Here's why and what to check:
* The ABS system is complex: The Anti-lock Braking System (ABS) has multiple sensors, a control module, and wiring. A blown fuse would likely indicate a short circuit or other electrical fault *within* the ABS system, not the cause of the light itself.
* Possible Fuse Roles: There might be fuses related to the ABS pump, its control module, or individual wheel speed sensors. A blown fuse in one of these circuits *could* prevent the ABS from functioning and cause the light to come on. However, finding a blown fuse is not a guaranteed fix.
Troubleshooting Steps (in order):
1. Check the ABS Fuse(s): Consult your owner's manual to locate the fuse(s) related to the ABS system. Visually inspect them for being blown (look for a broken filament). If blown, replace with the correct amperage fuse. However, if the fuse blows again immediately, you have a more serious short circuit and need professional help.
2. Check the ABS Module: The ABS module is the "brain" of the system. It can fail internally, causing the light to illuminate. This often requires professional diagnosis and repair, as it's a complex electronic component.
3. Wheel Speed Sensors: These sensors monitor wheel rotation speed. A faulty sensor will trigger the ABS light. They are relatively easy to check for continuity with a multimeter (consult a repair manual for specific instructions). They can become damaged, corroded, or have wiring issues.
4. Wiring and Connections: Inspect the wiring harness for the ABS system for any signs of damage, corrosion, or loose connections. Pay close attention to the connections at the wheel speed sensors and the ABS module.
5. Professional Diagnosis: If you can't identify the problem after checking fuses, sensors, and wiring, it's best to take your Tahoe to a qualified mechanic or an auto parts store with diagnostic equipment. They can use a scan tool to read the ABS module's diagnostic trouble codes (DTCs), which will pinpoint the exact problem.
In short: While checking the fuses is a good first step, don't expect simply replacing a blown fuse to solve the ABS light issue. The light is a symptom of a problem within the ABS system itself, and professional diagnosis may be needed.
