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new to this site...i have a question

06GPGXP33

06GPGXP33

New member
hey everyone. i recently just bought a 06 grand prix gxp a week ago. i had read alot of ppl's reviews on these cars that the trannys over heat...any help on avoiding that expensive fix?

thanks
 


hi.

Well I wouldnt say they overheat, but the for some reason the 04+ cars like to run alot hotter than the previous years. I am not sure if the size of the coolers were made smaller or weather the sensors on the newer models like to read weird.

From what I hear the 04+ cars run around 220-230 temp after completely warmed up. Which isnt that hot, but that temp should be right around 200º for perfect temp and fluid life. Because the coolers on the rad it should be right at what the coolant is running. I havent heard of a transmission failing yet because of how warm they run, but just know at 225º or higher the fluid life is cut down a ton to maybe even half its normal life.
 
ok. i plan on getting the tranny flushed and a new tranny filter and may plan on buying one. any other thing i should be aware of with the 06 gxp?
 


Double check everything after installing it. In fact, put cardboard under the car for a few days after you install the external cooler to make sure there's no leaks.
 
Nixon said:
Double check everything after installing it. In fact, put cardboard under the car for a few days after you install the external cooler to make sure there's no leaks.
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ok will do. any other good mods for these 5.3's?

i have a k&n and an exhaust...
 


I wouldn't do anything, you will cause more problems messing with it. Look up tripledgeperformance for common tranny problems. None of them are overheating.

Who told you the tranny overheats.
 
tranny does run hot. an aftermarket cooler is a great start. doug thorly headers are available for a pretty penny. not many intake choices out there. there are alot of ls2, ls6 parts that swap over with little modification. triple edge performance does good trans builds, cartuning makes a turbo kit for our cars that makes rougly 500 hp. one of the cheapest things you can do right out of the box is wrap the crossover pipe with heat wrap. reduces the underhood temps quite bit.
 
sseilmnop said:
I wouldn't do anything, you will cause more problems messing with it. Look up tripledgeperformance for common tranny problems. None of them are overheating.

Who told you the tranny overheats.
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When's your next comedy show? :th_laugh-pointup:

These suckers even overheat on stock GTP's.
 


mine ran between 195-210 in the interstate at 75 and around 220 in town. thats why ive put in a trans cooler. brought the temps down to around 170 everywhere.
 
f3racer said:
mine ran between 195-210 in the interstate at 75 and around 220 in town. thats why ive put in a trans cooler. brought the temps down to around 170 everywhere.
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Same here.

Even with a 180* Tstat i was seeing temps not real far off from that on the stock trans cooler. Went external and unless i'm beating the living snot out of the car my temps simply don't go above 170-175 range.
 
sseilmnop said:
I wouldn't do anything, you will cause more problems messing with it. Look up tripledgeperformance for common tranny problems. None of them are overheating.

Who told you the tranny overheats.
Click to expand...


just about every complaint conversation on this car was about the tranny over heating and everything. even the gm mechanics described it as over heating.
 
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