I have a 5.3 motor swap in a 1990 silverado with a 2002 v8 gmc savanna PCM from a junkyard , it's changed over to cable throttle . I have it running but It throws the 1518 dts code. I read that I need to do a writte entire but I'm am not sure what tune to use. Or can I simply put 0 in system options etc? Any help will be appreciated thank you