my wife brought a 2004 pontiac aztec, she fall in love with it, because it was in good condition, plus she need it a car fast, so she got it. couple of weeks ago we took it back to the used car dealership because we hear a grinding noise from the back tire. thnk god we have warranty and they fixed, but then the warranty run out, now today we wake up and found out a flat tire, we went and change it ,they rotate the tires so after 1 hour we left and my wife felt the car kind it funny and we hear a noise went she put the brakes and went she turn to the right same thing, then the light came on saying anti lock and another light saying awd disable ...so my ? is it is safe to drive like that ?or what can we do to fixed it beacuse i think that the guy who did the tires maybe disconnect the anti lock sensor ( awd) we dont want to be dissapointed with the car ,,,,can someone tell me what i shoul do thank you i will be really apreciated god bless...