2017 Cadillac CT6 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 2017 Cadillac CT6 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 Coolant Air Bleed Hose pipes. Read more

6 Coolant Air Bleed Hose / Pipe parts for the 2017 Cadillac CT6 come from GM GENUINE.

Part numbers include GM GENUINE 12634280, GM GENUINE 12683453 and GM GENUINE 84141562, among others listed above.

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

One part is listed for the 2017 Cadillac CT6 — GM GENUINE 20876185.

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

11 Coolant Hose / Pipe parts for the 2017 Cadillac CT6 come from 2 brands — GM GENUINE and ACDELCO. The "Popular" part is GM GENUINE 12627054.

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

5 Coolant Hose / Pipe Seal parts are listed for the 2017 Cadillac CT6, from GM GENUINE, FEL-PRO and MAHLE / CLEVITE.

Listed part numbers: FEL-PRO 36156, GM GENUINE 12627055 and GM GENUINE 12659280, plus the other parts above.

This table covers the Coolant Hose Connector flanges. Read more

2 Coolant Hose Connector / Flange parts for the 2017 Cadillac CT6 come from 2 brands — FOUR SEASONS and GM GENUINE.

Listed part numbers: FOUR SEASONS 86373 and GM GENUINE 23489856.

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 2017 Cadillac CT6 — ELRING 237180.

This table covers the Coolant Pipe adapters. Read more

One part is listed for the 2017 Cadillac CT6 — GM GENUINE 1534890.

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

GM GENUINE supplies both parts for the 2017 Cadillac CT6.

Listed part numbers: GM GENUINE 22885796 and GM GENUINE 22970513.

This table covers the brackets that mount the Coolant Reservoir. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners. Read more

GM GENUINE supplies both parts for the 2017 Cadillac CT6.

Part numbers include GM GENUINE 23118977 and GM GENUINE 23110407.

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

9 Coolant Reservoir Cap parts are listed for the 2017 Cadillac CT6, from MOTORAD, AUTOTECNICA, DORMAN and 3 other brands. DORMAN 54218 carries the "Popular" badge.

This group includes DORMAN 54218, SKP SK54218 and AUTOTECNICA GM0613026 and the remaining parts 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

3 Cooling System Tester Adapter parts for the 2017 Cadillac CT6 come from 2 brands — MOTORAD and GATES.

Part numbers include GATES 31391, MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

8 Hose Clamp parts for the 2017 Cadillac CT6 come from GM GENUINE. The "Popular" part is GM GENUINE 11570871.

Listed part numbers: GM GENUINE 11570871, GM GENUINE 90530642 and GM GENUINE 90572594, plus the other parts above.

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

4 Intercooler parts for the 2017 Cadillac CT6 come from GM GENUINE.

This group includes GM GENUINE 23385892, GM GENUINE 12673394 and GM GENUINE 12673393 and the remaining parts above.

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

GM GENUINE supplies both parts for the 2017 Cadillac CT6.

Listed part numbers: GM GENUINE 12652026 and GM GENUINE 12652017.

This table covers the Intercooler Hose / Pipe clamps. Read more

One part is listed for the 2017 Cadillac CT6 — GM GENUINE 12662824.

This table covers the Inverter coolers. Typical signs include overheated fluid, a leak at the fittings, or mixed fluids in the reservoir. Flush the lines when you replace a cooler. Read more

One part is listed for the 2017 Cadillac CT6 — GM GENUINE 23385893.

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

12 Radiator parts for the 2017 Cadillac CT6 come from 7 brands — GM GENUINE, KOYORAD, AGILITY and 4 other brands. The "Popular" part is GM GENUINE 21901.

The Economy section: 1 option from GPD. GPD 13623C is listed in this group.

Standard Replacement: 5 parts, from GM GENUINE, KOYORAD, AGILITY and 2 other brands. A representative part number is GM GENUINE 21901.

