Question about 1996 GMC Sierra

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1996 gmc serria 1500 5.7L transmission made a loud grinding noise followed by popping and then no fwd in first second or 3rd gear auto transmission, reverse works fine and truck idles and revs as in neutral when in drive.

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It sounds like you may have a broken drive drum or planetary gear set inside the transmision. I believe you have a 4L60E transmission in this vehicle and I've seen several failures similar to this which require the transmission to be removed and repaired. It's always worth a good look at everything on the outside first just to be sure but I think you probably have an internal mechanical failure of some type

Posted on Jul 08, 2010

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Posted on Jan 02, 2017

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