How to replace a thermostat in a cooling system?

To remove the thermostat, disconnect the cable from the negative terminal and drain the cooling system. Loosen the hose clamp and remove the hose from the thermostat housing, or the thermostat housing cover with the radiator hose attached if the clamp cannot be accessed and remove the thermostat cover mounting bolts and detach the housing cover.

Genuine Cadillac DTS Thermostat

Engine Coolant Thermostat

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2 Thermostats found

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Cadillac DTS Housing, Thermostat
Part Number: 1647540
$11.14 MSRP: $21.01
You Save: $9.87 (47%)
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Product Specifications
- Other Name: HOUSING, Engine Coolant Thermostat; Thermostat Housing, Water Outlet
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2011 Cadillac DTS | 4 DOOR, FUNERAL COACH, LIMOUSINE | 8 Cyl 4.6L
View related parts
Cadillac DTS Thermostat,Engine Coolant
Part Number: 12559807
$43.23 MSRP: $87.72
You Save: $44.49 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: THERMOSTAT, Engine Coolant Temperature; Thermostat
- Replaces: 3531407, 12555811, 12554784
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2011 Cadillac DTS | 4 DOOR, FUNERAL COACH, LIMOUSINE | 8 Cyl 4.6L

Cadillac DTS Thermostat Parts Questions & Experts Answers

Housing, Thermostat
1647540
Q: How to replace a thermostat in a cooling system?
A: To remove the thermostat, disconnect the cable from the negative terminal and drain the cooling system. Loosen the hose clamp and remove the hose from the thermostat housing, or the thermostat housing cover with the radiator hose attached if the clamp cannot be accessed and remove the thermostat cover mounting bolts and detach the housing cover.