I own a 1995 GMC Suburban. The right and left turn signal flash quickly as if the bulbs are burned out. Both tail light bulbs do not light when the turn signals are activated. The front lights still operate just flash quickly. The hazards flash at regular speed but still no light from tail lights. Tail lights do operate when head lights are activated. The Reverse lights light up when the reverse gear is engaged. The brake lights do not light on either rear side, but the brake light bar above the rear cargo doors still lights. Curious to know if there is a problem with the turn signal switch, or if there is a circuit problem. I am currently a student at a community college and understand most electrical problems but this one has me stumped.