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I bought a 2020 gmc with the 3.0 Duramax new 2 1/2 years ago. At 50,000 miles it was using one quart every 1,000 miles and around that time the check engine light came on. Took two dealerships two weeks to decide it was the cam chains. 90+ days later I got my truck back. Said that that wouldn’t...

Yes it is odd that they don’t have parts. I believe it’s because they’re changing parts to solve issues and the parts haven’t been made or maybe not redesigned yet. Ford scrapped their small diesel and I’m wondering if GM is going to do the same. Oh and yes I have escalated this up the line...

Yes thank you for the post. That was my first post on my third GMC Sierra Denali. I loved the GMC Sierra Denali with the 6.2L and loved the 3.0 until I was told (45days ago) I couldn’t drive it because of the engine but I still need to pay for it even though it’s under warranty and they can’t...

I have a Duramax 3.0 in my 2020 GMC Sierra with 58,000 miles. It's had 58000 miles on it for 40 days and counting and putting on no more because it's been in the shop since July. Engine light came on and first dealer said it was wiring harness. It wasn't. Second dealer say's timing chains are...