A stupid question probably, but is it possible to clean a fuel pressure regulator on a '99 GrandAm? If so, how would one do it? Mechanic replaced a fuel injector, and according to GM [I made him contact them after we started having problems, and he was stalling] if one is not careful when reconnecting the fuel rail, debris can cause the regulator to malfunction, and it either has to be cleaned or replaced.
Our FORMER trusted mechanic said this would be another problem. BBB is being notified.