hi to every body.
im haider from iraq glad to join u.
i have hummer h3 modele 2007.
1-when i drive fast in high way appear amessage"serv tpm" i know ut about tires but i cant understand what is the problem????
2- all time amessage appear"stab sys" when i go to the mechanical he said that: stearing angle position? and he cant fix it
please help me...

 

You will have to have the codes read to know what type of TPM problem you have. Start with checking that your pressure is set to spec on all tires, also make sure your spare is on the tailgate and not in use (it does not have a sensor).

Your Steering angle sensor needs to be straight and calibrated when your wheels are pointed straight. I have seen problems with these when the alignment is off, or if the car has been in a minor accident. If your steering wheel is off a little it will set this code.

I hope this helps. Jim