The computer says transmission fluid hot 98 degrees does this mean my transmission is slipping on my grand prix 2005?

Yes, your transmission cooler is inside of the side tank of the radiator. If your coolant looks like pink sludg, then there is a good chance that you need your cooling system and trans fuid flushed and a new radiator installed.

It isn't when the engine gets hot, it is when the transmission fluid gets hot that the slipping starts, due to wear of the clutches and gears inside the transmission.
First, check the fluid level to make sure it is full. If it is low, bring fluid level to full and see if that helps.
About all the owner can do with slipping automatics is trying a transmission fluid and filter change to see if transmission revives and stops slipping. The bottom pan is removed, fluid (about 6-8 quarts) is drained, and a new filter is installed before the pan is replaced with a new gasket, sealed up, and fresh fluid added. Sometimes it helps. Sometimes the transmission is worn too bad to help, and you are left with looking for a replacement transmission.
Check the fluid level first. Good luck.

Well, since the transmission in your vehicle is computer-controlled, I think the FIRST step in diagnosing the problem should be to ask the Powertrain Control Module what is going on.

does this vehicle have a transmission oil dip stick or not ,if no dipstick then its a dealer only job

For car running hot and overheating issues, I suggest to you go through this help links. Click this link below and go through the troubleshooting procedure to take care of the problems: ----Car runs hot? http://howtobyme.blogspot.com/2011/11/car-runs-hot-in-traffic.html
-----------All types of car overheating problems and troubleshooting?

http://technoanswers.blogspot.com/2011/11/all-types-of-car-overheating-problems.html
Car freeze overnight and started overheating while driving?http://technoanswers.blogspot.com/2012/01/car-freeze-overnight-and-started.html-----------Engine Overheats and heater blowing cold?

http://howtobyme.blogspot.com/2011/11/engine-overheats-and-heater-blowing.html

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Car overheats and Air blows hot at idle?
http://howtobyme.blogspot.com/2011/11/car-overheats-and-air-blows-hot-at-idle.html
--------overheating? http://schematicsdiagram.blogspot.com/2011/12/buick-century-overheating.html
----------Car engine Overheats and transmission starts slipping?http://schematicsdiagram.blogspot.com/2011/12/car-engine-overheats-and-transmission.html
----------This details will help.Thanks.

CHECK FLUID LEVEL SOUNDS LIKE ITS LOW ON TRANSMISSION FLUID.

there is a stick under the hood that say transmission on it give these websites a try www.alldatadiy.com and www.autozone.com wish you the best of luck Michigan Man.

195-235 degrees F

Hello David.
Your Pontiac transmission uses Dexron 3 fluid.

KL

you may change the filter and fluid, but in most cases it will not do any good. Find a good trans shop to check it out.