Question about 1997 Chevrolet K1500

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Smooth Grinding noise From Under Vehicle

The noise I hear on a 98 C1500 sounds like it comes from the rear of the truck where the differential is. I cant hear the noise from outside the truck when someone else is driving it also the noise is affected by the up and down movement of the bed. we use it to haul a full size trailer so I believe this has an effect on it also. the noise is smooth like grinder on a knife and is not so subtle

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Bad rear differential or rear wheel bearings. Good Luck

Posted on Dec 16, 2008

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1994 Land Rover Discovery Manual has a grinding and clunking noise from rear, right side


A grinding noise suggests a bearing at fault or perhaps worn pads on the brake rotor.

However, the clunking noise you mention could also point to a problem with the drive shaft or differential.

The first thing you should do is to get under the vehicle and try twisting the propshaft back and forth. If there's any movement this points towards a worn universal joint on the propshaft. A worn universal joint can cause a clunking noise - particularly when pulling away. The vibration caused by a worn universal joint can also damage bearings in the differential and also to the splined ends of the axle shaft.

You're also going to have to remove the wheel from where the noise comes from and examine the end of the axle shaft/bearing.

The link below is of images of the rear axle:

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Why do I hear grinding noises while driving?


Hit in the rear axle may have damaged bearings or brake parts. Jack up the side you hear noise from, put on stand, then have helper rotate wheel while you look underneath and listen to see where noise is coming from. Use length of old fuel or heater hose, one end in ear, to locate exactly where noise comes from.

May 27, 2015 | 1996 Jeep Cherokee Country

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Wheel bearing


If grinding noise is heard coming from front side, lift up both the front wheels and rotate the wheels one by one to listen to the sound, if any. If a noise is heard, replace the front wheel bearings as a set.
If the front wheels do not produce any abnormal noise when rotated, lift down the front vehicle. Lock the front wheels with blocks, release the hand brake. lift up the rear wheels and try to listen to the abnormal noise. If the noise is heard, replace the differential bearings and seals. Top up the differential oil to the mark.

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I have a 99 mustang. I went to put it in first and drive and I heard a clucking and grinding noise coming from the rear end I'm a girl and would just Like to know what the problem is....please help


If the noise is coming from below the trunk area(by the rear wheels), It may be that the differential is probably going bad and the grinding is coming from inside the differential. Inside the differential are gears and they will grind and cluck if they are going bad or bad. The car may or may not move depending on the damage inside the differential.

Jan 18, 2013 | Cars & Trucks

1 Answer

I have a 2003 Dodge Ram 1500 4x4. When the truck slows to a stop, and just as it stops, there is a very loud grinding noise that comes from the rear of the vehicle. I checked underneath and there is fluid...


The fluid splattered all over is most likely coming from the pinion seal. (The seal at the front of the differential where the driveshaft yoke goes in.) Normally, you would remove the driveshaft and the pinion yoke to relace the seal. The grinding however, leads me to believe that the seal leaking is a RESULT not a CAUSE of your problem. The way you describe it sounds like you may have some serious pinion and/or ring gear damage inside the differential.
If this is the case, there are severl ways to go about repairing this. You could tear your differential apart and replace the defective/damaged parts inside. You could replace your differential with a used one from a salvage yard. You could replace your differential with a remanufactured differential assembly.

To check for damage, remove the rear cover from the differential and check for metal in the oil and in the bottom of the housing. You can also turn the ring gear around and check for broken teeth. You can also inspect the spider gears and pinion gear for damage.


















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1 Answer

When I make a turn going 30-35 mph and the weight of the vehicle is at maximum force, I hear a clunk from underneath the vehicle. What could be producing this sound?


Try changing the gear oil in the rear axle. Be sure to add a Slip Differential Additive paste to it (Autozone sells the paste and the gear oil).
The noise is coming from the differential in the rear axle and you will hear it when the vehicle changes from one direction to the other. Drive a hard zigzag line in a vacated parking lot and you should hear it at each shift in direction.

Change the front axle gear oil also if it had never been down. Usual interval for both is 30,000 miles.

Mar 01, 2011 | 1995 Isuzu Rodeo

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