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ttiger79
ttiger79, Auto Mechanic
Category: Chevy
Satisfied Customers: 1257
Experience:  ASE Master Certified, Advanced Engine Performance
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finding and replacing a thermostat on a 2005 chevy malibu

Resolved Question:

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Submitted: 9 years ago.
Category: Chevy
Expert:  ttiger79 replied 9 years ago.
Hi!
Which motor do you have in your Malibu?
Customer: replied 9 years ago.
Reply to ttiger79's Post: 4 cylinder 2.2 liter
Expert:  ttiger79 replied 9 years ago.
Ok,
The thermostat is located on the back side of the motor- where the coolant crossover tube runs into the water pump. Here's a picture of the housing:
graphic
Here's the replacement procedure:
1. Drain the cooling system.

graphic

2. Remove the thermostat housing to water pump feed pipe bolts.

graphic
3. Remove the thermostat housing to water pump feed pipe.

graphic
4. Remove the thermostat and retaining sleeve, noting orientation for installation.

To install:
graphic
1. Install the thermostat and retaining sleeve with the dimple placed into the housing slot.

graphic
2. Important: Lubricate the O-rings with coolant ONLY. Install the thermostat housing to water pump feed pipe.

graphic
3. Notice: Refer to Fastener Notice in Service Precautions. Install the thermostat housing to water pump feed pipe bolt.

o Tighten the bolt to 10 Nm (18 inch lbs.) .

4. Fill the cooling system.

Let me know if you have any more questions!
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