* Low brake fluid: This is the simplest and often first thing to check. Low fluid can indicate a leak somewhere in the braking system.
* Faulty wheel speed sensor: These sensors monitor the rotation of each wheel and are crucial for ABS function. A malfunctioning sensor can trigger the light. This is a fairly common issue.
* Faulty ABS module: The ABS module is the computer that controls the entire system. A malfunctioning module can be expensive to repair or replace.
* Faulty ABS pump: This is less common but can cause the light to come on.
* Wiring issues: Damaged or corroded wiring connected to any part of the ABS system can cause problems.
* Problems with the brake system itself: Issues like worn brake pads, calipers, or other components outside the ABS system can sometimes indirectly trigger the light.
* ABS control unit fault: Internal failure of the electronic control unit.
What you should do:
1. Check your brake fluid level: This is the easiest check. If it's low, you likely have a leak that needs immediate attention.
2. Have it professionally diagnosed: Taking your Blazer to a qualified mechanic or a dealership is crucial. They have the tools to diagnose the specific problem causing the ABS light to illuminate. A simple code reader might give you a clue, but a professional will be able to interpret the code and pinpoint the fault more accurately.
Ignoring an ABS light is not recommended. While you can still brake, the anti-lock functionality is disabled, potentially leading to reduced braking performance in emergency situations. Get it checked as soon as possible.
