Thanks for the info, I'll give that a try. I was curious, I have a mighty vac hand pump, could I apply vac to the MAP with key on engine off to get any readings aslo? I also just foud out, this vehicle has the PIT Bull chip in it, could that affect th MAP also? Thanks!!
Chip has nothing to do with MAP. You can apply both pressure and vacuum with the mighty vac.. and can test the sensor that way.
Wonder if thats why it didnt have a hose on it. Our price on 3 bar GM maps is 70.00 in case you need one.