Question about 2000 Chevrolet Silverado 1500
Vibration while accelerating, vibration stops when you let off, vibration stops when going into passing gear
Posted by Anonymous on
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Posted on Jan 02, 2017
I would suggest a rear differential service. When the fluid breaks down in the rear it doesn't provide the proper lubrication for the rear and you'll hear the "moan". Don't forget to buy and add the limited slip(posi-trac) additive.
As far as the rear end noise, There was a TSB released on GMC light duty trucks that says "Some owners of light duty trucks equipped with automatic transmissions may comment that the vehicle exhibits a clunk noise when ******* between Park and Drive, Park and Reverse, or Drive and Reverse... Whenever there are two or more gears interactin with one another, there must be a certain amount of clearance between those gears in order for the gears to operate properly. This clearance of freeplay (also known as lash) can translate into a clunk noise whenever the gear is loaded and unloaded quickly, or whenever the direction of rotation is reversed." It goes onto say "...Whilse some owners may find the clunk objectionable, this will not adversely affect durability or performance."
Posted on Apr 16, 2009
SOURCE: rear end gear ratio
you can count the teeth on the ring gear and divide that # by the tooth count on the pinion. An example is: ring gear 100, pinion 10 ...100divided by 10 is 10, expressed as 10 to one. (fake #) your diff is likely a 3 series such as 3.23 to 1. or a four series such as 4.11 to 1. If you have four wheel drive it is critical to match exactly. if not you can get better performance by changing ratio to something that better fits your needs. 4 series pull loads well, 3 series are better on fuel.(depending upon terrain)
Posted on Jun 28, 2009
Vibrations of this nature are usually associated with the Drive shafts, Universal Joints, Center Support Bearing and Intermediate Spline immediately behind the Center Support. Additionally, the Sleeve Bearing in the Transmission and the Slip Yoke could also be worn. My honest opinion would be the Center Support Bearing and the Spline and Slip Yoke directly to the Rear of the Center Support. The Slip Yoke is equipped with a Grease Fitting and probably has never been Greased. The Rear Drive Shaft Section has the Male Spline and it could very well be badly worn if it hasn't been greased. Drive Shafts also have Balancing Weights which are prone to Rusting Off in our northern states where Salt is used on the roads in the Winter. Examine all drive shaft sections, U-Joints and Slip Yokes for slop and damage. This is best done on a hoist.
If this is NOT the Problem, have Front and Rear Suspension and ALL Tires checked. Many times these vibrations are caused by Wheel Bearings, Tires or worn Suspension Components.
Posted on Jan 13, 2010
The torrsion bar is the front stabilizer bar. You need to jack it up using
that,then carefully place 2 jack stands,one to the right,and one to the
left end. Be very careful,when performing any jacking procedure.
Act as if the vehicle will fall,at anytime,and be ready,and safe. Good luck.
Posted on Apr 01, 2010
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