× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: Reflashing old Chevrolet PCM
Posted to Technical Discussion Forum on 5/20/2018

look at the pcm and see if there's an access cover to the PROM . if there's not a removable cover plate , i'd assume it can be flashed . if there's a cover plate , pop it off . PROM should be blue if it's O.E.......I THINK .

charles says he'... Login to read more.