[silver100]

2000cayukon ,

i did try another ecm but it was used so i am not for sure that it could be bad also as it ran the same no fix . the computer in my truck now is a reman from advanced auto but i don't know how old it is . i put a timing light on my fuel injectors and they seem to be working okay . i just have a miss at idle and feels sorta like a plug cutting out as it will cutout every couple of seconds . i did find out that my egr is bad so i ordered a new one so maybe that will help . but the miss really stands out in when the truck warms up . i can advance the time and it will help a little , but the miss is still there . i also tried ac delco plugs and it did not help either , also 2000 ca yukon it could even be in the e-prom in the ecm going bad maybe . if i find out anything i will be sure to post . also i would really appericate any input as i would like to fix this truck as it has beat me so far . thanks silver100