I, get a clunk noise everytime from a stop, coming from the rear of truck i dont get this noise from switching gears only from a stop, the brakes are all new.. the rear end fluid is ok, the trans.fluid is ok, could this still be a rear end problem, or something with the 4wd.? this is driving me crazy..
I had a '91 Chevy Silverado with a similar problem. The noise was the drive shaft binding at the spline where it connects into the transmission. The shaft needs to slide freely and is unable to unless it is greased occasionally. Pull the drive shaft out from the transmission and grease the spline. This will quite it down immediately, if this is where your noise is coming from. It worked for me!
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Re: Clunk noise from rear of truck
How about the U joint? If it's shot, you will hear a clunk when u start up. You probably already know, but jack up the back of the truck (both wheels off the ground) make sure u blocked front wheels front and back so it can't roll, use jack stands so u don't get squished, truck in neutral, e- brake off, climb under, grab driveshaft and twist back and forth to see if there is slop or play in the rear universal joint. Let me know what u find. Good Luck, and don't get squished (or squashed). countrycurt0
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suggest that you talk with a diff reconditioning specialist center
if you have excessive pinion to ring gear clearance the diff will be making terrible noises not a clunk
what you have is worn side gear washers in the diff carrier and that is not essential to repair unless you get diff noise on turning corners
All diffs have play in the diffs that most people say is pinion /ring gear problems when it is not
the clunk noise comes from engaging a gear and the diff housing reacts to the load ( radius rod bushes , stabilizer bar bushes etc), the side gears take up the clearance, and the
"U " joints or cv joints take any wear
Best advice is--- if all you have is a clunk ( check everything outside the diff first) and the diff runs quiet under acceleration or deceleration, DON'T fix what ain't broken
I would tend to believe it's more likely a worn sway bar bushing or link if it's a rattle or a small clunk, if it's a loud clunk probably a strut, try bouncing he back of the car when parked, if you get the clunk probably a strut if only when driving,turning,braking probably just a bushing on the sway bar
IF PRESSING REMOTE TRANSMITTER LOCK BUTTON ONCE TO LOCK ALL DOORS DONT WORK.THE REMOTE HAS TO BE REPROGRAMMED AT DEALERSHIP.CLUNK NOISE GOING IN GEAR COULD BE LOOSE FRONT SUSPENSION COMPONENTS OR DAMAGED LOOSE ENGINE MOUNT OR TRANSMISSION MOUNT.CLUNK NOISE CAN COME FROM LOOSE DRIVE CHAIN ON TRANSMISSION DRIVE CHAIN SPROCKETS
Three things: Either the rear brakes are releasing, causing a clunk, try service and adjust rear brakes. If not, go to the drive shaft, check the u-joints and/or jack up the rear of the truck and rotate your tires by hand to see if there is a clunk in the rear end itself.
The problem is in the axle and differential. THe clunk or kick in the **** you feel is the axle spinning down at stop. The gears are what is making the clunking noise. When you release the brake and begin to accelerate teh gears have free play in them and the clunk then is when the two gears actually make contact. You might notice that when you first start your acceleration there is not an immediate response. Meaning the RPM's go up a tad before you actually start to move. Check the lubrication in the axle shaft and the differential. You can do this through a screw hole (plug) located on the differential. Its called the finger test. Stick in your pinky and it shoudl come back covered in grease adn oil. (please do this with vehicle off and on level ground, etc BE SAFE) If possible it should really have the differential cover removed and checked for metal shavings indicating abnormal gear wear or adjustment. If you are not a handy mechanic or have the ability to do this with the truck on a rack, its best handled by a qualified service location. You didnt indicate the manufacturer, but GM's are famous for this and some Fords are too.. but GM's more so. Good luck. P.S. if it were the brakes you would hear the clunk when you applied them but not when you released them.
Check the drive shaft u-joints.Another indication of bad u-joints is a vibration at certain speeds (like 65mph).There's play somewhere in the drive train.Check rear suspension too.Jack up back of car so wheels are off the ground,Have someone run the car through a couple gears and look under back of car for exactly where the noise may be.Also while back of car is off the ground w/car off put car in gear so the back wheels dont spin.Grab one of the wheels and rotate it back and forth from stop to stop and listen for any clunk noise.The wheel should turn less than an eighth from stop to stop.
The noise is caused by the axle button being worn out, this lets the axle move back and forth and clunk, this is a unique problem with C clip retained axles, it is a noise issue but will not fail and cause any more damage, in order to fix it you must have the axles pulled and the diff carrier checked for excess wear where the axle retainning C clip rides, if the carrier is ok then replace the axles.