Hey guys, i have a mint 99 sport extended cab short bed with 8.5" lift, 35s etc.... anyway, i am buying a parts truck and swapping it over to a 12 valve diesel. the truck is more for show and play, so the half ton frame will be fine. anyway, im going to use the axles, auto tranny t-case and motor from the parts truck. my question is with the obd2 system. What year did the cummins truck use obd2? Also, i know i will need the ecm, and it should plug right into my truck. Can i just leave all the wiring on the motor and just unplug and undo the grounds from the frame and cab, then swap everything over and just re-plug in the ecm, and connect the grounds? im leaving my dash alone, and not going to run a wait to start light, as i will be able to hear the grid heaters kick on and off. My only concern is with the obd2 system working correctly for inspection. any thoughts on this?
thanks

 

Can't help much, but I do know that the 98 trucks had half of them being 12 valves and then went to 24 valve mid year. The 98 12 v's have the newer style interior like you have.

 

obd2 should be 96 and up

 

ok, thanks. DOes the diesel obd2 system run the same systems ready checks as the gas motor does? fuel system ready etc.......?
thanks

 

If you live in a place that E-Checks vehicles and you dont have a way to get around it, I would not do this swap. Sell your truck and buy a diesel. Its not the answer you want, but its the only answer thats right.

 

If you have to have it inspected, there is no way to get it through, the Cummins is only certified for medium duty, which the 1500 isn't.

 

so far my 82 has passed in tenn. with flying colors.