Troubleshooting Common Problems of the Chverolet C1500 Suburban Tail Lights
The tail light of your Chevrolet C1500 Suburban is designed to withstand the rigors of the road, but like other parts of your SUV they too will eventually start to wear. Chevrolet C1500 Suburban tail light problems vary widely from one model year to another, though the most common ones include the following:
The tail light remains off while the other lights are working
If the tail lights in the Suburban don't work while the rest of lights do, the problem might be with the tail light bulb. Tail lights can last as long as 1,500 hours of use before burning out, although this can be significantly shortened depending on the quality of the bulb, operating conditions and other factors. In addition, the tail light can also fail due to a malfunctioning turn signal switch. The turn signal switch is connected to the tail light switch, and if it fails the current will not be able to reach the tail light bulb. Check the tail light bulbs to see if the filament has been cut or burned. If the bulb appears ok, the problem could be with the turn signal switch.
The tail light and other lights are not working.
On the other hand, if all of the exterior lights in your car do not turn on, a blown fuse may be the source of the failure. The tail lights are protected from amperage overload by a single fuse, and once the fuse has failed it will not allow the electrical current to reach the brake lights. Check the tail light system fuse in the fuse panel using a test light to determine whether current is passing through the fuse. If the test light illuminates on both sides, the fuse is okay. But if only one side of the fuse lights up, the fuse has failed and must be replaced.
The tail light is lit even when the headlight is off
Another, though less common, problem with Chevy Suburban tail lights is that they remain lit even after the headlights are switched off. In such cases, the internal tail light switch may be out of adjustment. Refer to the user manual of your C1500 Suburban on how to adjust the switch of the tail light for your specific model year.