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Expert: - 3/25/2010


Question
I have moisture in one of my headlights and possibly that's why the bulb failed. I went to have it replaced and when they did they said the light won't work, possibly an electrical issue, they don't know the source.. I had no time to wait for them to look, especially if they have no idea what it is. Do you know what might the problem be? They also said to drill a hole on the bottom of the headlight to get rid of the water.. is that a good way of solving that issue?

Answer
Hello,

The reason there is moisture is because you already have a hole in the headlight, possibly from a stone hitting it and they are telling you to drill another hole? What goofs!

The only way you can fix this is replace the headlight assembly.

If you look on the web for new after market headlights you might find a good deal. The dealer wants $200 each for my Suburban headlights. I bought new after market for $38 ea.

As far as your bulb not working, could be corroded socket, but if I were you, I would take the car to someone more competent.

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Rob Painter

Expertise

Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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