Question about 2000 GMC New Sierra 1500
THe 4l60 is an electronic produced shift trany, It sounds like the place to start, is to see if you can shift it manually. Starting out in first and work your way up as the vehile speed increases. I have a question for you. Did this problem occur all at once or over time? I would say most common reason is shift solinoid problem, But could be many other reasons like, sticking valve in valvebody, bent or worn linkage, improper fliud pressure to pistons, etc. with your help and imput we can probably narrow the problems solution down.
Posted on Feb 14, 2012
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Posted on Jan 02, 2017
no sound like 3 and 4 are gone.you will have to replace the tran . good luck
Posted on Apr 17, 2009
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