Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi! Welcome to JustAnswer. Thanks for coming! I'm Ron Z and I'll be helping you with your question today. Please give me a moment to review your question and prepare your answer. Be right back...
Thanks for holding!
I have a procedure to program the garage door opener that you can try. I've wrapped it into a PDF file for easier viewing/printing. Download the PDF file here: https://goo.gl/ZXoDp1
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My apologies for the delay... I was Offline when your reply came though...
Unfortunately, this was the only programming procedure I could find for this vehicle. I will opt-out and re-open your question to other Techs. Maybe someone has a different method you can try!
Sorry the other expert could not help you. try this link and let me know if it works for you.
You do need to figure out if you have a rolling code transmitter or not. Most newer door openers since 1990 are rolling code transmitters.
That is very possible your Avalanche does not have that option