will a 02 tahoe pcm work on a 04 silverado? I don't like the tune i got on my truck and want to swap it to stock but i dont feel like taking it to a dealer. So if i can use that i will. Also i got a u0107 DTC and I can't seem to fix it. I checked for crimped wires and i have none. I replaced my whole throttle body. I replaced the sensor down at the gas pedal. And still nothing. I did take the truck to get scanned today and it had 27 DTC's but i cleared them all and it kept the U0107 code only. And I do get reduced engine power when i step on the gas hard (as if i was to floor it) or on random start ups. But I can turn of the truck wait about 10 sec's and restart and it will be gone and I can drive normal for abit.

 

02-04 the pcms are not I repeat NOT interchangeable.

Just gotta follow out the trouble tree for that code step by step only way to fix it. I didn't look but if it's for serial com between the TAC module and pcm check each and every ground and clean them on the block first.

 

Alright thanks. And is there any other way for me to go back to a stock tune without taking it to a dealer? ( bought the truck with some kind of hand held programmer tune on it) and I have no access to it.

 

Nope, gotta go to the dealer.

The PCM swap break point is the 02-03 model year. 03 introduced new communication protocols that didn't exist in the 99-02 trucks.