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UncleMan
Lv 5
UncleMan asked in Cars & TransportationCar MakesChevrolet · 9 years ago

1991 3/4 ton Chevy symptom?

Getting a vibration when accelerating in all gears between 2000 and 3000 RPM. It goes away when I let off the gas. Seems to be coming from the rear end, but I'm not an expert. Any help will be appreciated. 4X4

Update:

The u joint at the end of the drive shaft? Flexing? Inside the cradle at the opposing end of differential yolk? Well, you never know who you are talking to. Maybe coming from the out put of the transmission?

Update 2:

With answers like these, maybe I should consider myself an expert.

4 Answers

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  • onebadpooh2001
    Lv 5
    9 years ago
    Favorite Answer

    sounds like one of the rear u-joints are rusty and not flexing.

  • Two Lane.
    Lv 7
    9 years ago

    Sounds like a bad rear U-Joint to me.

  • ?
    Lv 7
    9 years ago

    Visit some of the Chevy truck forums for technical help from guys that fix what they drive.

  • (A)
    Lv 7
    9 years ago

    Could be a cracked piston.

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