* Clock Spring: The most common culprit is a faulty clock spring. This is a spiral-shaped electrical connector located behind the steering wheel. It allows the airbag, horn, and other steering wheel controls to maintain electrical contact as the steering wheel turns. A worn or broken clock spring will interrupt the circuit to these components.
* Wiring Harness: Damage to the wiring harness, especially near the steering wheel or column, can also cause this issue. A short, fraying, or corroded wire could interrupt the power to the horn and airbag system.
* Airbag Control Module (ACM): While less likely if *only* the light and horn are affected, a malfunctioning ACM could also be at play. The ACM is the "brain" of the airbag system. A faulty ACM can cause a wide range of issues, including airbag light illumination and horn failure. However, other symptoms like malfunctioning seatbelt pretensioners would likely also appear if this were the case.
* Fuse: Although less probable given both issues, a blown fuse related to the horn and airbag system is also possible. Check your owner's manual for the fuse box diagram and check the relevant fuses.
What to do:
1. Check the Fuses: This is the easiest first step. Check the fuses related to the horn and airbag system (your owner's manual is crucial here).
2. Don't Attempt DIY Repairs on the Airbag System: Working on the airbag system is extremely dangerous and should only be done by a qualified mechanic. Improper handling can lead to accidental deployment and serious injury.
3. Take it to a Mechanic: Because of the potential safety risks, take your Chevy Tracker to a qualified mechanic or dealership. They have the proper diagnostic tools and expertise to safely identify and repair the issue. They can use a scan tool to check for diagnostic trouble codes (DTCs) within the airbag system that will pinpoint the likely problem.
Ignoring the airbag light is extremely risky. A malfunctioning airbag system means you won't have the crucial protection in a collision. Get it checked immediately.
