2009 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 for the 2009 Cadillac CTS come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL. Every part fits both the 3.6L V6 and the 6.2L V8 Supercharged.

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 Coolant Air Bleed Hose pipes. Read more

2 Coolant Air Bleed Hose / Pipe parts for the 2009 Cadillac CTS come from GM GENUINE.

Listed part numbers: GM GENUINE 12606243 and GM GENUINE 12614997.

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

One part is listed for the 2009 Cadillac CTS — GM GENUINE 12602048.

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

5 Coolant Hose / Pipe parts for the 2009 Cadillac CTS come from 2 brands — GM GENUINE and CONTINENTAL.

The Economy section: 1 option from CONTINENTAL. CONTINENTAL 50277 is listed in this group.

Standard Replacement: 2 parts, from GM GENUINE. A representative part number is GM GENUINE 12633398.

2 further parts sit outside the graded sections, with the same engine-level match.

Part numbers include CONTINENTAL 50277, GM GENUINE 12633398 and GM GENUINE 25880392, 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

4 Coolant Hose / Pipe Seal parts are listed for the 2009 Cadillac CTS, from 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

2 Coolant Hose Connector / Flange parts for the 2009 Cadillac CTS come from GM GENUINE.

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

One part is listed for the 2009 Cadillac CTS — 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

One part is listed for the 2009 Cadillac CTS — AJUSA 01154600.

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

TECHPRO supplies both parts for the 2009 Cadillac CTS. All of them fit every engine offered in the 2009 CTS.

Listed part numbers: 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 are listed for the 2009 Cadillac CTS, from MOTORAD, AUTOTECNICA and GM GENUINE. 3 parts fit every engine; the other 1 is engine-specific.

This group includes AUTOTECNICA GM0613026, GM GENUINE 15076936 and MOTORAD T46 and the remaining parts above.

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

This group shows a single part: 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

This group shows a single part: GM GENUINE 12623461.

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

3 Coolant Water Crossover Mounting Set parts for the 2009 Cadillac CTS come from 3 brands — FEL-PRO, MAHLE / CLEVITE and VICTOR REINZ.

Listed part numbers: FEL-PRO ES73027, MAHLE / CLEVITE GS33845 and VICTOR REINZ 181002301.

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

4 Cooling System Tester Adapter parts for the 2009 Cadillac CTS come from 2 brands — GATES and MOTORAD. Every part fits both the 3.6L V6 and the 6.2L V8 Supercharged.

Listed part numbers: GATES 31431, GATES 31391 and MOTORAD 3128, plus the other parts above.

This table covers the Hose clamps. Read more

3 Hose Clamp parts for the 2009 Cadillac CTS come from GM GENUINE.

This group includes GM GENUINE 90530642, GM GENUINE 11570868 and GM GENUINE 11570870.

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

2 Intercooler parts for the 2009 Cadillac CTS come from GM GENUINE.

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

This table covers the Intercooler covers. Read more

One part is listed for the 2009 Cadillac CTS — 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 are listed for the 2009 Cadillac CTS, from ELRING and GM GENUINE.

Listed part numbers: 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

One part is listed for the 2009 Cadillac CTS — 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

16 Radiator parts for the 2009 Cadillac CTS come from 12 brands — DENSO, AGILITY, OSC and 9 other brands. The "Popular" part is ULTRA-POWER 13285.

The Economy section: 2 options from ULTRA-POWER and GPD. ULTRA-POWER 13285 is listed in this group.

Standard Replacement: 4 parts, from DENSO, AGILITY, OSC and 1 other brand. A representative part number is DENSO 2219293.

10 further parts sit outside the graded sections, 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 for the 2009 Cadillac CTS come from 2 brands — ACDELCO and GATES. Every part fits both the 3.6L V6 and the 6.2L V8 Supercharged.

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

10 Radiator Fan Assembly parts are listed for the 2009 Cadillac CTS, from UAC, VDO / CONTINENTAL, SKP and 5 other brands. SKP SK620567 carries the "Popular" badge. 1 part fits every engine; the other 9 are engine-specific.

Economy: 4 parts, from SKP, DORMAN, GPD and 1 other brand. A representative part number is SKP SK620567.

The Standard Replacement section: 6 options from UAC, VDO / CONTINENTAL, AGILITY and 1 other brand. AGILITY 6010030 is listed in this group.

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

GM GENUINE supplies both parts for the 2009 Cadillac CTS.

Listed part numbers: GM GENUINE 19435353 and GM GENUINE 19129773.

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 2009 Cadillac CTS come from 3 brands — 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 are listed for the 2009 Cadillac CTS, from ACDELCO, DAYCO, GATES and 1 other brand. DAYCO 72650 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

35 Temperature Sender / Sensor parts for the 2009 Cadillac CTS come from 19 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, NTK and 16 other brands. The "Popular" part is SKP SKTX89. Economy, Full Service Kit and Standard Replacement are all represented, and Standard Replacement alone accounts for 24 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

19 Thermostat parts are listed for the 2009 Cadillac CTS, from MOTORAD, CALORSTAT, AUTOTECNICA and 6 other brands. GATES 34198 carries the "Popular" badge.

Economy: 2 parts, from AUTOTECNICA and SKP. A representative part number is AUTOTECNICA GM0718523.

The Heavy Duty section lists 2 options from MOTORAD — rated for severe service. MOTORAD 5523187 is listed in this group.

In the Performance grade, MOTORAD supplies 2 parts: engineered beyond original-equipment specification. A representative part number is MOTORAD 2523160.

The Standard Replacement section: 10 options from MOTORAD, CALORSTAT, GATES and 3 other brands. GATES 34198 is listed in this group.

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

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

33 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2009 Cadillac CTS come from 7 brands — FEL-PRO, MAHLE / CLEVITE, APEX and 4 other brands. The "Popular" part is APEX AWO2229. A list this long means Thermostat / Thermostat Housing / Water Outlet Seal applications vary by configuration — the notes carry the qualifiers.

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

One part is listed for the 2009 Cadillac CTS — ACDELCO 12706566.

This table covers the gaskets that seal the Water Inlet. 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: GM GENUINE 12587397.

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

29 Water Pump parts are listed for the 2009 Cadillac CTS, from GM GENUINE, GATES, GMB and 13 other brands. BECK/ARNLEY 1312378 carries the "Popular" badge. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by GM GENUINE, GATES, GMB and 6 other brands.

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

17 Water Pump Gasket parts for the 2009 Cadillac CTS come from 9 brands — FEL-PRO, VICTOR REINZ, GM GENUINE and 6 other brands. The "Popular" part is FEL-PRO 35859.

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

This group shows a single part: 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

5 Water Pump Seal / O-Ring parts are listed for the 2009 Cadillac CTS, from APEX, FEL-PRO, GM GENUINE and 2 other brands.

Listed part numbers: APEX AWP3151, FEL-PRO 35633 and GM GENUINE 12691259, plus the other parts above.