Which Transmissions?

[j_39x80]

As I am in the market for a used car I have been looking at a couple of Impalas and I have heard that there is a certain transmission that has lots of problems and that I should watch out for. Which years and which transmissions should I watch out for and which are the good ones?

[Pat_OD]

it doesnt seem like the year has anything to do with it from what i've seen but i know the tranny attached to the 3.4L has a lotta problems. It may hhave something to do with what factory it comes from.

[impalaguy2]

Originally Posted by j_39x80

As I am in the market for a used car I have been looking at a couple of Impalas and I have heard that there is a certain transmission that has lots of problems and that I should watch out for. Which years and which transmissions should I watch out for and which are the good ones?

that's not true. both engines ues the same 4T65E trans with different electronics. (as well as most W body GM's like the bonneville, GrandPrix, Lesabre, Regals and more)
if u want a heavy duty trans u can try and get the police package that comes with the 4T65E HD.

[Pat_OD]

the 4T65E HD only fits the 3.8L engine at least this is what a few mechanics told me

[MCO_Death]

Originally Posted by Pat_OD

the 4T65E HD only fits the 3.8L engine at least this is what a few mechanics told me

Yes, usually its only used on the Supercharged 3.8's with most cars, but the Impala Police Package came with it as well. As best of a tranny as you'll get for the Impala... I am not sure if the LS's came with them or not, but the 3.4 certinly did not.

As for durability... Mines taken 158,000 miles of what i'd say 'hard' driving.