1987 G20. The BRAKE light on the dash stays on. Brake fluid reservoir is full. Foot/parking brake us fully released. Any ideas?? Thanks.
Mine has done this same thing since I bought it. I assume that there is a switch somewhere in the dash for the e-brake pedal that has failed or come loose. I'll have the dash out in a few weeks and will verify then.
Check the proportioning valve that separates front and rear systems. If the internal piston has moved the "brake" light will remain on.