My 2002 Chevy Impala 3.8 Liter LS’s headlights do not work anymore. I have after market fog lights and those are what I use to see at night. Tail lights work perfect and I just had new headlight put in 3 or 4 weeks ago. Any suggestions?
Answer: First thing is to check all the fuses. You may have one or more blown. There are several fuse panels in the car and under the hood. Next, you will need a test light to check for power into the headlight bulb socket on each one. If you do not have power in, then check for power out of the headlight switch.
If you do have power to the bulbs, then check for ground. Ground is usually the black wire. Every electrical circuit needs power and ground to operate. A wiring schematic is needed if you are going to have to trace wiring into the body harness to look for the problem.
Most common is a bad headlight switch but we have seen corroded wires or connectors behind the lamp assemblies as well.
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