A search resulted in 21 pages of discussion but nothing definitive I could take away. Perhaps someone can offer some additional information for me... Looking to put new shocks on my 2500 Duramax 4x...
If you still have the OEM shocks then your about 5 years late on replacing them. Replace all four. I went with Bilstein HD (yellow and blue). Did have an issue with the grommets failing. Had to go through the internet company I bought them from (eshocks) which turned out to be a pain. I like the shocks but will never buy from eshocks again.