2011 Cadillac CTS 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 are listed for the 2011 Cadillac CTS, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge. All of them fit every engine offered in the 2011 CTS.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PEAK, PRESTONE and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 4 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 7 options from VALVOLINE, PRESTONE, ACDELCO and 2 other brands — built to original-equipment specification. ACDELCO 105027 is listed in this group.

This table covers the Coolant Air Bleed Hose pipes. Read more

GM GENUINE supplies both parts for the 2011 Cadillac CTS.

Part numbers include GM GENUINE 12606243 and GM GENUINE 12614997.

This table covers the bleeders used to purge air from the coolant circuit. Read more

This group shows a single part: GM GENUINE 12602048.

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

GM GENUINE supplies both parts for the 2011 Cadillac CTS.

This group includes GM GENUINE 12633398 and GM GENUINE 25880392.

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

4 Coolant Hose / Pipe Seal parts for the 2011 Cadillac CTS come from 2 brands — ELRING and GM GENUINE. 2 parts fit every engine; the other 2 are engine-specific.

This group includes ELRING 943630, ELRING 868630 and ELRING 857680 and the remaining parts above.

This table covers the Coolant Hose Connector flanges. Read more

GM GENUINE supplies both parts for the 2011 Cadillac CTS.

Part numbers include GM GENUINE 25891276 and GM GENUINE 25891275.

This table covers the seals at the Coolant Hose Connector / Flange. 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: ELRING 943020.

This table covers the gaskets that seal the Coolant Pipe. 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

This group shows a single part: AJUSA 01154600.

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

2 Coolant Reservoir parts for the 2011 Cadillac CTS come from TECHPRO. Every part fits all 3 engine options (3.0L V6, 3.6L V6 and 6.2L V8 Supercharged).

Part numbers include TECHPRO GM3014154 and TECHPRO GM3014155.

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

4 Coolant Reservoir Cap parts for the 2011 Cadillac CTS come from 3 brands — MOTORAD, AUTOTECNICA and GM GENUINE. 1 part fits every engine; the other 3 are engine-specific.

Listed part numbers: AUTOTECNICA GM0613026, GM GENUINE 15076936 and MOTORAD T46, plus the other parts above.

This table covers the Coolant Reservoir retainers and clips. Read more

One part is listed for the 2011 Cadillac CTS — GM GENUINE 11610704.

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

One part is listed for the 2011 Cadillac CTS — GM GENUINE 12623461.

This table covers the Coolant Water Crossover Mounting sets. Read more

3 Coolant Water Crossover Mounting Set parts are listed for the 2011 Cadillac CTS, from FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Part numbers include FEL-PRO ES73027, MAHLE / CLEVITE GS33845 and VICTOR REINZ 181002301.

This table covers the Cooling Fan control modules. Read more

3 Cooling Fan Control Module parts for the 2011 Cadillac CTS come from US MOTOR WORKS.

Listed part numbers: 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 are listed for the 2011 Cadillac CTS, from GATES and MOTORAD. All of them fit every engine offered in the 2011 CTS.

Part numbers include GATES 31431, GATES 31391 and MOTORAD 3128, among others listed above.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 3 Hose Clamp parts for the 2011 Cadillac CTS.

Listed part numbers: GM GENUINE 90530642, GM GENUINE 11570868 and GM GENUINE 11570870.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

GM GENUINE supplies both parts for the 2011 Cadillac CTS.

Listed part numbers: GM GENUINE 12604853 and GM GENUINE 25876663.

This table covers the Intercooler covers. Read more

This group shows a single part: GM GENUINE 12631035.

This table covers the gaskets that seal the Intercooler. 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 Intercooler Gasket parts for the 2011 Cadillac CTS come from 2 brands — ELRING and GM GENUINE.

This group includes ELRING 857650 and GM GENUINE 12613457.

This table covers the seals at the Intercooler. 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 12608997.

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

25 Radiator parts are listed for the 2011 Cadillac CTS, from GPD, DENSO, AGILITY and 9 other brands. ULTRA-POWER 13285 carries the "Popular" badge.

