Temperature Related
I had this same problem on my 99 CV, but it was related to temperature. One of the door switches would stick when it got cold (like 20F or lower) and I would drive around with the interior lights on, which makes night driving more interesting.
Because the car was so old and I didn't want to get into troubleshooting the switches in the cold, I took the dome lamp bulbs out. Problem solved.
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2003 300B BLUE (stolen for 9 days)
PI 3000 TC, 4:10 gear + girdle, Dynotech Driveshaft,
bulletproof trans, 2nd trans cooler + deep pan & Redline D4 ATF
Steeda UDs, Rear engine cooling kit, Denso plugs, high capacity oil filter on frame, Reinhart superchip
+ gauges, SilverStars, & fire extinguisher
2008 GMC Envoy SLT
2006 GMC 2500HD Crew Cab/8' Bed; 21.5' long