Jonathan D.

I have a 2012 gmc acadia and it overheats within 10 minutes. I just replaced the thermostat as those are easy to cross off the list but still having the issue. I did notice with the car running, it is not pulling the coolant from the resivour. Once I turn the car off it will slowly bubble into the block. So I'm thinking water pump but want to verify before spending the time and money replacing it. One last test I did was turn the heat on with the car running. I cranked it all the way up and it didn't seem to be blowing hot air. Granted it was 86 degrees outside. Any guidance is appreciated!