When shifted into gear the headlights and taillights do not work

1999 CADILLAC DEVILLE
7,900,000 MILES • V8 • FWD • AUTOMATIC
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CARUSO1918
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  • 1 POST
When it is dark out the screen in the car says headlamps suggested, which tells me the sensor is working telling me it is dark out. When you shift into drive the running lights come on no tail lights no head lights. I have checked all fuses nothing burnt out. I have moved the headlight sentinel switch back and for nothing happens. Also lights are out on the inside of for car like the lights on the string wheel and the radio. The lights for the speedometer work as does the clock.

I pulled the stalk (manual switch), and the lights still won't come on? (The car was parked in my garage for (one) month while I was out of town. They worked before I left). No sign of vermin activity. Any ideas?
Oct 23, 2016 at 10:49 PM
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HMAC300
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  • 48,601 POSTS
check relay's in under hood relay center, then have a mechanic scan for codes it may be a bad body module.
Oct 24, 2016 at 7:16 AM