What should I replace on a used 2004 4t56e

**rumrun999** · 01-15-2014

Chris from Wisconsin again. Thank you all for your input on my last question. I have found a used 4t65e with 84,XXX miles from an Impala with the 3.8l that was a rear hit. With the tranny out, should I replace Anything prior to putting it in? I greatly appreciate your input.

**Scottydoggs** · 01-15-2014

put it in the car, then drop the pan and filter, add 8 qts of new tranny fluid and a new filter. call it done.

blow your tranny lines out as well as the tranny cooler in your cars rad. you dont want any of your old fluid getting into the new/used tranny.

**LeadfootCJ7** · 01-15-2014

I would consider pricing some of the known things that can go wrong in the valve body and replace those before installing it. Triple Edge Performance can help you with those.

**Fivefingerdeathpunch** · 01-15-2014

What year is your car??

Because that transmission if you are saying its from a 2004 might not even work with your car.

**dsmuts** · 01-15-2014

^^^^This

**l67ss** · 01-15-2014

Front pump seal is a good idea. On the year thing you can change the electronics and use it in a 2002 and older car

**rumrun999** · 01-16-2014

Sorry about that, I have a 2004 Grand Prix (also, it is a 4t65e, not 56). Huge thank you on the tips, I completely forgot about blowing the lines out and the front pump seal.

**dsmuts** · 01-16-2014

They may have different gear ratios. I'd check that out first

**l67ss** · 01-16-2014

VERY good idea. I didnt check when i 4t65 swapped my car and with the cel it does all kinds of retarded things. Good tip.

Originally Posted by dsmuts

They may have different gear ratios. I'd check that out first

**rumrun999** · 01-17-2014

[QUOTE=They may have different gear ratios. I'd check that out first

From what I have found, there is an FR-2 and an FR-9 gear code. Do these numbers sound correct? Where do I find the ID tag on the transmission to verify?

**dsmuts** · 01-17-2014

There are I think 4 different gear ratios 2.86 2.93 3.05 & 3.29

**l67ss** · 01-17-2014

I know the impala will have either 3.05 or 3.29 gears. I thimk fr9 is the 3.29 ratio. Keep in mind youll need to use your original neutral safety switch

**Shmoke** · 01-18-2014

Don't forget to install a Sonnax P/N 84532-01K. An aluminum pan is also nice for the drain plug and the added cooling.

http://www.grandprixforums.net/showt...74#post1110374

**rumrun999** · 01-18-2014

Originally Posted by Shmoke

Don't forget to install a Sonnax P/N 84532-01K. An aluminum pan is also nice for the drain plug and the added cooling.

http://www.grandprixforums.net/showt...74#post1110374

Man, All you guys are awesome (in a guy way), I hope someday I have a bit of knowledge to return the favor, THANK YOU SO MUCH!!!!

**rumrun999** · 01-18-2014

Man, All you guys are awesome (in a guy way), I hope someday I have a bit of knowledge to return the favor, THANK YOU SO MUCH!!!!

**rumrun999** · 01-18-2014

Originally Posted by l67ss

I know the impala will have either 3.05 or 3.29 gears. I thimk fr9 is the 3.29 ratio. Keep in mind youll need to use your original neutral safety switch

The salvage yard confirmed it is a 3.05 tranny. Do you know where to look on my GP tranny for an ID tag?

**l67ss** · 01-18-2014

You can check your trunklid for rpo codes. Theres a tag on the tranny bit it needs to b oit to read it

**l67ss** · 01-18-2014

Im guessing it has 3.29s tho

**GMR Badass** · 01-18-2014

L67SS....what front pump seal are you talking about?

**l67ss** · 01-18-2014

Lol i think the parts store calls it a torque converter seal

Thread: What should I replace on a used 2004 4t56e

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