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1996 Buick LeSabre Headlight Problem


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X_Static1
New User

Feb 12, 2008, 8:56 PM

Post #1 of 4 (5660 views)
1996 Buick LeSabre Headlight Problem Sign In

We have a 1996 Buick LeSabre. It has automatic headlights. The headlights wont come on at all. This started all at once. No warning signs. We have replaced the headlight switch and also the BCM. The headlights still won't come on. What can we try next?


Double J
Veteran / Moderator
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Feb 13, 2008, 2:44 PM

Post #2 of 4 (5642 views)
Re: 1996 Buick LeSabre Headlight Problem Sign In

Stupid question...

Anybody check the bulbs themselves??? I assume you did...

you can't turn them on manually??
Usually when the automatics go out its the photo sensor in the dash... but they would work manually...

Possibly a faulty dimmer switch...just a thought..
I'm not at my regular computer to check on a schematic for this....don't have access form this one.maybe one of the others can provide that...

IF not I'll be there tomorrow 2/14-


way2old
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Feb 13, 2008, 4:56 PM

Post #3 of 4 (5640 views)
Re: 1996 Buick LeSabre Headlight Problem Sign In

Also have the fuses been checked?



Being way2old is why I need help from younger minds


Double J
Veteran / Moderator
Double J profile image

Feb 14, 2008, 2:58 PM

Post #4 of 4 (5635 views)
Re: 1996 Buick LeSabre Headlight Problem Sign In

Here you go.....post back results....

Voltage is applied at all times to the lamp control module through the HEADLAMP Circuit Breaker and CKT 242. With the Head Lamp Switch ON, the headlamp switch input to the Lamp Control Module is grounded. The Lamp Control Module then applies voltage to the headlamp dimmer switch. When the Headlamp Dimmer Switch is in the LO position, the LH and RH Low Beam filaments light. When the Headlamp Dimmer Switch is in the HI position, the LH and RH High Beam filaments light. When the Ignition Switch is in RUN and the Ambient Light Sensor indicates darkness, the Lamp Control Module provides voltage through the Headlamp Dimmer Switch to the Headlamps.








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