u/Mammoth_Telephone_61

This is my dad’s brand new gmc elevation with a 5.3 in it. it’s new old stock so it’s a 2025 that he got brand new with only 30km on it. He’s had it for a month and a half and this just happened the other day. At first it got sluggish than the rpm’s started jumping up and down. He turned it off and tried to restart and now the truck doesn’t start anymore. The dealer has had it for 3-4 days now and have no update for us, all we got was engine needs to be torn down we don’t know yet. To me it seems like a communication failure or ecm failure. These are the codes. Truck just cranks now no start.