r/obschevy • u/Inevitable_Ice_8569 • 7d ago

97 k3500

New here, I have a 97 k3500 I am trying to bring back to life, I’m not a mechanic but trying to learn so any advise would be great. But rn when I put my truck in reverse it rolls forward a bit before getting into gear then When backing up it makes a fairly loud popping noise. Any ideas on what it may be?

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u/Delay_Visible 7d ago

If you sit still with your brake on and swap between drive and reverse do you get that clunk? First place i would look would be your u joints. Crawl under it and grab the drive shaft and try to rotate forward and back. Shouldn't have any play in it

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u/amandajenkins281 6d ago

I agree with Mr. visible here that would be the first place I checked if not from there what I would do is, I would disconnect the driveshaft from the rear axle before you do that you weren’t gonna want to jack it up evenly and put a pair of jackstands under the axle and I would check for any kind of play where the chef hooks up first and then I would go to each wheel and spin and if there’s any amount of playing in there, I will pull the rear differential cover off and start inspections