I purchased a replacement mirror for my 2003 Tahoe Lt. Does anyone know how to take the old mirror off after the mirror is unplugged?

I could not find any manuals, but I think I found a pic that may help.
You can see the center part I circled, it looks like you take a small flat head screwdriver and slightly pry on it so get that off, the two side circled areas look like they just let the housing slide off when pulled on.
Once that housing is off you should be able to see a screw, loosen that and you should be able to slide the mirror off.
Hopefully that helps, if not I am sure somebody can find actual instructions from a manual.

I have it installed, but the compass and temp still do NOT work. any ideas. the airbag message is working. im so confused. any help would be greatly appreciated. is there a reset button

You're welcome.
As for why it is not working, was the old one working partially, or did it have the exact same issues as this one?
If the issues are the same there may be a wiring issue, possibly a short.

Also, is this one brand new, or one you got from a salvage yard?

I purchased the new one on ebay as used but tested as working. I have the exact same issue. Ill keep trying, thank you for your time and advice. If you hear anything please let me know.

If you have the exact same issue that leads me to believe there is a short in the wires, or wiring connector, look over the connector that plugs into the mirror, maybe give each wire a slight wiggle and see if anything changes.
If nothing changes you are going to need a wiring diagram to try to figure out which wire(*) to chase down/test.

I will look for a wiring diagram to run down the problem. Thank you

I did some research, and others have had your same issue, they mention taking it to a dealer, and that the dealer said it was the fuse block under the hood, or connections.
"They reset the connections to the main fuse block harness and it all came back on. They said if it happens again, the main fuse block has to be replaced."

Before checking that I'd look over your manual and see if the mirror has a fuse listed for it.


One person mentioned the instrument panel fuse block, they had wires coming lose from it, apparently they pressed on them to get them back in all the way.
I am guessing they mean the wires where they go into the backside of the instrument panel.

Another mentions the solder joints on the mirrors PCB board, the ones that the connector plugs into, I am doubtful that is your issue, unless somehow both mirrors are bad.
Here is a video where the guy fixed his solder joints, again I am doubtful this is your problem, I'd find out which wires going to the mirror are supposed to have power, and verify they have power with the key on.

This is mentioned about the 03' Silverado with the same issues, I believe they have the same mirror.
"This concern may be caused by the 15 Amp Air Bag Fuse open. Reports from the field have shown in some cases circuit 1139 Yellow may be shorted to ground at the Left I/P Junction Block mounting bracket"
""Recommendation/Instructions:
To correct the concern repair the wiring as necessary and insulate harness and mounting bracket with foam tape to prevent a re-occurrence""

Another mentions the air bag fuse, not sure that would be the culprit, but sharing the info just in case.
"I have seen some people pull the air bag fuse and it goes away also."
I am not positive, but I believe that fuse is under the hood, a 15 amp fuse in the under-hood fuse block to be exact, check to see if it has blown.

Thank you, I did check the fuse, and it is at the dealer as we speak, I saw that about the fuse block, sort of odd for such a small component.

Very welcome, make sure they totally explain what the issue was to you, that way you can possibly fix it without their help in the future.
Please let us know how it turns out, wishing you luck on a cheap fix, then again cheap and dealer do not usually go hand in hand unfortunately..