Mechanics

VIBRATION

2004 Chevrolet Avalanche • V8 4WD Automatic • 45,000 miles

2004 chevy avalanche, after going into 4th gear there is a bad vibration, stops when pushing down on gas and gearing back down
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Randy Smith
December 7, 2010.



What speed and rpm is the vibration at?

Tiny
Fixitmr
Dec 7, 2010.
It vibrates between 45 and 55

Tiny
Randy Smith
Dec 8, 2010.
Rpm are around 19 or 20 thousand

Tiny
Randy Smith
Dec 8, 2010.
Are you running oversize tires? 1900 is a fairly low rpm and I noticed my own van has a shuddering vibration as the rpms drop and it is still in overdrive. It's caused by the gear ration being to high and the added strain of firing against this impossible load ratio turns up as vibration.

Tiny
Fixitmr
Dec 9, 2010.