Headlights not working correctly!!!!!

johnniemarcum · Jan 12, 2015

2002 Silverado all at once started having headlight issues. When on Low Beam; All bulbs are on, except the driver side high beam is brighter and the passenger is very dim. When on High Beam they all are still on except driver side high beam is on full power, the driver side low beam is on but weak. the passenger side high and low beam are both on but very weak. Any ideas of what the problem could be?

High Beam on Driver side works as expected. Low beam on Drivers Side, low power. High Beam on Passenger side and Low Beam on Passenger side Low Power. All are on no matter what mdoe your in. High or low.

I have checked relays, harness, and all grounds everything seemed ok please help thank you.
Johnnie Marcum

19trax95 · Jan 12, 2015

I had this same exact problem. It ended up being one of the headlight fuses.

There are two of them, one was burnt.

I'm guessing that since the fuse were for left and right side, but the wires are connected, the power from the left side (in my case) was not being used by the left side bulb completely, because the right side was a new load to the system and it was getting power from the left side.

So check the two fuses again and use either a test light or multi meter. A visual check doesn't always reveal a burnt fuse.

ChevyFire78 · Jan 13, 2015

Replace both of your headlight fuses.

johnniemarcum · Jan 13, 2015

WOW!!! i feel so stupid i thought they only had a relay. Thank you so much for your help it was a blowed fuse.

19trax95 · Jan 13, 2015

No problem.

semicrazy · Jan 13, 2015

Glad to hear you got it fixed.

Headlights not working correctly!!!!!

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