Suspension, Brakes and Tires Discussion, Proportioning Valve in Item Specific Cadillac Discussion; I lost a rotor and replaced the pads, rotor and checked everything else to be sure everything worked as expected. ...
I lost a rotor and replaced the pads, rotor and checked everything else to be sure everything worked as expected. The brakes work fine on both slow easy braking and hard aggressive braking. One problem, the brake light stays on. I believe it to be the proportioning valve. I found it but I haven't a clue how to return it to the middle.
In an attempt to balance the valve, I depressed both front caliper pistons to "reset" the fluid but the light stayed on.
Automobile(s): White Diamond '03 DHS (with DTS floor shift)
Re: Proportioning Valve
I am not positive but I think it is front and rear. I also do not believe that the proportioning valve will set the brake light. Check the parking brake to be sure it is all the way up in the disengaged position. Also check the brake fluid level and the level sensor.
Dang I 'h sure feel dumb ...
Yep, you were right, it was the sensor. While running and the brake light on I fiddled around by the break release catch ran-dumb-ly ... and the light went out. What a relief (I already had the left rear wheel off as was getting ready to depress the piston). I sprayed WD-40 all around up there. It sets and releases like a champ, and the light goes out like it should. THANKS. You guys are great. --Ben