2002 Cavalier ABS, service light Trac Off

Everytime I make a left hand turn, the abs, service light and trac off light comes on.  I have brought it to a shop and they are unsure what the problem is since they have never encounter this before. 

Has anyone heard of this problem?

you probably just have a loose conection for your wheel speed sensor. and every time you turn it dosnt read the signal that your wheels are turning the same speed like in an ABS stop or poor traction situation.