Hello all, I am the proud owner of a 1997 GMC B7 class C school bus. I have an issue, the mechanic shop I hired to inspect the brakes told me that a module that triggers an alarm on the dashboard has failed - something called an MFAM - Multi-Function Alarm Module. From my recollection, it detects brake pressure when the key is in the ignition and detects the electric pump building pressure (I might have that description all wrong..) I'm being told this part has been discontinued by GM, and the mechanic shop cannot find this module.
Anybody familiar with this issue? I'm not prepared to condemn the bus because it is in amazing shape. Any help would be very appreciated.