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Chevy Silverado and GMC Sierra Noise and Vibration

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  • I have a squeak that just developed tonight. It seems that the squeak is audible once for each time the driveline makes a revolution. Could it be a u-joint? There doesn't seem to be much play in the driveline when I'm under it and try to move it around. There seems to be a bit of grease on the transfer case housing coming from where the rear driveline enters the transfer case but that may be normal...the grease isn't fresh or dripping by any means.

    Anyone experienced the same thing? Thanks in advance.
  • No need for anyone to assist me with this one....I dropped my driveline and the only u-joint that seemed to be a slight issue was the single cardon...the double cardon was doing just fine (modified driveline due to the 6" lift)....pumped some grease into the existing u-joint and was well on my way to a squeakeless ride....Thanks anyway
  • KCRamKCRam Mt. Arlington NJPosts: 3,516
    Thanks for returning with your fix - may help someone else in the future :)

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  • my gmc 1997 sierra 2500 series with 2 wheel drive and extended cab 2 doors, has a problem with the driveline..to me it looks to have somethign to do wit the middle exchange area.. any ideas?! it will used to thump sometimes when it was tgoing through the geears but now thats doens't happena nymore now it just has a horrible squeal usually at lower speeds..
  • my gmc 1997 sierra 2500 series with 2 wheel drive and extended cab 2 doors, has a problem with the driveline..to me it looks to have somethign to do wit the middle exchange area.. any ideas?! it will used to thump sometimes when it was tgoing through the geears but now thats doens't happena nymore now it just has a horrible squeal usually at lower speeds.
  • anyway.. i was wondering.. what should i do for starters and secondaly what could possibly be the problem... i did take auto shop 12th grade but that was last year.. driving to college each day 4 times a week means i need to get it fixed pretty soon.. so many questions..
  • Not familiar with the problem you're describing; Mine was definitely the u-joint. Sorry I couldn't help. Try searching the other forums and discussions as well, there seems to be a lot of talk going on about squeaks and thumps in the Silverado drivelines. Good luck!
  • i have a 2003 1500 hd sierra, at 40+ mph i havea thump , thump thump noise, you can feel it in the steering wheel, the floor and pedals. when you apply the brakes it seems to stop. or when you turn a curve it seems to stop. i have checked everything i can, greased the steering , checked the brakes, fluids, u joints. i think i'm down to wheel brg. but they dont seem to be lose or feel rough when i roll the wheel jacked up. has anyone else had this prob? this truck has not been abused.
  • I have the exact same problem, the thumping noise coming from the driveline.2003 GMC Sierra HD Crew Cab, 58,000 miles. It has not been abused. The thumping noise occurs intermittently, in 2wd or 4wd, and applying the brakes somewhat dampens the noise. Been to the dealer twice and driven it with the service manager, but he doesn't really hear it or feel it. He says it may be the bearings or something like that. Sometimes the thumping gets so loud it sounds like a helicopter instead of a truck. Help!!!
  • thanks for the answer, i am going to pull the bearings off this weekend and replace i'll let you know what happens.
  • The thumping occurs at highway speeds, 60-70mph as well as the lower speeds. Seems to go away a little bit when turning to the right. I wonder if it is somehow connected to the problem with the intermediate steering shaft "clunking". Perhaps some harmonic vibration? I just replaced my tires ($704.00) because i thought the tires were cupping and causing the thump, thump thump....sound. Like I said, it is intermittent, but can be extremely loud. Very annoying. I'll look for your response. Thanks.
  • mine is the same way, i greased the intermead shaft and it quietened it down some, but still there.
  • Any luck greasing the bearings?
  • ahoronahoron Posts: 30
    bearing are sealed in the hub can't grease them just replace about $200 each side plus labor
  • Did replacing the bearings stop the thumping?
  • have not done anything yet been out of town and now have the flu. ahoron, did you have the same thing?
  • My 98 Z71 had the same noise. Lasted for quite awhile before fuel pump stopped working. A trick to get u through is if the pump does quit working... Tap the tank with a rubber mallet, or shake the truck (with at least half a tank of fuel) and most times the pump will work again for a while.
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