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Daryl, Shop Owner, Certified Mechanic
Category: Car
Satisfied Customers: 12547
Experience:  28 years experience, Master Mechanic
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How do I replace a thermostat on a 2000 Pontiac Montana with

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Submitted: 8 years ago.
Category: Car
Expert:  Daryl replied 8 years ago.

Removal & Installation
1. Remove the air cleaner and duct assembly. See Fig. 10. Drain the coolant until the coolant level is below the thermostat.

2. Remove the crossover exhaust pipe. See Fig. 11. Remove the radiator hose from the thermostat housing.
3. Remove the thermostat housing bolts and clean any sealer from the bolt threads. See Fig. 12. Remove the thermostat housing and gasket.
4. Remove the thermostat. Inspect and clean the mating surfaces.
5. Install the thermostat housing and gasket. Install RTV sealer to the thermostat housing bolt threads. Install the thermostat housing bolts.
6. To complete installation, reverse removal procedure. Fill the cooling system.





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