Good morning. I recently purchased an 89 c2500 and found your forum while trying to figure out what the previous owner did. Thanks to the information here, I found the junkyard gave them them a 1227787 instead of the original 1227747 and the prom chip was for a 454 instead of my 350. Now that I am on the right track, I'll probably be buying a burner and ALDL cable. I'd like to enable lean cruise on the truck and see what I can get for mileage.

Has anyone used the Moates 2 timer and loaded different bins for different purposes? I was thinking of lean burn tune for normal driving and another for when I'm pulling my 33' trailer.

Thanks again for the help. People here seem to be really knowledgeable and willing to share.