I have spent about $2-2500 fixing my Monte. From the axels, tires, spark plugs, radiator, abs traction sensor, motor...my check engine light just came on along with my abs traction light. Its running fine so why do the lights keep coming on!?

 

Go to auto zone and have them run codes, the wheel hubs can cause your service traction soon BUT so can your harness. You're CEL could be anything, probably an O2 sensor. Have someone run the codes on an obd2 scanner and then you can start trouble shooting. This is the easy part of what mechanichs do.