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Nasty clunking from mid/front when accelerating - Yukon Denali
I had similar noises from my 09 Tahoe. Turned out my motor mounts were toast. Like my engine was pretty much ONLY using gravity to stay in the engine bay. Replaced both mounts, now it's smooth as glass. I would go inspect those before tearing into the transfer case or anything like that.- 09Magic
- Post #7
- Forum: Engine & Drivetrain
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6L80- Drive it till it quits, rebuild local or replace with rebuilt GM part?
I will add my .02 since I went the easy route and bought a reman'd 6L80 for my Tahoe. I bought from street smart transmissions and had it delivered to a local shop to install it - since I didn't have a way to install it. Everything went great and SS does warranty their products pretty well...- 09Magic
- Post #21
- Forum: Engine & Drivetrain
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2014 Yukon XL - LC9 5.3L blew up @ 94,xxx Miles due to AFM - New Motor!
I don't have all the specs such as DUR/Lift/LSA. I'd ask AMS or Texas Speed. They both offer complete kits. AMS responded really well to me. I know others have had good luck with Texas Speed too.- 09Magic
- Post #9
- Forum: Performance
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2014 Yukon XL - LC9 5.3L blew up @ 94,xxx Miles due to AFM - New Motor!
For any AFM delete: you will need non-AFM lifters and a non-AFM cam. AMS racing has a really good AFM delete kit with the cam, 8 lifters, gasket sets, etc.- 09Magic
- Post #7
- Forum: Performance
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Tuned out AFM 18 months ago... how long before lifter failure?
I disabled my AFM about 20K ago on my 174,000 mile, 09 Tahoe and (knock on wood) everything seems fine. Keep in mind that AFM uses oil pressure to collapse the lifters. With the delete, your ride is not trying to collapse the AFM lifters, so it's behaving like a standard lifter. That being said...- 09Magic
- Post #10
- Forum: Engine & Drivetrain
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Collapsed Lifter - After 3000 miles!
Can you tell us what your cold/hot idle oil pressure is? If it's not 40'ish cold or 25-30'ish hot, there's a chance that you've got a rotting/cracked o-ring at your oil pickup tube and you're sucking air. If your oil pressure is good, etc. then I'd look at replacing the VLOM. That's what sends...- 09Magic
- Post #11
- Forum: Engine & Drivetrain
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The OFFICIAL 2015 Tahoe unveiling thread
Three things...The Tahoe's of tomorrow are starting to look like the Yukon's of today...what a shame. Never like the droopy eyelid look of the Yukon. Second, it also looks like a little too much chrome on that Tahoe. Hopefully that is just the LTZ. Also, I hope Chevy pulled their...- 09Magic
- Post #178
- Forum: General Discussion
