2001 Chevrolet Tahoe • 4WD Automatic • 150,235 miles

How to replace a thermostat on chevy tahoe 2001?
Every week I will have to refill coolant pump: It flashes out coolant from the bottom after I turn off the ignintion. Also I get display on my dashboard: "low coolant" So that makes me thing that I need to replace my thermostat. I hope that is all it is. Any other advise will be greatly appreciatted.
March 24, 2011.

You have a leak somewhere if you are adding coolant/ have system pressure tested to pinpoint leak and repair the leak.

Mar 24, 2011.