Recent content by Eastwood

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    Transmission or Engine

    It appears it's only the 10-speeds with diesel engines.
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    Transmission or Engine

    Several times while driving my 2021 LM2 diesel truck I've experienced a loud bang inside the truck and feels like it's either the transmission shifting on the engine, not sure. The last time it happened my wife said did you hit or run over something. Anyone else experiencing this problem? Just...
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    DEF, Platinum DEF?

    I'd think this would be part of the emissions warranty coverage.
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    DEF, Platinum DEF?

    I've also read if you use the platinum DEF fluid you get more miles between regens. I plan on trying it the next time when I get low on DEF fluid.
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    Is this be the end of the 3.0 duramax?

    https://www.autoevolution.com/news/the-beloved-duramax-engine-has-just-gotten-killed-what-will-gm-use-in-its-place-238275.html
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    Failing Sensors

    I recently had the check engine light come on and after a road trip of 100 miles at an average speed of 50 miles per hour the check engine light went out the next morning. I have around 25,000 miles on the odometer after 3-1/2 years of ownership and will take it in to the dealership to...
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    2021 GMC Denali 3.0 LM2 Engine rattling

    Thanks for the reply, however mine has never done it and started about a week ago. Wondering if the diesel fuel has something to do it so will buy another tank at another station. Have also read that the injectors might be a problem. If I'd had the noise since new I wouldn't be as concerned...
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    2021 GMC Denali 3.0 LM2 Engine rattling

    My 2021 GMC Denali has approximately 18,000 miles on it and the engine is making a rattling sound under light acceleration. This just started has anyone else experienced this issue? This sounds like pre-ignition in a gasoline engine.
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    Fuel injector pump

    Has anyone had their fuel injector pump fail or replaced? Watched a youtube video stating it will most likely need to be replaced at 100,000 miles.
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    Reprogram 10L80 Trans?

    I agree on being the smoothest powertrain on the market and can't believe Ram and Ford both discontinued the diesel option in their light duty trucks. I hope GM keeps offering the diesel in their light duty trucks and SUVs. Diesel prices have dropped in Missouri and it is now only about 20...
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    Fuel cap mod

    Several weeks ago I noticed diesel fuel below my fuel tank on the garage floor and looked underneath and could see where it appears to have ran down from around or above the fuel tank. Took it to the dealership and was told there is a valve in the fuel filler hose that has to be replaced and...
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    LZ0 Duramax engine to be revealed on 8/16

    Yes and understand they also changed to a different injectors than what is on our LM2 engines.
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    LZ0 Duramax engine to be revealed on 8/16

    The LZ0 has many upgrades and concerned my 2021 LM2 will have problems in the areas they addressed and improved upon with the LZ0.
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    Multi-Pro Tailgate

    The 2022 Detroit Auto Show.
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    Multi-Pro Tailgate

    I was watching a TFL Talk youtube video doing a walk around at the Detroit auto show and noticed that a GMC truck with a Multi-Pro Tailgate has a black plastic overlay on the upper half of the tailgate. Has anyone seen this before? I'm curious where I could buy this overlay on the tailgate to...
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