Daniel Rey

Yea, sorry for the no reply. Yes I did the ol battery and computer drain trick. It did work last week but dealer was closed. I started it and turned it off 5 times like nothing was wrong. Went to work on a call out and came home and nothing...remote start seems to be intermittently working as well. From everything i have seen it seems like its going to be door switch or BCM. I do get parasitic power draw. Dead battery overnight and have seen the screens staying on for a few mins longer after shutting the door. The warranty company requires you have a gos tracker and its tied i to the BCM Via being pgysically connected to the OBD port so im thinking that may be an issue. GM covered themselves by adding in the manual "adding any other electronics may cause truck to malfunction" or something along those lines. I was able to get the Xtool D7 scanner(bi-directional) and get the parking brake off. So we got it towed without any issues on Friday evening to our local GM dealer. Hopefully this warranty company does get stupid and just pays what they should to get me fixed and running. I was explaining my problem to the woman taking my keys and such at Dealer and she said you can't program just 1 remote. 1 remote is all the truck came with. I told her that needs to be in the manual if that's the case because I read the manual and it says nothing about having to have more than 1 remote. I will come back and update once I get some input.

Thanks man, I'm trying to get it to the dealer right now...last week tow company broke their cable trying to drag it and their other truck had engine problems. Appreciate the reply.

So I am having this same issue. I put the xtool D7 and I get this coming from the BCM. I am having 3 of the several BCM failing/BCM going out symptoms. I have a 2021 2500hd Duramax and I have had to be towed home and I have successfully got the truck started 2 times in the past 2 weeks but always too late to bring it to the dealer or i had to go to work for a call out and i had to take my other truck due to not trusting this truck. This is some b.s. I have 0 faith in GM anymore. They have over complicated the hell out of these trucks. my truck was stuck with parking break engaged and no way to remove it. Tow truck driver had to literally drag the freaking 65k truck on his flat bed. When I eventually got the truck started I immediately removed the parking break so that isn't am issue for the next time I have to get it towed which is probably today. This design to not allow insering a key inside the truck and over riding the electronics that are clearly a problem. GM clearly thinks their engineering is better than it actually is. Absolutely no work around for when their products. No wonder they don't hardly give you a warranty. I guess they don't trust their own products now that I think about it. Sorry for the rant I'm just extremely frustrated I've spent nearly 600 dollars just trying to get the truck to the dealer to get it fixed.

Did anyone ever figuire these issues out. I am currently sitting in a parking lot trying to get my truck started. Remote start works but my start engine button does nothing....nor does it let me take the truck out of remote start