RTSmith
Senior Member
OK- I'll try and make this as sensible as I can. I have a '02 GMC C-6500 with hydraulic brakes. So therefore it has the electric/hydraulic parking brake. Driving home Sat., and the dash warning light starts to flash. Get home and the park brake does not work. I sprayed penetrating oil down the actuator part that moves in and out and checked the wire connectors. Now, in park the brake holds. Put it in Drive and the brake may or may not release and the SERVICE PKG BRAKE light comes on along with an alarm. The wires all seem good. Fluid good. Any idea what's up or where I can get hold of a service manual? My nearest MD truck dealer is 60 miles away...