Help!!!

[master wayne]

just recently bought 03 silverado 2500hd with lb7. truck has new injectors done about 2 years ago. drove great and engine purrs like a kitten for a week then one morning i got into it and the check engine came on, codes diplayed were p0202; injector circuit open cylinder 2, p0203;injector circuit open cylinder 3, p0205;injector circuit open cylinder 5, p0208;injector circuit open cylinder 8 and last but not least p2149; fuel injector group b supply voltage circuit open. truck starts up no problem but has very minimal power due to only half of the engine blocks fuel supply working properly. seems to me a small but impactful problem, chevorlet is trying to charge me an arm and leg. PLEASE HELP GUYS!!!

 

[TheBac]

Wiring harness near FICM chafing on bracketry (probably) or ficm failed (possibly).

 

[master wayne]

thats the same thing a diesel tech told me. i checked all wiring and i couldn't see any copper. also i separated the wiring and made sure it was completely off that bracket and truck still had same problem. although i did that i did not reset the computer. if i unhooked the battery and hooked it back up would the trucks computer reset allowing it to run properly?

 

[DAVe3283]

Yes, disconnecting the batteries will clear any codes. If you've looked at the wiring and don't see any problems, I'd get out a multimeter and verify the injectors are all the right resistance and you have power where you should in the FICM harness. If that looks good, your FICM is probably bad.

I can get you the pinout for the FICM connectors later today if you need them.

 

[master wayne]

ok thanks for your time, last question. if the problem was the harness chafing and i made sure the harness was 100% off the metal bracket, will the computer keep the truck running like crap until its reset?

 

[Poltergeist]

Moved thread to correct area.

 

[master wayne]

how do i move it and where do i move it to?

I'm brand new to this forum, how do i move this thread and where to?

 

[DAVe3283]

ok thanks for your time, last question. if the problem was the harness chafing and i made sure the harness was 100% off the metal bracket, will the computer keep the truck running like crap until its reset?

Yes, once it determines there is a circuit issue, it disabled those injectors to protect itself until reset.

 

[Big Block 88]

I'm brand new to this forum, how do i move this thread and where to?

He already moved it for you man. I would say ficm is out. As stated check your resistance and see where u stand