Детали системы АБС для GMC Sierra 1500

GMC Sierra 1500 ABS System Parts

The braking system is used every time a vehicle is put into motion and can be considered one of the most important safety features on a car or truck. brakes that are not functioning correctly can result in serious damage to your pickup or personal injury. Understanding how the anti-lock braking system on your GMC Sierra 1500 works is the first step in maintaining it properly.

What is the anti-lock braking system?

This system is often called ABS or the anti-skid braking system. It is a structure of parts that allows the tires on a vehicle to keep traction-style contact with the road surface and prevents them from ceasing rotation (locking up) and skidding. This is an automated system that allows for better vehicle control and decreased stopping distance on most surfaces. Multiple parts work together to create the ABS. The ABS system parts are listed below:

  • Electronic control unit (ECU): This part constantly monitors the rotational speed of each wheel and activates the next step in the process if levels indicate a slower (lock) or faster speed on one or more wheels.
  • Speed sensors: The ECU uses these sensors to monitor the tire speeds.
  • Hydraulic valves: If the ECU indicates a problem, these valves reduce or increase the hydraulic pressure to the brake of the affected wheels for correction. This either reduces or increases the braking force, depending on the nature of the tire speed.
What are the signs of a failing ABS?

As an important safety feature on your truck, it is important to repair or replace any parts of the anti-lock braking system that might not be functioning properly on your GMC model. While the brakes might still function without it, the ABS provides further assistance when slowing down and stopping that can prevent vehicle damage or personal injury. Generally, if there is a damaged or failed sensor, wire, or valve, you might one of the signs listed below:

  • Warning light: An indicator light might illuminate on the dashboard if there is a problem with the ABS. The system can potentially be automatically disabled while there is a suspected issue, so immediate attention is required.
  • Failing brake pedal: If the brake pedal doesnt seem to be applying pressure the same as it used to, there might be a problem with the system.
  • Locking brakes: If the wheels are locking up when you brake quickly during stopping, the ABS is likely not working. On most surfaces, the system should prevent this.
What kinds of ABS are there?

Depending on what type of brakes are being used, there are different kinds of ABS. The difference is the number of channels used (how many valves are individually controlled) and the number of speed sensors.

  • Four-channel, four-sensor ABS
  • Three-channel, four-sensor/three-sensor ABS
  • Two-channel, four-sensor ABS
  • One-channel, one-sensor ABS