this is my first time posting on these forums so hello everyone.
I recently purchased a 2007 Pontiac Grand Prix base model. It has 156,000kms, engine runs great and it's very clean inside and out. When I bought it, it had no warning/indicator lights on but of course a week later the tire pressure light came on. the yellow light flashes for about a minute then stays solid every time I start the car. also the DIC displays "Service Tire Monitor System". going through the DIC I can see that it only shows a pressure for one tire (Rear driver side) and nothing for the rest. all tires are at 30psi.
I did a bit of research on the issue and read that the actual sensors are part of the valve stem and the valve stems will be metal. but when I look at all my tires they are all rubber stems except the front driver side which is metal but not the one the DIC is showing a reading for.
Questions
-Does this mean I'm missing three of the four sensors?
-If that's the case why wasn't the warning light on before?
-Can I just get new sensors installed to get rid of the warning light?
-Will this have any effect on the ABS system or anything else?
-Is there any other way to get rid of the warning without buying new sensors?
