![]() The first such application was the 1990 Geo Storm. General Motors estimates that they have released flash updates for as many as 70% of 1995 and newer GM vehicles.īasic steps of flash reprogramming a vehicle computer.įlash reprogrammable PCMs have been ussed in vehicles since the 1990s. PCM flash reprogramming has become common as vehicle modules get smarter and more complex. from there, the software is transferred into the vehicle via the DLC connector to update the PCM or other modules. Once that has been installed on your laptop, you can download and transfer the new PCM or other module programming to the J2534 interface tool or scan tool. Then you have to download their interface software for your laptop so it can handle the vehicle download. Then you have to go to the vehicle manufacturer's service information website, pay an access fee and find the correct update for your vehicle. First, you have to have a scan tool or J2534 device that can reprogram your vehicle's computer. PCM Flash Reprogramming Procedure Copyright AA1Car Adapted from an article written by Larry Carley for Underhood Service magazineįlash reprogramming PCMs is NOT for the feint of heart. Auto Repair Library, Auto Parts, Accessories, Tools, Manuals & Books, Car BLOG, Links, Index
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