Question about 1999 GMC Suburban

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My truck has a vibration to it when i drive. It appears to have it only when gas is applied. What could be causing this etc..?

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Check first the tire balancing, if not ok check the universal join on drive shaft, or transmition support is brooke.

Posted on Nov 14, 2010


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Can bad 02 sensors cause the engine to vibrate and make a humming noise? or bad motor mounts

Bad O2 sensors affect the fuel/air mixture. Vibrations can be caused by many sources, hard to diagnose here. To test the motor mounts. apply the parking brake, open the hood. Put the car in drive and step on the brake with one foot while applying full throttle with the gas pedal. Watch for excessive engine lifting on one side. Be careful not to have the engine fan to contact the shroud. Now do the same in reverse. If the engine lifts excessively, your mounts are shot. If the engine stays put with only a slight movement from torque, then the mounts are good.

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Something in the drive line is loose or has lost a bolt etc and it takes a certain amount of torque to get it vibrating, hence it appears above 35. Closely inspec the driveline to find it.

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Have the u-joints checked for serviceability. Check rear engine mount is in good condition check that the rear springs are still at the right height. You appear to have a harmonic vibration that is cause by worn u-joints or incorrect drive line operating angles from the angle between the rear of the gear box and the diff pinion having changed . Check the drive shaft for balance as sometimes the balance weight can throw off.

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I have a bad vibration that appears to be coming from the rearend. Started out only at certain speeds now it's all the time. Stops when you let off the gas. Shakes the entire vehicle.

A couple of things to check. It may be a wheel bearing, shock, cv joint, or a very common cause is that one or both of your back tires are worn irregularly. This causes the car to shimmy and get progressively worse as you have explained. It usually happens on the front end of the car, but can occur in the back.

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Why does my 2005 Corolla vibrate at idle?

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1995 mustang while driving sometimes it feels like I'm driving over rumble sticks on road. What may cause this

Driveline vibration- worn U joints, normal wear in transmission, wheel bearings, etc.

Depending on speed when it appears and disappears and how wide the throttle is at the time can all affect the appearance of it

If you only bubble balnced your tires, it could be that simple. Dynamic balancing should eliminate most of the problems.

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1990 Cadillac deville was running fine today, then after a long drive uphill it began to vibrate/shudder when accelerating from stop or low speed if gas applied strongly. No problem at high speed, just...

I would check the fuel pressure, sounds like a fuel delivery problem...possible dirty fuel filter. The vibration is probably due to a missfire. Have you had had a tune up lately? Check for vacuum leaks. I hope this helps.

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I just bought a 96 lasabre and it wobbles, the previous ower said something about it being caused by the brakes or rotors, please help

if you get a pulsation/vibration when you apply the brakes than the brake rotors are warped. If the pulsation/vibration can be felt as your driving without applying the brakes than some common causes could be a tire out of balance, a separated tire, or a bent wheel,

I’m happy to assist further over the phone at

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