Chevy G20 Cargo Van - High speed problems

[sznsx]

Hello All!

Chevy G20 Cargo Van 1992

I've been using my van daily for the past 10 years. For as far as I can remember, while traveling at a STEADY speed of anywhere between 30 - 40mph, the van starts viberating somthing like if you are on a Coney Island roller coaster. If I accelerate to go faster or if I deccelerate to go slower, the vibration disappears. This happens when the engine is under pressure or going uphill. I think the vibration is more concentrated from the rear of the van.

Any ideas would be great! Thanks!

[mrgcav]

Have your differential checked real soon.

Originally Posted by sznsx

Hello All!

Chevy G20 Cargo Van 1992

I've been using my van daily for the past 10 years. For as far as I can remember, while traveling at a STEADY speed of anywhere between 30 - 40mph, the van starts viberating somthing like if you are on a Coney Island roller coaster. If I accelerate to go faster or if I deccelerate to go slower, the vibration disappears. This happens when the engine is under pressure or going uphill. I think the vibration is more concentrated from the rear of the van.

Any ideas would be great! Thanks!