My 1990 GMC started randomly blowing the ECM 10 amp fuse. This circuit works the Glow Plug circuit, the TCC switch and runs into the module for the rear wheel anti-lock brakes. Upon my diagnostics, the problem went away after I unplugged the brake module. Am I correct in assuming that they will now be like standard brakes? Any ideas on what could've been shorting out and blowing the fuses?
