Where is the reset button on the brake proportioning valve?
After continued use, the proportioning valve can become out of alignment and it may need to be reset. It is helpful to have some knowledge of vehicle mechanics to complete this task, but it is unnecessary. Locate the brake proportioning valve near the rear brake line. It will have one or two buttons located on it.
What does it mean when your brake combination valve is stuck?
If the the light does not come on, the valve system is operating correctly and no further testing is required. If the light does come on, this indicates that the pressure differential valve is stuck in the front or rear position. Bleed the brake system to determine if the front or rear lines are blocked off.
How do you reset a car brake valve?
It is an “L”-shaped metal valve. Push the reset button located on the valve with your fingers, which will reset it so the valve is working properly again. Inspect the brake pressure. If the pressure is restored to the brake line and your brakes seem to be working properly again, then the reset button worked.
How do you fix a proportioning valve on a car?
Have your assistant hold the brake pedal down while you place the flare nut wrench on one of the front brake line cap nuts on the proportioning valve, if the dash light remained on. Loosen the cap nut with the wrench and have your assistant firmly press the brake pedal.
After continued use, the proportioning valve can become out of alignment and it may need to be reset. It is helpful to have some knowledge of vehicle mechanics to complete this task, but it is unnecessary. Locate the brake proportioning valve near the rear brake line. It will have one or two buttons located on it.
What are the brake lines on a Chevy Silverado?
The brake lines used in all GMT800 Silverado/Sierra/Suburbans are a copper plated steel tube. The lines are then coated with an “AlGal” coating to protect them from corrosion.
It is an “L”-shaped metal valve. Push the reset button located on the valve with your fingers, which will reset it so the valve is working properly again. Inspect the brake pressure. If the pressure is restored to the brake line and your brakes seem to be working properly again, then the reset button worked.
Why are the brakes soft on my Chevy Silverado?
Air trapped in the lines, calipers or wheel cylinders will make the pedal feel soft and spongy. Air is compressible, so when the brakes are applied any air bubbles in the system must first be compressed before the hydraulic fluid will transmit pressure to apply the brakes.
What to do when your brake light goes out?
If the brake pedal does not move downward, have your assistant stomp on the brake pedal with medium to hard pressure, and hold it down firmly. If you hear a click from the valve, and your assistant tells you the dash light has gone out, stop and close the valve.
Where to find the brake light warning switch?
Wiggle the brake light warning switch wire on the top of the proportioning valve, making sure it has a tight, clean connection. Locate the brake line on the valve that leads to the rear brakes, as well as the two single lines that lead to the left and right front brake calipers.
What happens if you don’t put PV on your brakes?
With no PV, the rear brakes will lock up too easily and cause loss of control. That plastic nut-looking thing on the top of the stock PV is a plug for what I assume would be where a switch or sensor of some sort would go. The ones on the ends are rubber caps and cover bleeding ports.
When does the parking brake light go out?
If there are no problems detected in the brake hydraulic system, the red light will go out after 1 to 2 seconds. If there is a problem detected, then the red light will stay on. As long as there are no problems detected in the parking brake system, the parking brake light will stay on until the parking brake is completely released.
Why does the brake light come on when the key is turned on?
When the key is first turned on the RWAL module turns the dash brake indicator light on for 2 seconds, then it should go off. You can unplug the wire on the Combination valve to see if it is the cause on the light coming on. The RWAL system can store trouble codes, but it is only capable of storing one code at a time.
Wiggle the brake light warning switch wire on the top of the proportioning valve, making sure it has a tight, clean connection. Locate the brake line on the valve that leads to the rear brakes, as well as the two single lines that lead to the left and right front brake calipers.