HD_DUALLY
Newbie
The ECM is a generic for all suburbans or trucks,etc.The PROM is for your suburban particularly.If you changed the ecm I hope you got one with the same part number,mine is 16197427,yours might be the same but the PROM(mine is BMHM)is what must be kept with your vehicle.I hope I explained that correctly and hope it makes sense.
BTW,the PROM is what all the programmers modify when they talk about ''chipping'' a vehicle.I've always been afraid to try it because with my luck I'd make it so bad it might blow up lol.
ok that's what i thought, ya i got a 16197427 as well, probably didn't need to though, just another part i threw at it trying to fix this issue. thanks again for all of your help. if this thing keeps acting up it might end up for sale. its a sharp truck i just need perfection in my vehicles lol
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