4L80E Transmission Problems

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4L80E Transmission Problems

Home > Discussion Forum > Mechanic's Corner - Transmissions

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All Messages in Thread	Author	Date
Re: 4L80E Transmission Problems	melissa	5-29-07
My husband has a 91 gmc 2500 sierra 2wd, the transmission went out the other day, it would not go into gear, We went to the junk yard and got a used 95 year 4L80E, but the yoke was not on the 95, is there repacement parts for yokes for a 95 and would a 95 replacement part fit a 91, Also If the vehicle doesn't go into gear what exactly is wrong? is it the torque converter, the filter,or the whole transmission?
Re: 4L80E Transmission Problems	been there	5-31-07
No tail shaft interchange available. go back to original tranny and make sure you have a good electric connection in your wires. if you do put a new computer in your truck. i went through five new and rebuilt trannies and three reputable mechanics before oe finally found the trouble. he put a used computer in just to make sue it wasn't the computer. guess what? hope this helps you. been there in texas
Re: 4L80E Transmission Problems	Roger	9-21-07
Drives good in thrid/overdrive.no reverese and 1st and second are shifting real high.changed 1,2 and 3,4 shift solinoeds and filter.1995 gmc 1 ton 3500 2 wheel drive.I think a band or something broke.I can drive it and has all the power it always had.
Re: 4L80E Transmission Problems	coreys	2-17-08
I have a 1996 gmc sierra 2x4, transmission works presently, its only shifts to 3 thousand rpm for the first gear then goes fine, shifts very slow also, i was told it could be the gear ratio, also when i do a lot of city driving stopping and going time to time the transmission will shift hard. if anyone can give me some tip of what it could be it would help a lot.mechanics are guessing..