It's no big deal to replace a module;I have an extra one in the glovebox of each of my trucks,and can change one in under 5 minutes if necessary,but haven't had to yet.Don't forget the di-electric grease on the back side of the module;that's another thing P.O's tend to forget,but the module relies on that film of grease to transfer its heat to the plate.Without it,the module will fail prematurely.
