1999 Buick Century lights go on in wet weather

hi well the traction light comes on when a sensor see,s a wheel slipping.although you may not notice a slippage the wheel is slipping.basicly a warning to let you know you are on ice and snow. and yes a bad whees sensor can give a false reading as well as other sensors. a scan will tell you which sensor is a prob. the check eng also scan will tell you. your other light you wrote lock. not sure about that one ... good luck billymac