Make sure you check that web site link in blue on first post and get the part #.........I emailed them and they said I want the HD model for my 04. It's rated for more weight! there was (IIRC) 04h and o4hhd the hhd being the one!
Q. On the 2004 Duramax how can I tell if I have and LB7 or an LLY
A. Check the 8th digit of Vin.
If it is a One (1) it is an LB7
If it is a Two (2) it is an LLY
Men I will now let you in on my little secret! ;) I'm a Folger's instant man. I make it a couple of different ways. Sometimes I will warm 2% milk and add the coffee..Now don't knock this until you try it. It's pretty darn tasty. Other times I just heat up water and add equal parts coffee and...