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Re: C6500 GMC SERVICE PARKING BRAKE LIGHT ON
Posted to HD/Fleet Forum on 8/27/2008

Release the parking brake( push the button with the key on) loosen the jam nut on the parking brake cable and bottom the adj nut against the actuator rod. This will take up any slack in the cable. Check the shoes and adj linkage at the trans( like the previous... Login to read more.