Coolant is getting into the ATF possibly through a hole in the oil cooler
Fluid is overfull, or there is water in the fluid.
Having too much fluid will cause your transmission fluid to look foamy
No, foaming is an indication that there is contamination or the fluid is overfull.
If the fluid is full of bubbles or is foamy, the transmission is probably overfilled with ATF. Other causes include using the wrong type of ATF or a plugged transmission vent. REF: http://www.aa1car.com/library/atf.htm
White and foamy trans fluid is due to either being overfilled, or water in the oil. It can also be a bad crank seal.
If the fluid is full of bubbles or is foamy, the transmission is probably overfilled with ATF. Other causes include using the wrong type of ATF or a plugged transmission vent. If the fluid level is too high, the fluid can become mixed with air (aerated) causing shifting problems, slippage and noise. A real no, no, is to overfill a transmission. Check the level when the transmission is hot, on level ground. On most vehicles this is done with the engine idling and the transmission in Park. Check your owners manual for the proper procedure on your Suburban. Moving the gear selector thorough each gear position prior to checking the level will help assure an accurate reading. The fact that the fluid is foamy, may prevent you from getting an accurate reading. If so, then I would suggest you drain enough fluid out to be able to read the level accurately. Your transmission uses Dexron 3 fluid. If any other fluid has been added or you suspect the wrong fluid has been added, have a complete fluid change and flush performed. Otherwise you may end up destroying your transmission.
Low fluid level could be one cause, more likely condensate from extreme temperature conditions or a missing dipstick. AUTOMATIC TRANSMISSION FLUID WILL LOOK FOAMY IF CHECKED WHEN WARM. THIS IS NORMAL. YOU SHOULD HAVE A QUALIFIED TECH INSP/CHANGE THE FLUID IF IT HAS NOT BEEN DONE IN THE LAST 30K MILES ANSWER Some oil additives have been known to 'foam'. So if you added an additive to your tranny that could also be a cause. ANSWER Sure there is not some water into the trensmission?. Get qualified help to inspect.
Yes absolutely.
water causes a chemical reaction which causes it to foam and become slippery
Foamy liquid that exits the vagina during a female orgasm.
The fluid is burnt and has been overheated or in service too long. You may come out by draining the fluid from a hose connection at the lowest point of the PS system. Close drain. and refill with transmission fluid. Idle engine for 20 minutes and ocassionalyy turn steering wheel full left and right. any improvement? Drain fluid again and fill again with trans fluid, Improved? Replace with PS fluid. I've used transmission fluid in my Chevy van PS for twenty years but can't say you should do the same.THE FLUID DID NOT TURN BLACK IT HAS TURNED TO A LIGHT COLOR PINK BUT THE OTHER PROBLEMS YOU HAVE DESCRIBED IS DEAD ON. I WILL TRY WHAT YOU HAVE PRESCIBED. I WILL POST THE RESULTS WHEN I CORRECT THE PROBLEM.what ever you do DONT use tranny fluid in the power steering you must use PS fluid only unless you want to go through the proces of flushing your whole system repetedly because if any transmission fluid gets mixed with your PS fluid it becomes foamy and you will then have air in your lines.Ford specifically specifies Mercon V transmission fluidfor use in the power steering system.See "Related Questions" below for more
Have you checked the fluid? Has it been run low on fluid in the past? Check for leaks in the fluid return lines, you could be sucking air into the system. Is the fluid milky or foamy? milky would be an indication of moisture and foamy would indicate the air leak.