How to replace the thermostat in a car with an automatic transmission on Chevrolet Classic?

Autonomous transmission vehicles require removal of the Exhaust Manifold before beginning replacement of the Thermostat. Begin by draining the cooling system before you remove Thermostat Housing to water pump feed pipe bolts. Then detach the Thermostat Housing to water pump feed pipe. Then, take out the Thermostat. Begin installation by positioning the new Thermostat then installing the Thermostat Housing to water pump feed pipe immediately afterward. Tighten the Thermostat Housing to water pump feed pipe bolt to 10 nm (89 inch lbs.). Reinstallation of the Exhaust Manifold happens first followed by cooling system filling up when working with automatic transmission models.

OEM Chevrolet Classic Thermostat

Engine Coolant Thermostat

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Chevrolet Classic Thermostat, Green Line Part Number: 12622410
$69.04 MSRP: $153.83
You Save: $84.79 (56%)
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Product Specifications
- Other Name: Thermostat Assembly-Engine Coolant; Thermostat Kit, Engine Coolant Temperature; Thermostat, Engine Coolant Temperature
- Replaces: 21018811, 55350941, 90537453, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Chevrolet Classic | Base, LS | 4 Cyl 2.2 L GAS
View related parts
Chevrolet Classic Thermostat Housing Part Number: 12584901
Product Specifications
- Other Name: Housing, Engine Coolant Temperature; Thermostat Housing Cover; Housing, Engine Coolant Thermostat
- Replaces: 13104428, 24447804
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Chevrolet Classic | Base, LS | 4 Cyl 2.2 L GAS

Chevrolet Classic Thermostat

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Chevrolet Classic Thermostat Parts and Q&A

Thermostat, Green Line
12622410
Q: How to replace the thermostat in a car with an automatic transmission on Chevrolet Classic?
A:
Autonomous transmission vehicles require removal of the Exhaust Manifold before beginning replacement of the Thermostat. Begin by draining the cooling system before you remove Thermostat Housing to water pump feed pipe bolts. Then detach the Thermostat Housing to water pump feed pipe. Then, take out the Thermostat. Begin installation by positioning the new Thermostat then installing the Thermostat Housing to water pump feed pipe immediately afterward. Tighten the Thermostat Housing to water pump feed pipe bolt to 10 nm (89 inch lbs.). Reinstallation of the Exhaust Manifold happens first followed by cooling system filling up when working with automatic transmission models.