2010 Cadillac STS Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

16 Coolant / Antifreeze parts for the 2010 Cadillac STS come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 4 options from FVP, PEAK, PRESTONE and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.

In the Premium grade, PRESTONE and PEAK supply 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, VALVOLINE, PRESTONE, ACDELCO and 2 other brands supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO 105027.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

5 Coolant Hose / Pipe parts for the 2010 Cadillac STS come from 4 brands — GATES, CONTINENTAL, ACDELCO and 1 other brand. The "Popular" part is CONTINENTAL 61267.

Part numbers include CONTINENTAL 61267, ACDELCO 20149S and DAYCO 71709, among others listed above.

This table covers the seals at the Coolant Hose / Pipe. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

One part is listed for the 2010 Cadillac STS — ELRING 943630.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

2 Coolant Reservoir parts are listed for the 2010 Cadillac STS, from DORMAN and SKP.

Listed part numbers: DORMAN 603141 and SKP SK603141.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

One part is listed for the 2010 Cadillac STS — MOTORAD T46.

This table covers the seals at the Coolant Reservoir. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

This group shows a single part: GM GENUINE 12623461.

This table covers the Cooling Fan control modules. Read more

US MOTOR WORKS supplies the 3 Cooling Fan Control Module parts for the 2010 Cadillac STS.

Part numbers include US MOTOR WORKS 16749, US MOTOR WORKS 16789 and US MOTOR WORKS 16795.

This table covers the adapters used to pressure-test this cooling system. Read more

4 Cooling System Tester Adapter parts for the 2010 Cadillac STS come from 2 brands — GATES and MOTORAD.

This group includes GATES 31431, GATES 31391 and MOTORAD 3128 and the remaining parts above.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

11 Radiator parts for the 2010 Cadillac STS come from 8 brands — GPD, AGILITY, OSC and 5 other brands. The "Popular" part is ULTRA-POWER 13114.

The Economy section: 4 options from GPD, ULTRA-POWER and FAMOUS BRAND. ULTRA-POWER 13114 is listed in this group.

Standard Replacement: 7 parts, from AGILITY, OSC, DENSO and 2 other brands. A representative part number is DENSO 2219241.

This table covers the caps that hold system pressure at the radiator or reservoir neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

2 Radiator Cap parts for the 2010 Cadillac STS come from 2 brands — ACDELCO and GATES.

This group includes ACDELCO RC116 and GATES 31532.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

9 Radiator Fan Assembly parts are listed for the 2010 Cadillac STS, from FOUR SEASONS, DORMAN, SKP and 5 other brands. DORMAN 620958 carries the "Popular" badge.

Economy: 3 parts, from DORMAN, SKP and GPD. A representative part number is DORMAN 620958.

The Standard Replacement section: 6 options from FOUR SEASONS, AGILITY, TYC and 2 other brands. AGILITY 6010030 is listed in this group.

Part numbers include DORMAN 620958, SKP SK620567 and GPD 2811881, among others listed above.

This table covers the Radiator Fan blades. Typical signs include chatter, streaks, or a skip at the top of the stroke. Confirm left and right lengths in the notes — they are often different. Read more

One part is listed for the 2010 Cadillac STS — GM GENUINE 19435353.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

7 Radiator Fan Clutch parts for the 2010 Cadillac STS come from 6 brands — FVP, HAYDEN, US MOTOR WORKS and 3 other brands. The "Popular" part is HAYDEN 2982.

Listed part numbers: HAYDEN 2982, US MOTOR WORKS 22632 and FOUR SEASONS 46132, plus the other parts above.

This table covers the Radiator Fan motors. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor. Read more

This group shows a single part: GM GENUINE 1581137.

This table covers the Radiator Fan resistors. Read more

3 Radiator Fan Resistor parts for the 2010 Cadillac STS come from 3 brands — AUTOTECNICA, GM GENUINE and STANDARD MOTOR PRODUCTS.

Part numbers include AUTOTECNICA GM1320083, GM GENUINE 25881844 and STANDARD MOTOR PRODUCTS RY2010.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

12 Radiator Hose parts are listed for the 2010 Cadillac STS, from GATES, DAYCO, CONTINENTAL and 1 other brand. DAYCO 72711 carries the "Popular" badge.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

22 Temperature Sender / Sensor parts for the 2010 Cadillac STS come from 17 brands — STANDARD MOTOR PRODUCTS, NTK, WALKER PRODUCTS and 14 other brands. The "Popular" part is NTK EF0008.

The Economy section: 8 options from NTK, STANDARD MOTOR PRODUCTS, GPD and 5 other brands. NTK EF0008 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 21191012 is listed in this group.

Standard Replacement: 13 parts, from STANDARD MOTOR PRODUCTS, WELLS, ACDELCO and 8 other brands. A representative part number is ACDELCO 1551107.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

7 Thermostat parts are listed for the 2010 Cadillac STS, from MOTORAD, GATES, AISIN and 2 other brands. GATES 33808 carries the "Popular" badge.

The Heavy Duty section lists 1 option from MOTORAD — rated for severe service. MOTORAD 5339180 is listed in this group.

The Premium section: 1 option from MOTORAD. MOTORAD 7339180 is listed in this group.

The Standard Replacement section: 5 options from GATES, MOTORAD, AISIN and 2 other brands. GATES 33808 is listed in this group.

Listed part numbers: GATES 33808, MOTORAD 5339180 and MOTORAD 7339180, plus the other parts above.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

9 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2010 Cadillac STS come from 6 brands — FEL-PRO, APEX, VICTOR REINZ and 3 other brands. The "Popular" part is FEL-PRO 35660.

Part numbers include FEL-PRO 35660, FEL-PRO 35863 and APEX AWO2089, among others listed above.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

8 Water Pump parts are listed for the 2010 Cadillac STS, from FVP, US MOTOR WORKS, AIRTEX and 4 other brands. US MOTOR WORKS US8955 carries the "Popular" badge.

Economy: 3 parts, from US MOTOR WORKS, AIRTEX and FVP. A representative part number is US MOTOR WORKS US8955.

The Standard Replacement section: 5 options from ACDELCO, AISIN, FVP and 2 other brands. ACDELCO 252890 is listed in this group.

This group includes US MOTOR WORKS US8955 and AIRTEX AW6239 and the remaining parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

2 Water Pump Gasket parts for the 2010 Cadillac STS come from 2 brands — APEX and VICTOR REINZ.

This group includes APEX AWP3309 and VICTOR REINZ 711603300.

This table covers the Water Pump Seal O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove. Read more

2 Water Pump Seal / O-Ring parts are listed for the 2010 Cadillac STS, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 35860 and MAHLE / CLEVITE K32433.