I have a 2005 chevy tahoe that has been flashing service fourwheel drive about once or twice a month. When it flashes the tahoe will go into auto 4 wheel drive. Also now it will flash service air bag and the air bag light will flash 4 times then stay on. Does anybody have any ideas what is going on?

Thanks

 

Had the EXACT same problems with my '05 Silverado. Airbag sensor in the front was bad, had it replaced. 4-wheel drive issues: I had the transfer case and actuator replaced (grinding sound) and it still didn't work. Turned out is was a corroded wire and bad connector pins. Dealer fixed that problem for $300. Good luck.