Remote start locked in maintenance mode

2007 CHEVROLET TAHOE
74,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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MO-SAN
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I believe my remote start is stuck in maintenance mode or valet mode. When I hold down the lock bottom and remote start bottom, the horn will sound 3 times and won’t start. I have a total of 4 remote keys and only one works on remote start and the rest don’t. Locking and unlocking works fine on all remote as usual.
How do I get it out of this maintenance mode or is this something only the dealership could do?

A help to this will highly be appreciated.
Dec 19, 2020 at 3:38 PM
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DANNY L
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Hello, I'm Danny.

I've attached three picture below of what I've found so far on your trucks issue. I'll keep looking for more. Hope this this helps and thanks for using 2CarPros.
Dec 19, 2020 at 8:16 PM
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MO-SAN
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Thanks Danny! I will troubleshoot what you sent and see what I could find.
Again, thanks for the quick response.

Mo-san
Dec 20, 2020 at 3:24 AM
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DANNY L
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You're welcome!
Let us know what you find and we'll go from there. Thanks again for using 2CarPros.

Danny-
Dec 20, 2020 at 2:17 PM