How to replace a thermostat in a cooling system for Chevrolet Cobalt,HHR,Saturn ION and Pontiac G5?

Before faulting the thermostat, check the coolant level, drive belt tension, and temperature gauge. To replace the thermostat, disconnect the battery's negative terminal and drain the coolant. Detach the hoses from the thermostat housing cover. Remove the thermostat and install a new gasket.

Genuine Saturn Ion Thermostat

Engine Coolant Thermostat

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4 Thermostats found

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Saturn Ion Thermostat Assembly, Engine Coolant
Part Number: 12622410
$77.07 MSRP: $156.38
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Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 21018811, 90537453, 55350941, 12615097
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2007 Saturn Ion | 2 DOOR, 4 DOOR, REDLINE 2 DOOR | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L
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Saturn Ion Housing Assembly, Engine Coolant Thermostat
Part Number: 12597172
$91.52 MSRP: $192.27
You Save: $100.75 (53%)
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Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Water Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Saturn Ion | 2 DOOR, 4 DOOR, REDLINE 2 DOOR | 4 Cyl 2.2L, 4 Cyl 2.4L
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Saturn Ion Housing Asm,Engine Coolant Thermostat
Part Number: 12583152
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Saturn Ion | REDLINE 2 DOOR | 4 Cyl 2.0L
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Saturn Ion Housing Assembly, Engine Coolant Thermostat
Part Number: 12584898
Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing
- Replaces: 13104425
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 Saturn Ion | 2 DOOR, 4 DOOR, REDLINE 2 DOOR | 4 Cyl 2.2L

Saturn Ion Thermostat Parts Questions & Experts Answers

Housing Assembly, Engine Coolant Thermostat
12597172
Q: How to replace a thermostat in a cooling system for Chevrolet Cobalt,HHR,Saturn ION and Pontiac G5?
A: Before faulting the thermostat, check the coolant level, drive belt tension, and temperature gauge. To replace the thermostat, disconnect the battery's negative terminal and drain the coolant. Detach the hoses from the thermostat housing cover. Remove the thermostat and install a new gasket.