04.5 LLY truck dies LOTS of injector codes

paint94979

Beer Nazi
Sep 18, 2006
11,715
8
38
37
Buddies truck starts normal idles normal for 10 seconds then rattles and shuts down. Throws injector codes 1-8 and bank 1 and 2 voltage codes. FICM?
 

DAVe3283

Heavy & Slow
Sep 3, 2009
3,727
296
83
Boise, ID, USA
It sounds like the FICM, or a wiring/harness issue. If the FICM doesn't see a good connection to the injector, it will turn off several at a time to protect itself. An open circuit (broken wire) or short circuit (rubbed wire) can cause all sorts of problems.
 

carl.swoyer

New member
Jan 31, 2016
90
0
0
I had #2&#7 short out . it was covered by a recall from gm

Sent from my XT1254 using Tapatalk
 

paint94979

Beer Nazi
Sep 18, 2006
11,715
8
38
37
OK so...

Buddy tried a working ficm and with that particular one the truck will not fire and it sets an FICM code?
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
I'd start looking at wiring in that case. I have a FICM on mine that's not from the same truck as my ECM and no issues like that