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Yes it fires up ok but throws the codes immediately. It shuts down if we try to get it above 10-12 mph. It’s parked now waiting on a roll back.
Bummer. I'd be ticked off, too, but with multiple sensor dependent codes like those I'd bet it's not really a problem with the engine or tranny. More likely a module, wire, connector, sensor or such. Keep us posted and let us know what you find out.
Sorry for your luck. I'm sure GM will get it sorted for you. I hope you are back enjoying your truck soon.
Sorry to hear you’re experiencing this. What’s crazy is, that barrage of error messages you mentioned are what many of us have experienced when lifters have failed. I’m not mechanically inclined at all but I assumed that the diesel and gas engines don’t share much of the same technology like DFM/AFM, so I wonder if that’s just a generic engine error message response with our new Tahoe/Yukons. Keep us posted on what service ends up figuring out what the issue is. Hopefully they’ll get you back on the road real quick.
I have similar issues. Major electrical problems. Last week was in the shop for 2 days and they couldn’t figure it out. Today it stranded me at Costco for 3 hours. Had to be drug onto a flatbed tow truck and taken to the dealership. Zero power and it locked me inside the car. Onstar could not unlock the car. I’m so not happy either. Paid 86k out the door for a junk car. Only has 16k miles on it.
Almost anything could cause that, bent pin from assembly, loose wire chafing and shorting, etc...likely an assembly issue, let them debug it, they will make it right. Could be a loose ground, etc.
The part finally came in. Put the new block in Monday. Let’s hope that’s the issue. Been 3 weeks no truck
You just pull the door handle twice and it unlocks, you can't get locked in unless you are behind a cage in the back with the child lock turned on
Update. Put the new block in. Still popped a fuse. GMC engineers now involved. They have no answer on why yet. Hoping to know today. There telling me the fuse block is still good though
Update. Put the new block in. Still popped a fuse. GMC engineers now involved. They have no answer on why yet. Hoping to know today.
Me too, but mine lasted longer. It stranded us in Wyoming. Finally limped into Boulder Colorado. The next morning it worked fine but stranded me again after a few miles. It’s currently disabled and has been sitting in the GMC dealer in Boulder COLORADO GMC has been most unhelpful. I will never own another GM. Things break but you can not fix it? and the vehicle goes on buy back? After 3 months nothing has changed. I guess my plan is to declare it a loss on my taxes. I’m not happy with GM either
