The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Pulsing vibration at around 55-65 mph

**DANTIP** · 06-15-2020, 04:44 PM

I had a vibration in a 3/4-ton '72 that would come on around 55 and was gone by 63 or so. I had several "Experts" try to fix the problem including rebalancing the driveshaft, etc.

Later, I found a super nice Dana 60 rear and had it serviced and installed in my truck. The vibration was somewhere in the corporate rear. Pinion bearing maybe?? I don't know, but it's gone and I'm happy!!

Good luck!

06-15-2020, 04:44 PM	#88
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,890	Re: Pulsing vibration at around 55-65 mph I had a vibration in a 3/4-ton '72 that would come on around 55 and was gone by 63 or so. I had several "Experts" try to fix the problem including rebalancing the driveshaft, etc. Later, I found a super nice Dana 60 rear and had it serviced and installed in my truck. The vibration was somewhere in the corporate rear. Pinion bearing maybe?? I don't know, but it's gone and I'm happy!! Good luck!