Saturn 2007 Aura: The Service Air Bag light comes on and then goes off. This happened numerous times before I took it to the dealer. I finally took it to the gm dealer last year and there was no trouble codes saved for this. Then the car was fine all winter.now the Service Air Bag light is coming on again. It started up since we've been having alot of rain lately. I'll hit a small bump and it will go on then later off but sometimes I hit a bunch of harder bumps it will not come on again. The light seems to come on when I'm driving between 40-70mph. This car has had the typical gm problems leaky engine gaskets bad radio electronics & steering noises. this will be my last gm car!!!