Cam sync fault can be disabled too but that's a fixed fault that is pretty significant on a turbo Buick application with the C3I ignition. If you have a cam sync fault, you should be looking to fix the source of fault. It usually means that your getting a cam sync trigger at an unexpected crank angle. Perhaps it's too close to a crank pulse? The stock 25* ATDC should be a good place for targeting cam sync.