6 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

3 Radiator Cap parts for the 2017 Cadillac CT6 come from 3 brands — ACDELCO, GATES and PROFESSIONAL PARTS SWEDEN.

This group includes ACDELCO RC124, GATES 31569 and PROFESSIONAL PARTS SWEDEN 21342353.

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

One part is listed for the 2017 Cadillac CT6 — GM GENUINE 23444086.

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

4 Radiator Fan Assembly parts are listed for the 2017 Cadillac CT6, from TECHPRO, GPD and VEMO.

Part numbers include GPD 2812170, TECHPRO GM3115300 and TECHPRO GM3115302, among others listed above.

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 2017 Cadillac CT6, from ACDELCO and GM GENUINE.

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 2017 Cadillac CT6.

Part numbers include GM GENUINE 84067869 and GM GENUINE 84067870.

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

One part is listed for the 2017 Cadillac CT6 — DORMAN 961364.

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

18 Temperature Sender / Sensor parts for the 2017 Cadillac CT6 come from 9 brands — STANDARD MOTOR PRODUCTS, GPD, GM GENUINE and 6 other brands. The "Popular" part is GM GENUINE 12641073.

The Economy section: 8 options from GPD, VEMO, HOLSTEIN and 2 other brands. GPD 1712640 is listed in this group.

Standard Replacement: 10 parts, from GM GENUINE, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and 2 other brands. A representative part number is GM GENUINE 12641073.

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

15 Thermostat parts are listed for the 2017 Cadillac CT6, from GATES, AUTOTECNICA, SKP and 5 other brands. FOUR SEASONS 86323 carries the "Popular" badge.

Economy: 5 parts, from AUTOTECNICA, SKP and DORMAN. A representative part number is AUTOTECNICA GM0720261.

The Standard Replacement section: 9 options from FOUR SEASONS, GATES, MOTORAD and 2 other brands. FOUR SEASONS 86323 is listed in this group.

1 ungrouped part is 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

13 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2017 Cadillac CT6 come from 5 brands — GM GENUINE, FEL-PRO, ELRING and 2 other brands. The "Popular" part is GM GENUINE 12630780.

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

11 Thermostat Housing / Water Outlet parts are listed for the 2017 Cadillac CT6, from GATES, GM GENUINE, MOTORAD and 4 other brands. DORMAN 9022134 carries the "Popular" badge.

Economy: 2 parts, from DORMAN and SKP. A representative part number is DORMAN 9022134.

The Standard Replacement section: 4 options from GM GENUINE, FOUR SEASONS, GATES and 1 other brand. GM GENUINE 1581764 is listed in this group.

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

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

3 Water Inlet Gasket parts for the 2017 Cadillac CT6 come from 3 brands — FEL-PRO, GM GENUINE and MAHLE / CLEVITE.

Part numbers include FEL-PRO 36167, GM GENUINE 12647400 and MAHLE / CLEVITE C33508.

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

18 Water Pump parts are listed for the 2017 Cadillac CT6, from GATES, US MOTOR WORKS, FVP and 4 other brands. US MOTOR WORKS US8102 carries the "Popular" badge.

Economy: 7 parts, from US MOTOR WORKS, FVP and SKP. A representative part number is US MOTOR WORKS US8102.

The Standard Replacement section: 11 options from GATES, GM GENUINE, ACDELCO and 1 other brand. ACDELCO 2521009 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

9 Water Pump Gasket parts for the 2017 Cadillac CT6 come from 4 brands — GM GENUINE, ELRING, FEL-PRO and 1 other brand. The "Popular" part is GM GENUINE 2512072.

This group includes GM GENUINE 2512072, ELRING 048370 and ELRING 048320 and the remaining parts above.

This table covers the Water Pump Inlet tubes. Read more

GM GENUINE supplies both parts for the 2017 Cadillac CT6.

Part numbers include GM GENUINE 12706857 and GM GENUINE 23482941.

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 12652047.

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

GM GENUINE supplies the 3 Water Pump Seal / O-Ring parts for the 2017 Cadillac CT6.

Listed part numbers: GM GENUINE 12646951, GM GENUINE 12646952 and GM GENUINE 12649987.