View Full Version : 2007 cts-v rear end

10-05-11, 09:50 AM
Is it true that half way thru '06 cts-v, the 2nd and 3rd generation diffs started coming out? If so, how does one know if they have a 2nd or 3rd gen diff in their '06-'07?

10-05-11, 01:15 PM
Do a google search..there's pics our there in threads.

Generally the old versions are smaller, have thinner ribs, and have a dull grey finish whereas the newer ones are shinier.

You could also visit a dealer and tell them you are shopping for a warranty, but need to know what had been replaced in the past before you buy. They may not print the detail out but they could verbally tell you if and when..

10-05-11, 10:00 PM
There are four different part numbers for a V1 differential.
1st --- 10361308
2nd--- 10368780
3rd--- 15793756 installed in '06 & '07.
4th--- 25873498 was released in 2008 for a slight improvement over 15793756