03Cumminsguy

Yeah I don't have a key fob for it. I'm thinking the PCM out of this other truck had the higher security system but my truck doesn't so that's where I'm kinda lost. I need to figure out which wires to cross to get past it.

Everything is good and operates fine if I put the PCM out of my 2000 into it.... Fires up, runs and drives, but no lockup, overdrive or obd2. If I put the 1999 PCM back into the truck, cranks but won't start, but has obd2. But to answer your questions, yes lift pump works, brand new vp44. It's like a electronic factory anti theft shut down issue, definitely a PCM issue

Thanks for the reply. I just put the 99 PCM in both trucks and it's acts like there is a anti theft thing going on... Just cranks and no cel's. I put the 00 PCM in and it starts right up but no communication to the trans or obd2. Btw.... The pics are the befores and afters. Same truck lol

Ok. I'm new here and have an issue I've been stumped on for 2 months. I bought a 99 24 valve that was a 5 spd truck, it came with all the automatic stuff from another 99. I have everything installed and all is good except the PCM. The PCM is the 56040199 which is verified a 99 automatic PCM, however when starting the truck, it acts like a 3rd gen with a transponder key. It starts, runs for 3 secs and dies.... It did that 3 times and now a no start and I know 2nd gens didn't have a transponder key. It has full communication with the obd2 connector but no CEL's and now a no start. I "borrowed" the PCM out of my 00 which starts, runs and drives the truck but I have no communication with the obd2 connector, no lockup and no overdrive. Any advice would be awesome. Thanks, it's been a hell of a project and I just want it done lol