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Silverado 6.2

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  1. Silverado 6.2
    Mine is the 6.2 373gear 6.5box and a big aluminum drive shaft. I also think it could be the drive shaft, although mine does not vibrate while driving at any speed. What mine does is on a hard take off i will feel a vibration in the floor, seats, and center console but goes away as the rpms start getting toward 5000, if i stay into it with the peddle to the floor all the way up to 80 i can hear and feel a vibration coming from the rear of the cab as i start coming up on 70mph but only while its floored if i lift off the peddle a little it goes away. So what im wondering is if its drive shaft deflection causing a slight vibration on my hard takeoffs and the same when its loaded hard wide open throttle at 70mph.
  2. Silverado 6.2
    I believe when the engine is in v4 the torque converter does not fully lock up, at least that's the way my 08 was, I haven paid attention to my 14 to see. I could tell by watching the rpm on the highway and when it when to v4 the rpms went up 150 or so and stayed that way until it went back to v8
  3. Silverado 6.2
    I would say that if it really does ride stiffer then you past trucks then you may have a shock issue because I had an 04 z71, 08 z71, 2011 max trailering pack, and now a 14 max trailering pack and this 2014 rides so smooth and soft it makes all my old ones feel like a 1990s truck. My brother has a 2011 f150 crew lariat with may tow pack, mine even rides better then his and his is smooth and soft. I also have firestone destination AT tires on mine if that would make a difference.
  4. Silverado 6.2
    I also have no vibration and have the a crew cab 6.2 max trailering package with 6.5 bed
  5. Silverado 6.2
    build date is on the inside of the drivers door on a tag
  6. Silverado 6.2
    Find one you like and drive it for a day to see if there is anything wrong that you have seen on the forms and if there is tell them you want it fixed before you do paperwork
  7. Silverado 6.2
  8. Silverado 6.2
    Yes im sorry to say but it is normal for it to do that, they can put vibration dampeners on the exhaust to help with it, or you can get it programed out so it dont go to V4 mode cause going to V4 really doesnt help that much in mpg to deal with the vibration/ HMMM sound if it is a problem to you. Hope this helps
  9. Silverado 6.2
    Could you post that thread if you can find it?
  10. Silverado 6.2
    Mine is just like yours, but it don't have to be full throttle just accelerating hard
  11. Silverado 6.2
    My thought of the flex plate or torque converter being out of balance is out of question i think because if they were out of balance it would do it in park as you rev the engine and mine does not its smooth as glass, but i turned several corners today and powered into hard and it still had the vibration every time. Wonder if it isnt something with the engine mounts being to stiff, but they are supposedly hydraulic so they should take up the engine vibration when loaded. Im lost on it
  12. Silverado 6.2
    My 6.2 with 373s also has that vibration on a harder acceleration, to me it feels like it goes with the RPM of the engine like possibly could be the flex plate out of balance or torque converter. It just feels like the engine is out of balance, but also I think I only feel it in first gear then when it shifts to second its gone. The weird thing is I don't think it vibrates in park when the engine is revved. I will mess around with it a little and see if I can narrow it down
  13. Silverado 6.2
    Something is wrong with your truck majorly then cause ive had an 88,99,04,08,11, now a 14 and it is by far the best riding/driving truck ive owned, drove, or been in and mine has max trailering package. My brother has a 2011 lariat F150 and its better then it. Hope you get it figured out cause they are a joy to drive when all is good with them
  14. Silverado 6.2
    Yes
  15. Silverado 6.2
    Since there was a tail wind you maybe feeling the vibration from when its in V4 mode. Just a thought
  16. Silverado 6.2
    Maybe a bad hydraulic engine mount, dont know just throwing it out there.
  17. Silverado 6.2
    What goodyear tire are having the most problem 20" ls2 or the 18"? I had the dealer put Firestone Destination At on mine before I even picked it up. I have 20s and sold the goodyear ls2 that came on it to my buddy so I hope they aren't bad cause he hasn't put them on yet.
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