replied 21 days ago.
No. There is no consistency ti the outage intervals.
Expert:  BOBBYSS replied 21 days ago.

Thank you. The most common cause of this on your vehicle is a failure in the body control module. There is usually an internal short that causes this. It can also be the mirror itself as I have seen a few of these have an internal short but that is not as common. The only way to know for sure is to test the circuit going to the mirror. You need to see if it is losing voltage when this occurs. If it is then it is the BCM. If not then it is the mirror.

Customer: replied 21 days ago.
Expert:  BOBBYSS replied 21 days ago.

No problem. If you need anything else let me know.

Customer: replied 21 days ago.
Where is the BCM located?
Expert:  BOBBYSS replied 21 days ago.

It is located under the driver side of the dash just above the steering column.

Customer: replied 21 days ago.
Got it. THX.
Expert:  BOBBYSS replied 21 days ago.

Any time.