Question about 2002 Buick LeSabre
I noticed that the headlamp was aimed much too high. I tried to bring the beam down by turning the vertical adjuster screw. I observed that the adjuster's shank was protruding. It was not sitting flush.
I turned the adjuster, but nothing happened. The adjuster didn't get longer, or shorter. It seems that the adjuster can't adjust in the vertical direction. It was the vertical adjuster, not the horizontal one. Any idea what the problem is?
I had the same issue and I noticed that the bulb itself was not screwed in properly. The bulb has 3 small plastic guides that fit in 3 holes in the lamp socket, after which you are supposed to give it a small twist and the plastic guides go under the metal part in the lamp socket; in my case one of the plastic guides was left outside so the bulb was not straight in the socket. Take the bulb out and install it properly, I took the whole lamp out but this is not really necessary.
Posted on Aug 30, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
The ability of the control modules to communicate through the serial data circuit
The identification of any stored diagnostic trouble codes (DTCs) and their status
The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Mar 15, 2015 | 2002 Buick LeSabre
The headlamp circuit is rather simple. From the 15 amp RH headlamp fuse, there is a red w/yellow trace that goes to the RH high beam. Out of the 15 amp LH headlamp fuse, the wire going to the LH Hi beam is solid red. Both of these wires should have power when the headlamp relay is energized. The wires from the Hi Beam bulbs going back to the switch should both be red w/black trace. The wire going from the headlamp relay to power the 2 15 amp fuses is white. The headlamp switch applies a ground to illuminate either the Lo Beams or the Hi Beams.
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