ok i asked some questions about the 4T65E trans. here before and now because of two friends telling me i'm wrong that i don't have that trans. in my car. how can I tell what trans I do have in my chevy ?????? It's a 2000 chevy impala LS with the 3.8 engine . so where do I look for tag's or numbers that will identify the type of trans I do have ???? I'm asking because I need to work on it . thanks everyone ..

 

The 4T65E was the transmission for the 2000 Impala
What transmission are your friends stating it has ?

From Wikopedia
4T65-E
The 4T65-E was introduced to replace the 4T60-E in 1997. The 4T65-E included a larger 258 mm torque converter for some models and many other changes to improve reliability. It is able to handle vehicles up to 6500 lb (2948 kg) GVWR with up to 280 ft·lbf (380 N·m) of torque. A number of final drive ratios are available, with many distinct models. Starting in mid year 2000 models, all 4T65-E models received an upgraded valve body. Starting in 2003 the internal electronics were changed, hardened 4th gear shaft, ratcheting sprags for input and third gear were added. The last application was the 2011 Chevrolet Impala as GM has transitioned to the 6T70 family transmissions for 2012.

2.86:1 or 3.05:1 M15
Buick LeSabre
Chevrolet Impala LA1
Chevrolet Monte Carlo LA1
Pontiac Bonneville FQ3

The 4T65E-HD was for the supercharged 3.8L the V8 and possably Poilce Versions.

https://en.wikipedia.org/wiki/GM_4T60-E_transmission

 

You need new friends.