by Glasscaster » Sun Nov 30, 2014 5:15 pm
Just did mine a few months ago. I had a lot of trouble finding the right seal. Every part store in town either gave me the wrong part, or did not have one in stock. I finally ordered one from gmpartsdirect.com, the part was back ordered. When it finally came it was the wrong part also(can't return a special order part to them). I ended up just going to the Chevy dealer, they had it in stock for around $17.00.
Get a seal puller if you don't have one, or you might spend all day cusing at your truck. Grease up the new seal, clean and grease the housing. Knock in the seal with a block of wood, make sure it starts going in square with the housing so it dosen't deform the seal.
Good luck, hope this hepled.