I recently had Dead pedal problems. Also Wait to Start (wts) light is not coming on. Now I have no lift pump noise before starting truck. Or after bumping the starter.
I changed the APPS and that fixed the dead pedal only.
Now I tried hooking up programmer to check codes and the programmer won't load up with key on. After 20 seconds or so the odometer says NO BUS.
So I'm 95% sure the ECM is shot. I bought a used ECM. Auto trans, same year. I have called 6 dealers, NOBODY has DRBIII software anymore to reprogram it to my vin. The software has all been updated to some new carp.
So. Will my truck run and drive if I just swap ECM's? I've read conflicting stories. A lot of them say Yes just swap it.