I recently bought a 2003 Chevrolet Tahoe LT. It has a 5.3 with a 4L60e, high miles and the trans started slipping 3rd and 4th which is common from what I've read. The guy I bought it from gave me a low mile 4L60e from a 2005 2wd Silverado. I know I'll have to get the output shaft changed to fit the transfer case but are there any other differences? I've looked at rebuild kits and stuff and some read 1997-2003 and 2004+. Will I run into any issues putting the 2005 4L60e in my 2003? Any wiring/electrical differences?

I appreciate any help.

Thanks,
Eric

 

The differences for V8 (300mm input shaft LS version) 4L60E between 1998 and 2004 are tiny and should all be interchangeable. Certainly no wiring or electrical differences. Around February 2005 the input speed sensor (ISS) was introduced, but such a trans will work fine in older year cars because the speed sensor will be ignored. Therefore, you are good to go.

If you decide to rebuild it while changing the output shaft, get a 4L65E rebuild kit as the only difference is 7 frictions for the 3/4 clutch and and an extra $10. You may need to open the trans to determine if it has ISS as a few parts related to the pump (e.g. pump gasket) will be different in the rebuild kit.

 

Thanks for the reply. So that would explain why I heard a guy say they put a 2002 trans in a 2005 Truck and it wouldn't shift correctly due to no ISS in the older trans. I just wanted to make sure there wasn't any major differences in them.

 

You are correct. Putting a non-ISS trans into a newer vehicle will cause problems although a tune might overcome it.

 

I have a 2009 gmc with a 4l60e and im putting a 450hp 5.3 so i want to upgrade the transmission i can only find stage 2 and up for 03 at the latest will a 03 stage 2 work for my 09

 

Not sure what you mean by stage 2 and up but in 2009 things changed a bit the Manifold pressure sensor on the valve body went away and some other things , You will need to US an 09 up trans , Of note we have these in all levels 1-2-3 heavy hauler and such. We do require a core return.

 

 

As long as the 02 is 4x4 you are good to go

 

I took 2 trucks on trade for another. One being a 99 GMC 1500 4x4 and the other a 2004 GMC 1500 4x4 with real low miles. The 99 has a bad transmission. Will the tranny feo. The 2004 work in the 99? The 04 is just a parts truck intended to be used for a c10 build

 

So if I read this right I wont be able to use a 2003 in a 2006 without issues?

 

I have a 2006 Chevy Avalanche 4x4. And the transmission went bad. I have found a used 2002 and a 2004 transmission. Well one fit the 06?

 

Without even going into the transmission. Look at the color of the plug. If it is the same color, then it will interchange. Assuming both are the LS type of transmissions.

 

will a 2006 silverado 4x4 5.3 transmission fit in a 2000 silverado 4x4 5.3

 

yes. did you read any of the posts above? Or did you just create an account to get a quick answer?