Which Motor Do I Have

[tgude]

how can i tell which diesel motor i have in my 2004 silverodo hd the6.6l dmax or RPO LLY engine and what is the differance between the two.

[ABQFirefighter]

Simple way, open your glove box and look at the build sticker. It's alphabetical. You'll either see LB7 or LLY.

[tgude]

how can i tell which diesel motor i have in my 2004 silverodo hd the6.6l dmax or RPO LLY engine and what is the differance between the two.

 

thankyou ABQFirefighter

[ABQFirefighter]

Anytime........