Originally Posted by tora
I used to drive an H1...
'06 H1 used a Duramax.
thats correct. they used the duramax/allison tranny combo starting in 06
i was misinformed, i thought the older ones used the cummins 4bt... but thats just a swap a guy i knew did. thanks for pointing that out lol obviously i dont know that much about hummers.
why did you sell yours tora?
but cummins engines kick ass...