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Post Info TOPIC: which is the return transmission cooler line?


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which is the return transmission cooler line?
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im flushing my transmission, i own a 94 gmc sierra, 4.3l and i was wondering which line is the return line so i can drain it? is the top line or the bottom line on the left of my radiator? anyone know??



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Read your PM think you would be better off having your engine flushed where they have a T-Tec ( that would be a Good Year or Shell Service Quick Oil Change ) you never mix two differn't chemistry's. Drain your transmission add new transmission fluid than go to www.auto-rx.com click on transmissions and follow instructions (in your case keep 6 ounces of Auto-Rx in for 1500 miles) last thing you should be worried about is what or where the return line is.

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well my truck is shifting real hard going into second gear, i went to a lube place and flushed my trans with their machine, but i didnt get a new filter just the flush, it was still shifting hard, so i put some lucas in last week, its not gettin any better, it actually feels like its shifting harder now, then i was looking through some forums and i over heard people talking about arx, so i ordered some. it should be in this week so i was just asking cuz i didnt want to mix the two together and have a negative effect.. also i didn't want to pay $100 bucks to flush it again so i read about just flushing it myself... what you think??



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If you don't clean out the previous chemistry than Auto-Rx will. However you want Auto-Rx to also clean your transmission . I can't guarantee what results your going to get without doing another flush. Remeber Auto-Rx is real chemistry not jus a solvent with an additive package. Your call.

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In general it is never a good idea to add two different additive chemistries within the same sump. And I can certainly feel your pain with respect to the cost of the previous flush and fill of new fluid. Lucas has a couple different products and I assume that likely added an oil stabilizer type product to your transmission, as opposed to a stop leak product. Neither of these two types of chemistries would have much of an impact on cleaning any shifting valve deposits. Of couse shifting issues could be solenoid related or electrical with respect to hard shifts as well.
I would recommend doing a pan drop to drain out about 50% of the trans fluid. You will need to be careful not to make a mess and just crack the corner of the pan cover so that it drains out in a controlable and capturable flow. After all available has drained out, you can remover the pan cover and check your filter. I think on your model it is just a mesh screen. You can hand clean it and wipe the pan cover, as they are usually magnetic so as to capture wear metals. Then merely fill the transmission back to the fill line. You addition of ARX will be 6 fluid ounces or 1/2 bottle. Take plenty of time to get the fluid level exactly right. And recheck after the first operation. There will be a sequence in your owners manual for proper dip stick reading.

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cool cool, ok so yea don't put in arx till i get the lucas out.. will do.. i just wish i would have found out about arx sooner cuz a couple weeks ago i paid to have my trans flushed cuz of the shift problem, didn't help it, so basically i just wasted hundred bucks cuz im about to flush all the new fluid out cuz of the lucas.... but all is well, i have high hopes for the rx so if my truck gets better im still happy, thanks for the help and answers guys, much appreciated!!! ill be sure to post wat happens when i get done with the experiments!!



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hard shifting can be from high line pressure due to several things. Also a broken accumulator spring can do the same thing. These 4L60-E's definitely have some issues as they age, especially if they are not maintained well or are abused. Auto-Rx certainly cannot hurt anything, but if your trans has one of these types of issues, repair or rebuild of the unit may be necessary to actually fix the problem. Nevertheless, I would try to do some good with the Auto-Rx first. I have had great results in many automatic units, including my own 700R-4.

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