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Posted

I have a 2021 Silverado RST.  Living in MN, and my blower fan quits working then suddenly starts working after driving for a while.  Then the next day won't turn on at all no matter what settings you are calling for.  Any ideas before I run it into the Chevy shop?

Posted

There is a service bulletin for the HVAC that required a reprogram on my 2021 Silverado Trail Boss Custom. I had it in to look at something else and they found the bulletin and then kept it overnight so they could get a tech to do the update the next day. I think the paperwork is in my truck so I don't have the bulletin number handy.

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