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Oh I put Power Service in it before all this happened. Still had gel.

It peaked at -10. The dealer changed the fuel filter and let it warm up overnight in their shop and that seemed to do the trick. I asked if there was anything more that I could do to prevent it from happening again and the response was park it in a garage, which my truck won't fit into.

Now she won't shift out of third gear without the engine shutting completely off and I am getting the reduced engine power service ESC message. Limped it to the dealership and the guy at service told me the fuel was probably gelled which I though was interesting considering I have been using...

My 2020 gmc started making this loud hissing noise the other day and it seems to be getting worse. Not sure if it is the cold weather or some other issue. Anybody else experiencing this?

Thanks! Did you have to make any modifications to add it or did it bolt right on?

Thanks for the info. Great looking truck!

I've been searching for skid plates for my 2020 Sierra. Did you have to order yours from the dealer?

I have been having a tough time finding accessories for my 2020 Sierra. It seems a lot of the websites I have checked specifically say the accessories won't fit the diesel models, or they don't sell accessories that fit them at all. Has anyone else run into this? I am looking for skid plates and...