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  1. lbenson

    2018 L86 6.2L Lifter Failure - Fix or get rid of?

    At 135K miles, lost my cylinder 1 lifter, bent the pushrod and took out the camshaft with it. My independent shop does not recommend rebuilding and just to go straight to either a new engine or a cheaper reman option (17.5K for new engine, 12K for reman). I like the truck but when considering...
  2. lbenson

    Who has had issues with serpentine belts?

    I have 83k miles on my 2018 Denali. Started in past couple weeks to get a constant squeaky sound that gets louder as I accelerate. Can hear it outside but much more noticeable in parking ramps where noise can reflect. Cannot really hear in cab unless music off, but can hear with windows down...
  3. lbenson

    2018 6.2L, UPDATE: Lifter failure at 80k miles

    Hi Everyone. I went out this evening and started my truck remotely in my parking ramp as I approached it. And then I start to hear this awful sound... My guess is a lifter is starting to fail. It has given me 7-15 seconds of squeaky sound every cold start the past 6-8 weeks. This knocking or...
  4. lbenson

    2018+ 10 Speed Transmissions... Fluid change interval recommendations?

    Hi all, I just wanted to ask everyone with the 10 speeds in their trucks what they have been told by their dealers as far as fluid flush intervals for their transmissions? My local dealer says their techs say to not touch the fluid. I have 72k on my 2018. The 10 speed has treated me much...
  5. lbenson

    2015 8 Speed Transmission 1st Gear Slip

    Have 175k on my 2015 Denali with the 6.2L and the 8 speed. Engine runs like a dream. Transmission did until Friday when my local dealer flushed it at my 45k interval. Picked it up and got half mile down the road, it was slipping really bad and grinding. Took it right back after a couple miles...
  6. lbenson

    Shake above 70 mph, gets worse as I go faster

    I own a 2015 Yukon Denali with 171,XXX miles on it. I now have a bad shake at 70mph plus that I cannot outrun as I go faster, it only gets worse. New wheels and tires installed roughly 3000 miles ago back home. Now at school, I had my local dealer check to see if any wheels were out of balance...

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