newish member

[jdbake]

i joined back in 2013 during the summer as i was doing a motor swap in my 97 gmc sierra. i went from a 4.3-5.7 vortech. i had a lot of helpful information. Basically i found out that its a straight swap other than adding in two wires for the two new injectors and also moving some of the old wires around to fit the v8 pcm. i had to use the v6 wiring harness but it all worked out just fine. but upon finishing the swap and a year later returning to work on it i found two codes one for the front passenger side 02 sensor and the crank cam correlation code. I've tried clearing the code by adjusting the distributor to a certain degrees but it hasn't worked out. i took it to the shop and the timed it but its still pulling up the code and i haven't messed with the 02 sensor yet but it'll die when i first start it and let it idle but if i start it and press the gas its just fine. any help will be grateful. thanks y'all

 

[twomanymontes]

Welcome Aboard!

The cam crank correlation code would be caused by the computer not knowing where to sync the cam and crank, you said you needed to swap a few wires around to the PCM dueto using the 6cyl harness with the 8cyl PCM, could there possibly be another wire that doesn't match?

 

[jdbake]

i don't think so. i swapped everything around as to the specs i found for the wiring to make the v6 harness a v8 harness and everything checked out just fine. i have heard that it has to do with degrees at which the distributor is set has something to do with it but i am not able to set the degrees myself and i don't know if a gm shop would charge an arm and a leg to do it.