heres the problem I'm having and I cant figure it out. Driving there is no vibrations or noises but when I go to slow down by letting completely off the gas I get kinda like a roaring sound coming from underneath the blazer. It sounds like its coming from the middle of the blazer. I noticed that as I go to slow down that if I don't let completely off the accelerator I don't get the sound. I had the differential checked out. there was no slack in the ring and pinion gear and it was full of dope. it doesn't make a sound on take off or while driving , it only does it when I let completely off the accelerator. Please help with this issue I'm having. Thank you . I don't know if this will help but my rpo is g80 and I was told I have 4:10 gears. my blazer is all factory set up 1 owner with 186000 miles.

 

You already have a reply to this issue in your original thread, 1987 blazer 4wd. roar. Please do not double post, it is against Forum rules.

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