Question about 2000 GMC Sierra

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Transmissions Coming home from work I came up to a stop sign and when I took of I felt something like gears stripping and the moter seemed to rev here to switch gears. When I got home i came to realize that I have no reverse. I changed about two weeks ago my u-joints because I thought they were banging as they do. That did not fix the problem. Is the low spline in the tranny seemed stripped or do you feel like there is more to it. 2000 GMC 1/2 4x4 short bed

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  • outlawtruckr Feb 13, 2009

    i have a 1999 1500 sierra ,appears to be doing the same thing,my wife drove it home,heard sumthing load,no reverse,when in drive,it wants to go on its own til you try to give it gas,then it wont move,just grinds[two or four wheel]but trans seems to lock wheels when in park,[i thought maybe it was the]...better to have transmission repaired?or replace it....what trans. will interchange?ty



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1500 series truck uses the 4L60E transmission,and a common failure on that model is the reverse sun shell.The shell has a collar with splines that engage splines on the sun gear.The shell either strips the splines,or breaks the collar,.either way,the shell is inoperative and needs replacing.Aftermarket transmission parts businesses sell a heavy duty version of this reverse shell,called the beast.It is made of much thicker steel and won't strip or break.

Posted on Sep 03, 2008


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