Curious if anyone could tell me if there would be any difference between a 99 ECM vs my 2000 ECM It it came off the same engine I.E. H.O. 6speed? Reason, I'm getting back into hauling trailers as soon as my freshly fused ankle allows me to, and FMSCA might require me to have an ELD(electronic logging device) not sure, because right now towaway operators are exempt for now, but 1999 and older engines exempt, not that I'll be worried about HOS but just an added extra monthly cost.

Edited February 4, 20205 yr by Blueox01

I'm pretty sure it would not be a direct swap. 98.5-99 likely would be but things change in 2000. However, @Smarty Support can flash it for you and make it work.

2 hours ago, dave110 said:

I'm pretty sure it would not be a direct swap. 98.5-99 likely would be but things change in 2000. However, @Smarty Support can flash it for you and make it work.

Thanks

You're welcome. Hey, that's post 1000 for me 

2 hours ago, dave110 said:

You're welcome. Hey, that's post 1000 for me 

Whoo Hoo! I'm only 436 behind you

Edited February 4, 20205 yr by Blueox01

Ecms are all different even few months apart. They say 01 02 are preferred ones as they seem to last longer. You'll have to program it to your truck no matter which one. I've spoke with few people who knows and they all said you can plug a different one in for testing purpose but don't leave it for a long time. Not sure why just what I hear.