Front Air Bag Sensor Control problems of the 2004 Chevrolet Colorado

I have a 2004 Chevrolet Colorado extended cab that continues to experience intermittent electrical problems. The airbag sensor light comes on unexpectedly, the fan blower intermittently stops working on settings 1-3, and the front turn signal bulbs go out every 5000-6000 miles. I can usually brush the components under the glove compartment to get the blower working, and the airbag sensor usual goes out after a week or so.

While driving the air bag light warning light turned on, taken to dealership to be fixed, problem persisted even after the dealership said air bag connectors were cleaned and/or replaced, currently unaware if air bags will deploy in the event of an accident. Vehicle rpm's fluctuate down to 500 while vehicle is slowing to a stop during cold weather. Dealership was issued service bulletin and problem was addressed but returned within driving approximately 50 miles, during severely cold weather vehicle is able to stall the engine while in motion.