2015 Cadillac XTS 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 2015 Cadillac XTS 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 3.6L V6 Turbocharged.

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

3 Coolant Air Bleed Hose / Pipe parts for the 2015 Cadillac XTS come from GM GENUINE.

This group includes GM GENUINE 12637185, GM GENUINE 12637183 and GM GENUINE 12638449.

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

2 Coolant Air Bleeder parts are listed for the 2015 Cadillac XTS, from DORMAN and GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include DORMAN 626588 and GM GENUINE 13267637.

This table covers the Coolant Bleed Hose fittings. Read more

2 Coolant Bleed Hose Fitting parts for the 2015 Cadillac XTS come from GM GENUINE.

Part numbers include GM GENUINE 12637187 and GM GENUINE 12637192.

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

6 Coolant Hose / Pipe parts for the 2015 Cadillac XTS come from 2 brands — GM GENUINE and CONTINENTAL. The "Popular" part is CONTINENTAL 64310. 3 parts fit every engine; the other 3 are engine-specific.

Listed part numbers: CONTINENTAL 64310, CONTINENTAL 63080 and GM GENUINE 22965100, plus the other parts 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

2 Coolant Hose / Pipe Seal parts are listed for the 2015 Cadillac XTS, from ELRING and GM GENUINE. 1 part fits every engine; the other 1 is engine-specific.

Part numbers include ELRING 943630 and GM GENUINE 12640401.

This table covers the Coolant Hose Connector flanges. Read more

3 Coolant Hose Connector / Flange parts for the 2015 Cadillac XTS come from 3 brands — DORMAN, GM GENUINE and MOTORAD. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

The Economy section: 1 option from DORMAN. DORMAN 9022091 is listed in this group.

Standard Replacement: 2 parts, from GM GENUINE and MOTORAD. A representative part number is GM GENUINE 20847910.

This group includes DORMAN 9022091, GM GENUINE 20847910 and MOTORAD CH2091.

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 2015 Cadillac XTS — AJUSA 01154600.

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

7 Coolant Reservoir parts are listed for the 2015 Cadillac XTS, from TECHPRO, DORMAN, AUTOTECNICA and 3 other brands. DORMAN 603385 carries the "Popular" badge. All of them fit every engine offered in the 2015 XTS.

Listed part numbers: DORMAN 603385, AUTOTECNICA GM0713819 and GM GENUINE 22950436, plus the other parts above.

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

8 Coolant Reservoir Cap parts are listed for the 2015 Cadillac XTS, from AUTOTECNICA, DORMAN, SKP and 4 other brands. DORMAN 54218 carries the "Popular" badge. 6 parts fit every engine; the other 2 are engine-specific.

Part numbers include DORMAN 54218, SKP SK54218 and AUTOTECNICA GM0714619, among others listed above.

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

This group shows a single part: GM GENUINE 13284504.

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

2 Cooling System Tester Adapter parts for the 2015 Cadillac XTS come from MOTORAD. Every part fits both the 3.6L V6 and the 3.6L V6 Turbocharged.

This group includes MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

6 Hose Clamp parts for the 2015 Cadillac XTS come from GM GENUINE. The "Popular" part is GM GENUINE 90572594. 3 parts fit every engine; the other 3 are engine-specific.

Part numbers include GM GENUINE 90572594, GM GENUINE 13162312 and GM GENUINE 90572587, among others listed above.

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

5 Intercooler parts for the 2015 Cadillac XTS come from 3 brands — TECHPRO, GM GENUINE and GPD. 1 part fits every engine; the other 4 are engine-specific.

The Economy section: 1 option from TECHPRO. TECHPRO GM3012115 is listed in this group.

Standard Replacement: 2 parts, from GM GENUINE. A representative part number is GM GENUINE 12640408.

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

This group includes TECHPRO GM3012115, GM GENUINE 12640408 and GM GENUINE 20982750 and the remaining parts above.

This table covers the Intercooler Air Hose pipes. Read more

This group shows a single part: GM GENUINE 12643106.

This table covers the Intercooler covers. Read more

One part is listed for the 2015 Cadillac XTS — GM GENUINE 12661212.

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 2015 Cadillac XTS come from 9 brands — KOYORAD, DENSO, TYC and 6 other brands. The "Popular" part is DENSO 2219328. 2 parts fit every engine; the other 9 are engine-specific.

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

3 Radiator Cap parts for the 2015 Cadillac XTS come from 3 brands — ACDELCO, GM GENUINE and PROFESSIONAL PARTS SWEDEN. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include ACDELCO RC124, GM GENUINE 15544596 and PROFESSIONAL PARTS SWEDEN 21342353.

This table covers the petcocks used to drain the radiator. Read more

One part is listed for the 2015 Cadillac XTS — GM GENUINE 22790134.

