P0200 code and misfire on passenger bank LM7

[Paul Y]

Gentlemen,

Many thanks for the response, I really appreciate it.

i am going to start from scratch and go through my check list, below, as this must be something simple that I am missing.

1. Check grounds.- grounds currently run to battery negative but will check continuity of earths back as far as I can, hopefully to ecm.

2. Check power to injectors - believe this should be at least 12v with ignition on.

3. Check resistance of injectors - believe this should be between 10-14ohm

4. Use noid light to check signal from ecm.

5. If all else fails push the truck to the middle of the garden and set fire to it……

I only have a cheap code reader that won’t enable me to do a relearn so not carried out that function yet on teh CPS- being in the,UK not a lot of people have the software for GM vehicles, I know sacrilege…. Does anyone know of a cheap (free) program I can use? If not will have to wait for my post Christmas fun cash to replenish and enable me to get a reader and software.

Mind you, I am a 1/3rd of the way to getting HP tuner pro with the cost of the reader and software so might just have to save up a little more!

The annoying thing is that I have checked all this stuff more than once and each time everything check out.

Anyway, I have ordered a new cam sensor as this is also showing a fault and I have read that this could be a possible cause of one bank not firing the injectors. Rock Auto to the rescue with a Delphi one arriving on Monday.

From my list above is there anything else I should include in my check list?

Once again thank you - virtual beers to you all.

P.