Champ14

Ok i will get them to look over everything. The dealer told me to replace the ecm was 500-1k.

I need help. I have a 2014 sierra denali. I went to JR electronics in miami has them install a Memphis 1000x1 amp and a pioneer 12 in sub that was recently in my 2007 f150 harley. I'm backing out of my driveway then put the car in drive and my truck shakes. The center cluster says stability track off drive with care. I try to accelerate and cant. I pull over and turn the truck off. I try to restart and nothing. I end up having to get towed to the dealer and they tell me my sub and amp fried my ECM. The dealer covered it but left my amp disconnected. They said if I connect it and it happens again they won't cover it. I contacted the store that installed it and the dealer spoke with them. They just played the blame game. The store is a reputable shop that I have gone to for 10 years. They will look at my truck and double check everything. Is it even possible for a amp or sub to blow a ecm or was the dealer just blaming that?