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 2015 Cadillac XTS, from GM GENUINE, SKP, GPD and 5 other brands. SKP SK620971 carries the "Popular" badge. 4 parts fit every engine; the other 6 are engine-specific.

Economy: 3 parts, from SKP, GPD and TECHPRO. A representative part number is SKP SK620971.

The Standard Replacement section: 7 options from GM GENUINE, FOUR SEASONS, TYC and 2 other brands. FOUR SEASONS 76300 is listed in this group.

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

13 Radiator Hose parts are listed for the 2015 Cadillac XTS, from ACDELCO, GATES, CONTINENTAL and 2 other brands. ACDELCO 23203513 carries the "Popular" badge. 11 parts fit every engine; the other 2 are engine-specific.

This table covers the Radiator insulators. Read more

One part is listed for the 2015 Cadillac XTS — GM GENUINE 13306606.

This table covers the Radiator mounts. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

One part is listed for the 2015 Cadillac XTS — GM GENUINE 52493483.

This table covers the Radiator Mount bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles. Read more

3 Radiator Mount Bushing parts are listed for the 2015 Cadillac XTS, from DORMAN, SKP and ULTRA-POWER. 2 parts fit every engine; the other 1 is engine-specific.

Part numbers include DORMAN 926280 and SKP SK926280, among others listed above.

This table covers the seals at the Radiator. 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

GM GENUINE supplies both parts for the 2015 Cadillac XTS.

Listed part numbers: GM GENUINE 20942543 and GM GENUINE 22826569.

This table covers the Radiator Upper Air Baffle retainers and clips. Read more

DORMAN supplies both parts for the 2015 Cadillac XTS. All of them fit every engine offered in the 2015 XTS.

This group includes DORMAN 700365 and DORMAN 963058.

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

21 Temperature Sender / Sensor parts for the 2015 Cadillac XTS come from 13 brands — WALKER PRODUCTS, HOLSTEIN, GM GENUINE and 10 other brands. The "Popular" part is GPD 1712489. 7 parts fit every engine; the other 14 are engine-specific.

The Economy section: 5 options from HOLSTEIN, GPD, UNITED MOTOR PRODUCTS and 1 other brand. GPD 1712489 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 21191118 is listed in this group.

Standard Replacement: 15 parts, from GM GENUINE, WALKER PRODUCTS, FACET and 6 other brands. A representative part number is BECK/ARNLEY 1580733.

This table covers the Temperature Sender / Sensor clips. Read more

This group shows a single part: DORMAN 66264.

This table covers the Temperature Sender / Sensor 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 12639042.

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 2015 Cadillac XTS, from MOTORAD, AUTOTECNICA, SKP and 3 other brands. GATES 34841 carries the "Popular" badge. 3 parts fit every engine; the other 4 are engine-specific.

Economy: 2 parts, from AUTOTECNICA and SKP. A representative part number is AUTOTECNICA GM0720267.

The Standard Replacement section: 4 options from MOTORAD, GATES and FOUR SEASONS. GATES 34841 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: GATES 34841, AUTOTECNICA GM0720267 and SKP SK902693, 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

20 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2015 Cadillac XTS come from 6 brands — FEL-PRO, APEX, VICTOR REINZ and 3 other brands. The "Popular" part is FEL-PRO 35855. 18 parts fit every engine; the other 2 are engine-specific.

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

6 Thermostat Housing / Water Outlet parts are listed for the 2015 Cadillac XTS, from GM GENUINE, GATES, MOTORAD and 1 other brand. 2 parts fit every engine; the other 4 are engine-specific.

This group includes GATES CO35096, GM GENUINE 1511053 and GM GENUINE 1581939 and the remaining parts 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

14 Water Pump parts are listed for the 2015 Cadillac XTS, from GM GENUINE, SKP, CARTER and 9 other brands. SKP SK1305130 carries the "Popular" badge. 12 parts fit every engine; the other 2 are engine-specific.

Economy: 6 parts, from SKP, CARTER, ENGINETECH and 3 other brands. A representative part number is SKP SK1305130.

The Standard Replacement section: 8 options from GM GENUINE, GATES, ACDELCO and 3 other brands. GATES 43530 is listed in this group.

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

5 Water Pump Gasket parts for the 2015 Cadillac XTS come from 5 brands — GM GENUINE, APEX, FEL-PRO and 2 other brands. The "Popular" part is GM GENUINE 2512052. 4 parts fit every engine; the other 1 is engine-specific.

Listed part numbers: GM GENUINE 2512052, APEX AWP3231 and FEL-PRO 35859, plus the other 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

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

One part is listed for the 2015 Cadillac XTS — GM GENUINE 12691259.