Economy: 4 parts, from GPD and ULTRA-POWER. A representative part number is ULTRA-POWER 13285.

The Standard Replacement section: 13 options from DENSO, AGILITY, SPECTRA PREMIUM and 7 other brands. DENSO 2219239 is listed in this group.

8 ungrouped parts are not assigned to a grade, with the same engine-level match.

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 are listed for the 2011 Cadillac CTS, from ACDELCO and GATES. All of them fit every engine offered in the 2011 CTS.

Listed part numbers: 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 for the 2011 Cadillac CTS come from 9 brands — SKP, GPD, TECHPRO and 6 other brands. The "Popular" part is SKP SK620567. 3 parts fit every engine; the other 6 are engine-specific.

The Economy section: 4 options from SKP, GPD, TECHPRO and 1 other brand. SKP SK620567 is listed in this group.

Standard Replacement: 5 parts, from AGILITY, FOUR SEASONS, TYC and 2 other brands. A representative part number is AGILITY 6010030.

Part numbers include SKP SK620567, GPD 2811881 and TECHPRO GM3115262, 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

This group shows a single part: GM GENUINE 19435353.

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

One part is listed for the 2011 Cadillac CTS — GM GENUINE 1581137.

This table covers the Radiator Fan resistors. Read more

3 Radiator Fan Resistor parts are listed for the 2011 Cadillac CTS, from AUTOTECNICA, GM GENUINE and STANDARD MOTOR PRODUCTS.

This group includes 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

10 Radiator Hose parts for the 2011 Cadillac CTS come from 4 brands — ACDELCO, DAYCO, CONTINENTAL and 1 other brand. The "Popular" part is ACDELCO 27033X.

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

29 Temperature Sender / Sensor parts are listed for the 2011 Cadillac CTS, from WALKER PRODUCTS, STANDARD MOTOR PRODUCTS, NTK and 12 other brands. WALKER PRODUCTS 21191118 carries the "Popular" badge. Economy, Full Service Kit and Standard Replacement are all represented, and Standard Replacement alone accounts for 21 parts.

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

4 Thermostat parts for the 2011 Cadillac CTS come from 3 brands — MOTORAD, FOUR SEASONS and GATES.

Listed part numbers: FOUR SEASONS 86202, GATES 34163 and MOTORAD 735180, 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

28 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2011 Cadillac CTS, from FEL-PRO, GM GENUINE, MAHLE / CLEVITE and 4 other brands. FEL-PRO 35858 carries the "Popular" badge. The notes list position, dimensions and spec qualifiers wherever the manufacturer distinguishes between variants.

This table covers the housings and outlets the thermostat sits in. Read more

3 Thermostat Housing / Water Outlet parts for the 2011 Cadillac CTS come from 3 brands — ACDELCO, GM GENUINE and MOTORAD.

This group includes ACDELCO 12706566, GM GENUINE 1511056 and MOTORAD CH3140.

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

15 Water Pump parts for the 2011 Cadillac CTS come from 14 brands — GM GENUINE, BECK/ARNLEY, SKP and 11 other brands. The "Popular" part is BECK/ARNLEY 1312378.

The Economy section: 7 options from BECK/ARNLEY, SKP, CARTER and 4 other brands. BECK/ARNLEY 1312378 is listed in this group.

Standard Replacement: 8 parts, from GM GENUINE, ACDELCO, AISIN and 4 other brands. A representative part number is GM GENUINE 12739553.

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

6 Water Pump Gasket parts are listed for the 2011 Cadillac CTS, from FEL-PRO, GM GENUINE, APEX and 3 other brands. FEL-PRO 35859 carries the "Popular" badge.

This group includes FEL-PRO 35859, GM GENUINE 2512052 and APEX AWP3231 and the remaining parts above.

This table covers the Water Pump pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt. Read more

One part is listed for the 2011 Cadillac CTS — GM GENUINE 12611587.

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

This group shows a single part: GM GENUINE 12691259.