ok thanks, that got me to the right information
your truck has the ecm mounted on the left hand side of the frame below the battery. There is also a smaller module mounted beside the ecm, this is the Driver, injector module. It is showing it separate from the ecm in the parts diagram. Part number: 91A2001100.
Don't confuse the logic VCM unit inside the RH foot step panel for the ecm, that is not it, that logic controller just acts like the interlink for all the other components on the machine and is where you can hook up Diagnozer (the pc diagnostic tool), in later models the installed a harness for diagnostic hookup that puts the plug underneath the cupholder instead of having to remove the footstep covers etc. Your looking for the ECM so you can locate the LP driver module mounted beside it.
I checked the service grams and there is one out for this injector problem.
What bugs me is there is no code on the display, by all rights if there is actually a problem in the injector it should be showing a code E-35.
If you have an email i can send you this service gram that has the information that will help you troubleshoot this issue.
if you want just drop me an email, mine is in my signature area and my profile.