Question about 1996 Pontiac Grand Am

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Trans fluid in radiator tray - 1996 Pontiac Grand Am

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montehammons

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You are leaking transmission fluid from either the fluid cooling lines that run from transmission to a separate reservoir in the radiator, or leaking from the reservoir itself. Hopefully, it's only the lines and may just need tightening to stop the leak.
There are two lines to the radiator's reservoir. One brings fluid from transmission to the reservoir, and a return line back into the transmission. Probably located on driver's side of the radiator, one will be near top of radiator, and one near the bottom. Small copper or steel lines that may also turn into rubber lines. Clean the area well with rags to locate the leak. Will probably need to have the car running to make it leak, while looking for it. You could also take a wrench and try tightening the fittings at the radiator, and tighten any rubber hose clamps that you see. If it's not the lines or hoses that are leaking, then the radiator may need to be pulled off for repairs or replacement. But 9 times out of ten, it is a leak from one of the lines.
When fixed, don't forget to check your transmission fluid level. Or keep adding till it is fixed.

Posted on Mar 02, 2012

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Josh

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SOURCE: transmission fluid & radiator fluid

Antifreeze and transmission fluid don't run together any ware, but are both cooled by the transmission. There are coils inside the radiator that the transmission fluid runs through to be cooled. It would have to be a leak inside your radiator in the coils that cool the transmission fluid, and a leak in the exterior of your radiator leaking both fluids out of it. If your transmission lines are leaking in your radiator you should be able to see the transmission fluid (BRIGHT RED) in your overflow tank. Also the puddle under your car should be a red and green mixture kind of going everywhere. If they are to different leaks then you would be looking for a transmission leak and a coolant leak. Also check your oil and make sure that you don't see anything unusual looking about it. If you find that you have transmission fluid in your radiator I would contact whom ever replaced the lines for you, they should have been able to see this was the problem. Good luck hope this helps you narrow it down to the actual problem, if you have more questions reply to this post I will try to assist you further.

Posted on May 25, 2011

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If the trans and radiator fluids mixed, which can happen if the radiator tanks leak between chambers, then your trans is corroded inside. The radiator can be tested if you can not tell by looking at the Antifreeze. The bottom radiator tank is suppose to be separate and as long as it leaked on the ground, the 2 fluids did not mix.

Your biggest problem now is to determine whether the trans is any good without spending money to fix the radiator. If you take out the Radiator, some places will test it free. Ask them about whether the 2 fluids mixed.
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Your trans fluid oils all the bearings and bushings and pumps inside the trans. If the engine is not turning, the trans will not burn out its parts. If the engine is idling, the trans will burn out without fluid.

I attempt to give the cheapest Solution to your problems. You can only test the Radiator separately by removing the radiator or having the vehicle towed in. There is no way of knowing if the trans was damaged until fluid is restored to the trans. If the 2 fluids mixed, it is a bad thing. If the 2 fluids were not mixed, then it is better for the trans, but bad things happened to the trans without having fluid in it. Sorry I can not give you better news.

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