Sounds like the intake throttle valve is sticking shut.
Then again, an 07 may not have an itv.
Does this truck have more than one switch on the brake pedal? If there is one that engages with the pedal released, check to see if it fully engages.
There's no reason LEDs couldn't go in there, that I know of. The polarity just has to be correct.
Another recommendation for superbrightleds.com.
You might have to graft a LED to your existing base.
They are available in different colors, too.
At this point, anything I offer you will just be conjecture. There are some that I just have to hook a computer to and drive around until it gets pissed off.
If you're ever halfway up the east coast, I'd be happy to look.
Have you found any debris yet?
If the symptoms are still there after checking for restrictions, don't jump over to the high pressure side until you've run the truck off of an aux fuel source. If you confirm that everything in your test setup is clean, and the truck fails to perform, then you...
This is a common problem, but there is more than one possible cause.
Common things that can cause this:
Bad fuel injectors
Turbocharger failure
Intake throttle valve failure or sticking
Exhaust brake out of adjustment.
The A8440/A8510 recalls may apply to your truck, call your local dealer...
What the hell. How are they failing??
If they are repeatedly coding for U0073, check the ground wire on the VNT connector for high resistance to ground. Check for proper CANH and CANL voltage, check for proper power supply. While you're at it, aggressively debride every ground connection on...
Those trucks didn't have a crankcase vent filter. You could add one by getting the cap off of an 11-up truck, and pulling a plastic thing out of your breather housing and throwing it away. Install cap and filter off later era truck, good to go.
P0087: Take one of the banjo bolts out of the...