Pulsing vibration on the freeway - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Mrturner1 · 04-13-2016, 06:05 PM

Hey guys,

So I have a 1970 C10, 350/400th and stock rearend. When I'm on the freeway (or anytime I'm driving over 50-55mph) there's this vibration that starts off real slow, as in, it vibrates for a second or two sometimes a little longer and then stops for a second or two, then vibrates, then stops and so on. As I pick up speed and get around 60-65mph the vibration is faster, as in, it vibrates for a second then stops for a second, then vibrates for a second, you get the point.

What could be causing this? I thought driveline angle or something like that, but the angle is fine. The truck isn't lowered or lifted at all. Any ideas?

04-13-2016, 06:05 PM	#1
Mrturner1 Registered User Join Date: Nov 2015 Location: Colfax California Posts: 1,644	Pulsing vibration on the freeway Hey guys, So I have a 1970 C10, 350/400th and stock rearend. When I'm on the freeway (or anytime I'm driving over 50-55mph) there's this vibration that starts off real slow, as in, it vibrates for a second or two sometimes a little longer and then stops for a second or two, then vibrates, then stops and so on. As I pick up speed and get around 60-65mph the vibration is faster, as in, it vibrates for a second then stops for a second, then vibrates for a second, you get the point. What could be causing this? I thought driveline angle or something like that, but the angle is fine. The truck isn't lowered or lifted at all. Any ideas?



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