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Silverado 6.2

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Everything posted by Silverado 6.2

  1. Silverado 6.2
    My 2014 had the shake from 73-80mph, it would be there some mornings and not others and then the ride home it may be there and it may not. I had Firestone Destination AT P275/55 R20 installed before i picked it up from the dealership new. I changed my tires out 2k miles ago to BFG KO2 275/55 R20 load range D and have not had the shake since. I think its something to do with the air flow/aerodynamics and the tire bounce from the P series tire excites it like a basket ball bouncing, i noticed the shake wouldnt be there if there was a side wind. This is just my evaluation over the last 4.5 years of owning it.
  2. Silverado 6.2
    This might be under the 5yr 100k warranty since it involves the tranny
  3. Silverado 6.2
    Discovered something interesting yeasterday, For people that have a Crerw Cab try going down the road at 60MPH and only roll down your back passenger window, it gives the worst buffeting sound ever and starts to shake the truck side to side just like when the truck starts shaking with the windows up, i really think that in a lot of cases the people that have the shake on and off that its something to do with the way air is flowing over and around the truck, any change in the flow makes it start shaking. This is just what ive noticed with my truck. I can also watch my roll up cover in my rear view mirror and see the flapping of the cover goes with the shaking of the truck when it is doing it.
  4. Silverado 6.2
    Set up a dial indicator and spin the wheel studs around until each one hits the indicator and take the reading, that should give a pretty close idea if they are off center.
  5. Silverado 6.2

    pickup camper ranger

    Images added to a gallery album owned by Silverado 6.2 in General/Off Topic

  6. Silverado 6.2
    Pickup camper ranger

    From the album: pickup camper ranger

  7. Silverado 6.2
    I agree with you, mine is the same way, some days the same road in the morning it will shake a little but not on the way home and some days it wont in the morning and it will on the way home, sometimes it starts at 72-73mph and sometime 77mph, i can watch my roll up cover on my bed while its shaking and it is fluttering in the same manner that the shake is. Not saying its the problem for all, but in a lot of peoples case sure it is, because when everything is good that rotates it has to be air flow/air density.
  8. Silverado 6.2
    As long as you have had it to the dealership before for the Vibration before the warranty ran out it should be covered after warranty runs out because it is an on going issue that has never been fixed.
  9. Silverado 6.2
    Pinion angle is bad while under breaking or ring gear tolerance maybe.
  10. Silverado 6.2
    Sounds like the pinion angle is getting out of alignment or the rear gears are machined wrong.
  11. Silverado 6.2
    More like millions, they sell over 700,00 a year since 2014
  12. Silverado 6.2
    Im not saying its your leveling kit, im saying its probably your rear drive shaft angle when under hard acceleration at high speeds over 75mph like mine was. If you check the angle while sitting on level ground it could be ok, but when high torque is applied to the rear end like while driving at high speeds and then flooring the gas peddle the angle can be way out of spec, i think the reason for this is the spring are to soft for the first couple inches to give a better ride which then makes the differential twist up and down to much, that is why if you try the leaf spring clamps behind the block it will stiffen up the spring pack so it dont twist as much.
  13. Silverado 6.2
    You will have to take it to the dealer and have them ride with you to hear the noise, they will not take it to that speed or drive it aggressive, and if it is the pinion twisting up under hard accel at high speeds then they need to put shims in, the rear wedge shim they put on mine is additional to the block that is under the leaf springs, and they put spacers between the transfer case and the mount but on yours they would put them under the tranny. You could also go to the part store and get some leaf spring clamps and put them 8'' behind the rear leaf spring block, that will help stiffen up the spring pack and stop the pinion from twisting up as far, it wont hurt the ride of the truck either. tThe clamps are cheap also You will have to take it to the dealer and have them ride with you to hear the noise, they will not take it to that speed or drive it aggressive, and if it is the pinion twisting up under hard accel at high speeds then they need to put shims in, the rear wedge shim they put on mine is additional to the block that is under the leaf springs, and they put spacers between the transfer case and the mount but on yours they would put them under the tranny. You could also go to the part store and get some leaf spring clamps and put them 8'' behind the rear leaf spring block, that will help stiffen up the spring pack and stop the pinion from twisting up as far, it wont hurt the ride of the truck either. tThe clamps are cheap also
  14. Silverado 6.2
    Mine has not came back
  15. Silverado 6.2
    The shims they put in go under the the transfer case or in you case under the tranny mount and the ones they put in the rear are a wedge block that pointed the pinion downward more so when a lot of torque is being applied the pinion doesnt twist up to far
  16. Silverado 6.2
    I had the same issue and it ended up being my drive line angle was off, I also have a 2'' leveling kit. They put shims in the rear with the larger end facing the front of the truck and shimmed the transfer case up. What was happening was under acceleration while moving the truck that fast the engine was applying a lot of torque to the rear end which twists the rear pinion upward and makes the drive shaft angle off. Mine would only do it when i was traveling 75mph or more and accelerated hard. The joints need to cancel one another out with torque applied to them. I also have the 6.2 engine with 373 gears, so that also applies more torque to the rear end.
  17. Silverado 6.2
    Your vibration is probably coming from exhaust harmonics, mine does the same thing, i can hear the exhaust tone and feel the harmonics at the same time and only when giving a little more gas to speed up on the highway or when the engine starts to lug going up a hill.
  18. Silverado 6.2

    Pickup

    Images added to a gallery album owned by Silverado 6.2 in General/Off Topic

    31ft camper 18.6' boat
  19. Silverado 6.2
    pickup camper boat3

    From the album: Pickup

  20. Silverado 6.2
    It could be your drive line angle is changing to far out of spec on decel, the engine is acting as an engine brake in return twisting the pinion down, that may explain why it goes away in neutral because then the engine isnt trying to slow down the pinion speed and keeping it more in line.
  21. Silverado 6.2
    I can hear mine from in the cab while driving also if the radio is off, if you take a stethoscope to the trans you will find that the noise is not in the trans and then take the scope and listen on the oil pan and follow it to the timing cover it will get louder. I have already did this because I had the same concern you do with the noise. So yes maybe you do need stuff explained to you unless you are the all mighty know it all.
  22. Silverado 6.2
    The whining noise is not coming from the trans, it is coming from the new 2 stage vane style oil pump on the engine. The pumps make a whining noise that carries down the pickup tube to the bottom of the oil pan making it sound like its the trans when listening under the truck.
  23. Silverado 6.2
    Did they put them in the front side of the spring or the rear side? I had some put in the front side of mine to push the pinion down and they also raised the transfer case up 3/4'' and it has gotten rid of my vibration under acceleration from 72mph on up. My vibration would only start to come in when I was accelerating through 72mph and keep accelerating or if I was doing 75ish and floored it. What was happening was the pinion was rolling up under hard load and torque at that high of speed and was getting the drive shaft u-joint angles way out of spec causing the rumbling vibration a was getting. This could be what is happening to others also but only at a slower speed and not under acceleration. The angles might be fine when measured but when going down the highway with torque against it the pinion is rolling up and the angles are off.
  24. Silverado 6.2
    Where did you find this out? Mine is going in this week so I will ask them about it. Thanks
  25. Silverado 6.2
    Most winter tires are made of a softer compound which would smoothen the ride.

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