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91 I series with the 4T60e tranny problem


J.r. Patton

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the tranny is whining pretty loudly at times it shutters in 1st and wont shift past 2nd. then other times its great! some say the filter could be clogged. I know its running about a year old filter and fluid. Im just looking for opinions on what to do with it or possible solutions

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if it runs pretty good some of the time... lets get a bit more info. when does it act the worst? when cold, when hot, after long drives, etc?

 

what type of fluid or filter did you use? I am now using vavoline maxlife in the gallon jugs which is designed to meet dexron VI specifications, (though their viscosity is slightly higher, iirc) wihtout the price tag of being licensed.

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Jiffy lube serviced it with dexron 6. it does its best when its cold.. I can drive it about a mile then it fucks up.. but today I drove about a mile and it messed let it sit for about 30 minutes and it drove perfect all the way back to the house.

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Jiffy lube? did they really change the filter or do a crappy powerflush only?

 

Does it have a stock transmission cooler? some 3800 cars 91-93 had it. if not, go to a j/y and get one from anything 91-93 that has a 3.4 or 3.8, as it is a direct bolt on.

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