Chevy and GMC Duramax Diesel Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
1 Posts
Discussion Starter #1
I am currently having issues with my duramax.it is a 2004 lly. i was told i had a bad ficm. put a new one in and still no fix. we think its a wiring issue. doing a contribution test injectors 3,4,5,and 7 all read 0. where in the harness or anywhere for that matter would cause that? thank you in advance
 

·
Registered
Joined
·
451 Posts
Has the truck ever had the harness that runs over the alt bracket protected? If not check for damaged wiring there, but being as the truck is 16 yrs old I would guess it has already had that done.
 
1 - 2 of 2 Posts
Top