How to service and repair the coolant reservoir, specifically for surge tank replacement on Cadillac STS?

Service work on the coolant reservoir needs you to drain the coolant as your first step before replacing the surge tank. Press the master cylinder fluid level sensor electrical connector to one side as you work on it. Remove the surge tank outlet hose clamp through the Hose Clamp Pliers (J38185) before moving the clamp to a new position to detach the outlet hose. Service technicians need to use Hose Clamp Pliers (J38185) to disconnect and reposition the surge tank inlet hose clamp before disconnecting the surge tank inlet hose. First remove the surge tank nut and bolt before disconnecting the electrical connector to the low coolant sensor to extract the surge tank. Start by reinstalling the surge tank where it belongs and reconnect the low coolant sensor electrical connector. Tighten the surge tank nut to 9 Nm (80 inch lbs.) before you tighten the surge tank bolt to the exact same specification. You should apply clean coolant onto the inside of the hoses before attachment. Connect the surge tank inlet hose to its compartment while using Hose Clamp Pliers (J38185) to reset and secure the hose clamp position. After securing the surge tank outlet hose with Hose Clamp Pliers (J38185) once more, continue with installation. Reconnect the master cylinder fluid level sensor electrical connector before you begin filling the cooling system.

OEM Cadillac STS Coolant Reservoir

Coolant Tank Reservoir

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5 Coolant Reservoirs found

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Cadillac STS Reservoir Tank Part Number: 15882261
Product Specifications
- Other Name: Container, Heater Coolant Tank; Coolant Reservoir; Reservoir; Tank, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2011 Cadillac STS | Base, Platinum, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS Reservoir Part Number: 25884797
Product Specifications
- Other Name: Reservoir, Turbocharger/Supercharger Cooling; Coolant Reservoir
- Replaces: 22697069
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009 Cadillac STS | V | 8 Cyl 4.4 L GAS
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Cadillac STS Reservoir Tank Part Number: 25767641
Product Specifications
- Other Name: Tank, Radiator Surge; Coolant Reservoir; Reservoir; Tank, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Cadillac STS | Base, V | 6 Cyl 3.6 L GAS, 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS Reservoir Tank Part Number: 15875447
Product Specifications
- Other Name: Container, Heater Coolant Tank; Coolant Reservoir; Reservoir; Tank, Engine Coolant Recovery
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2010 Cadillac STS | Base, Platinum | 6 Cyl 3.6 L GAS, 8 Cyl 4.6 L GAS
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Cadillac STS Reservoir Part Number: 10366756
Product Specifications
- Other Name: Reservoir, Turbocharger/Supercharger Cooling; Coolant Reservoir
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Cadillac STS | V | 8 Cyl 4.4 L GAS

Cadillac STS Coolant Reservoir

Want to cut long-term maintenance and repair costs? Choose OEM Coolant Reservoir. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Cadillac STS parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Cadillac STS Coolant Reservoir includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Coolant Reservoir is among the engine cooling system of Cadillac STS vehicles mainly built to be durable and efficient. It further controls specialized quantities of excess coolant fluid and ensures that no air gets into the system which, when rusts and corrodes, may cause fatal antifreeze leakage. Cadillac STS vehicles utilize two primary types of Coolant Reservoirs: pressurized coolant overflow tank and the pressurized coolant expansion tank with both being capable of holding coolant that has undergone pressurization as well as being capable of absorbing temperature changes. It has been deemed advisable that the Coolant Reservoir should be inspected frequently because of its significance in the performance and life expectancy of the machine. The Cadillac STS a mid-size luxury sedan was launched in 1988 and has been received favourable response from the customers for its unique styling and robust engine that is available in 295 hp Northstar V8. The Coolant Reservoir therefore has an important contribution to the Cadillac STS enhancing its efficiency and safety by catering for the temperatures that the engine requires for efficiency. Their molded graduations can be used to monitor levels of coolant easily and this is accompanied by constant reminders on maintenance. In the automotive industry Coolant Reservoir has gained high popularity among automobile owners because of resilience and universality, which allows to maintain STS models' performance and comfort up to the Cadillac's standards. Coolant Reservoir: With such features that are engineered to meet the key factors of reliability and safety in designs the Cadillac STS is exhibit of Cadillac's standard in engineering and designing.

Cadillac STS Coolant Reservoir Parts and Q&A

Reservoir Tank
25767641
Q: How to service and repair the coolant reservoir, specifically for surge tank replacement on Cadillac STS?
A:
Service work on the coolant reservoir needs you to drain the coolant as your first step before replacing the surge tank. Press the master cylinder fluid level sensor electrical connector to one side as you work on it. Remove the surge tank outlet hose clamp through the Hose Clamp Pliers (J38185) before moving the clamp to a new position to detach the outlet hose. Service technicians need to use Hose Clamp Pliers (J38185) to disconnect and reposition the surge tank inlet hose clamp before disconnecting the surge tank inlet hose. First remove the surge tank nut and bolt before disconnecting the electrical connector to the low coolant sensor to extract the surge tank. Start by reinstalling the surge tank where it belongs and reconnect the low coolant sensor electrical connector. Tighten the surge tank nut to 9 Nm (80 inch lbs.) before you tighten the surge tank bolt to the exact same specification. You should apply clean coolant onto the inside of the hoses before attachment. Connect the surge tank inlet hose to its compartment while using Hose Clamp Pliers (J38185) to reset and secure the hose clamp position. After securing the surge tank outlet hose with Hose Clamp Pliers (J38185) once more, continue with installation. Reconnect the master cylinder fluid level sensor electrical connector before you begin filling the cooling system.