I bought a 1991 GMC Jimmy 2Wheel Drive Automatic transmission. I drove it home about 70 Miles and parked it.

5

Asked by Dec 16, 2016 at 09:28 PM about the 1991 GMC Jimmy

Question type: Maintenance & Repair

I knew going into this transaction that Reverse was inoperative but didn't really care.  I I put a new Battery and a Serpentine belt on.  When I started it on Monday I let it warm up while putting all my equipment for the days work inside which took about 45 minutes.  It drove to work and home with no troubles which put about 100 miles onto it.  Tuesday morning I started it up and drove off.  I got about 3 miles down the road and it started slowing down going up a short hill.  I made it to the top of said hill, turned around and got about one mile back toward home and would not go any further.  Upon examination I discovered that even after running for almost an hour the transmission fluid is still way over full by about a full quart.  Suggestions, please?

2 Answers

80,045

Use a suction gun to remove the excess ATF but when one gear is going out the rest will follow before too long.

102,415

Drop the transmission pan and see how many pieces of tranny are laying in there, if there is a lot then the trans will have the be replaced, if not then change the filter and put the pan back on then pour in a quart of TransX and refill the tranny start it up and just let it idle in park, for a few minutes this will give the TransX time to circulate, then put it in drive and see if something happens, if it doesn't then for sure the tranny needs overhauled, if it does start to work then carefully drive it around slowly allowing it too shift softly on its own then return and park it overnight and see how it work the next day, I had a GM car that everyone said the tranny was shot, so I did just what was mentioned above and within a few days (I Think) it was shifting normally, but I knew that someday it would fail, but it never did for the year that I had it, gave it to a guy that could get a job if he had transportation, told him what I had done and it might not be long before it failed, but he didn't care he just wanted to get to work, saw him a little over a year later and he was still driving it and never did have anything done yet to the tranny, so you never know, once you get things cleaned out and the pressures start returning you never know just how long a hurt tranny will last.

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