2003 Pontiac Montana Repair Question
Topics covered: Heater, Engine, Water pump.
Mileage: 150,000 miles.
Mileage: 150,000 miles.
Asked on November 10, 2012
Pontiac Montana Heater Problem
Heater will blow cold air and sometimes it warms up, but mostly cold, what could be problem
Asked by (pending member)Answer
Replied on November 10, 2012
make sure hoses are both hot on heater when engine warm. then you'll hav eto check actuator in heater box. pic is of actuator but it shold be scanned to see what is wrong
Replied on November 19, 2012
I think your water pump is needing replacement as this was the problem same problem that I had