GM 100K mile normal service ATF change

El_Schaf · Apr 22, 2010

Does anyone know if this is incredibly ambitious?

I'm at 92K on my grand prix and will be changing next weekend, I don't think I'm having any problems, but I'm starting to rethink not changing it even earlier. The owners manual say 100K for normal service, and I'm guessing that being over 90K in just over two model years is the normalest of normal service (according to the OEM, anyway)(and I know "normalest" is not a word :-D)

FL_Rob · Apr 22, 2010

Did you buy it new in 07' then drive it for 3 years? thats 92k miles in 3 yrs? thats rather extreme service if you ask me.

willix · Apr 22, 2010

You are ok anytime in the next 20K. Some folks never change it or even think about changing it.

El_Schaf · Apr 22, 2010

unfortunately, I bought it in december 08 with under 30K on it. As far as devaluing a car, I would consider it idiotic service, however as far as "normal" vs. "severe" it should be normal.

El_Schaf · Apr 22, 2010

OMG, i cant imagine not changing it....considering I recently jumped on the Supertech and drain plug bandwagon, I wish I had been changing it much more frequently. Im going to have to drive this car for a LONG time before I get the value I want out of it.

sciphi · Apr 22, 2010

Change it. It's not going to hurt anything, and will help that 4T65 live a long life.

hate2work · Apr 22, 2010

You think being over 90k in just two model years is normal? I guess it could be.... Do a flush and take pics for us

GMBoy · Apr 22, 2010

Be sure to use Dexron 6 - ONLY.

bigbird_1 · Apr 22, 2010

The time frame of the accumulation is not the most important issue here. The question is was this mostly highway mileage which is the easiest on a transmission or was it stop and go urban mileage with lots of idling and possible running hot? Any trailer towing involved? Any roof rack with bikes or luggage? Any mountain driving? You get the idea. If it's severe service, take the day off and change it tomorrow. If it's regular service, then change it before the summer heat..

Benzadmiral · Apr 23, 2010

I had my Buick's ATF and filter changed at 50K miles, about four months after I bought it. Somehow I can't believe any fluid is really "lifetime."

FL_Rob · Apr 23, 2010

Originally Posted By: Benzadmiral
I had my Buick's ATF and filter changed at 50K miles, about four months after I bought it. Somehow I can't believe any fluid is really "lifetime."

Exactly,..... If it's lifetime why would it eventually turn brown?Ive had ATF stay red and last a long time but LIFTIME?
GM engineering is good ,but it ain't Skunk Works.

GM 100K mile normal service ATF change

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