I bought a 2025 GMC Sierra 1500 Denali Ultimate Duramax and overall, I love the truck. It's an absolute joy to drive, and the engine is fantastic. Unfortunately, with barely 3k miles on the …

Mar 17, 2025 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, …

Nov 15, 2024 · Notably, all affected units covered by GM Safety Recall number N242454440 are equipped with Duramax diesel engines. Vehicles from the same nameplates and model years …

May 7, 2025 · I have a 2023 GMC Sierra HD3500 6.6 Duramax. March of 2025 the valve body failed after 23,000 miles, which around 6,000 miles was hauling 3,000lbs, no more. The failure …

Nov 25, 2024 · I have a 2022 3500 dually Duramax now and haven't had any problems so far and was wondering if there is any advantage to buying a new truck? Thanks in advance for any …

Dec 11, 2021 · I’ve been looking to get a new truck and was looking at the GMC AT4 1500 with the 3.0 Duramax and was wondering if there are any problems with this motor and what else …

Mar 18, 2024 · Hello folks, I successfully repaired my coolant control valve at home, no dealer fees, or WAITING for spare parts required…My 21 Sierra started throwing the P1098 code at …

Nov 16, 2023 · This applies to ALL 3.0 duramax's and newer 6.6 duramax's too. NO. It does apply to all LM2's. It does not apply to LZO's Full size SUV's are still using the LM2. 2023 and 2024 …

Sep 6, 2023 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, …

Oct 12, 2023 · LM2 vs. LZ0 1500 lm2 lzo sierra silverado Jump to Latest 54K views 22 replies 14 participants last post by Gil duramax 23 May 6, 2025 JayLLY Discussion starter 432 posts · …