Just installed new tpm sensors on my gmc sierra, i noticed the front left sensor showed blanks (- - - -) but other sensors showed 0 kpa pressure. does this mean that the sensor is bad?
So my 2013 gmc sierra 5.3 had some issues before with the oil pressure sensor. The oil pressure gauge used to stay under 275 no matter how hard i rev or accelerate. It had a p0521 code. So i took it to the mechanic and he replaced the oil pressure sensor. Now it does this whenever i rev the engine. The oil pressure gauge decreases as i raise the rpm. I was wondering if this was normal.
Idk if it's the sensor or the screen or whatever i read about. I couldn't find anything similar to this condition.