How to service and repair the coolant reservoir on 2003 Cadillac DeVille?

The coolant reservoir is serviceable and repairable, however, the first step entails draining the engine coolant partially. Disconnect the surge tank inlet hose and the coolant level sensor connector. Take out the secondary AIR relay bracket and the outlet hose of the surge tank. Next, take off the surge tank and place it back in with all connections.

OEM 2003 Cadillac DeVille Coolant Reservoir

Coolant Tank Reservoir

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1 Coolant Reservoir found

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2003 Cadillac DeVille Reservoir Tank Part Number: 25774005
Product Specifications
- Other Name: Container, Heater Coolant Tank; Coolant Reservoir; Recovery Tank; Tank, Engine Coolant Recovery
- Replaces: 25748905, 25741919, 25654619
- Item Weight: 2.60 Pounds
- Item Dimensions: 24.8 x 15.5 x 12.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 25774005
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Cadillac DeVille Submodels:
- Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS

2003 Cadillac DeVille Coolant Reservoir

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2003 Cadillac DeVille Coolant Reservoir Parts and Q&A

Q: How to service and repair the coolant reservoir on 2003 Cadillac DeVille?
A: The coolant reservoir is serviceable and repairable, however, the first step entails draining the engine coolant partially. Disconnect the surge tank inlet hose and the coolant level sensor connector. Take out the secondary AIR relay bracket and the outlet hose of the surge tank. Next, take off the surge tank and place it back in with all connections.