It's an absolute joy to drive, and the engine is fantastic Unfortunately, with barely 3k miles on the truck, i've had significant two issues that have required return trips to the dealer A forum community dedicated to chevy and gmc duramax diesel owners and enthusiasts Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more 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 that are equipped with gasoline engines use a different transmission and are not affected.
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 happened when the transmission had an extremely hard shift at 55 mph and then went into 5 gear limp mode Computer through code p0700 and p0747. 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 pointers
Sent from my iphone using tapatalk 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 63k miles and blasting fans at 100% power For a while i could restart the engine and it would go away, eventually that. This applies to all 3.0 duramax's and newer 6.6 duramax's too It does apply to all lm2's It does not apply to lzo's full size suv's are still using the lm2
Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! 07 gmc sierra classic (lbz) duramax dually crewcab 4x4, fass titanium 95, ohio diesel parts tank sump, bypass engine oil filter, synthetic lubes 84 chevy 6.2l 1.25 ton (army cucv) with banks sidewinder turbo and gear vendor's overdrive 83 chevy suburban 6.2l 4x4 Retired journeyman heavy duty truck mechanic reply like j jake111
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