2016 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 are listed for the 2016 Cadillac CT6, from PRESTONE, PEAK, VALVOLINE and 3 other brands. FVP MV5050GAL carries the "Popular" badge.

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 the 6 Coolant Air Bleed Hose / Pipe parts for the 2016 Cadillac CT6.

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

This group shows a single part: GM GENUINE 20876185.

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

GM GENUINE supplies the 3 Coolant Hose / Pipe parts for the 2016 Cadillac CT6.

Part numbers include GM GENUINE 12627054, GM GENUINE 23436686 and GM GENUINE 12670936.

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 2016 Cadillac CT6 come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 36156, GM GENUINE 12627055 and GM GENUINE 12659280 and the remaining parts above.

This table covers the Coolant Hose Connector flanges. Read more

One part is listed for the 2016 Cadillac CT6 — FOUR SEASONS 86373.

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 237180.

This table covers the Coolant Pipe adapters. Read more

This group shows a single part: GM GENUINE 1534890.

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

2 Coolant Reservoir parts for the 2016 Cadillac CT6 come from GM GENUINE.

This group includes 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

This group shows a single part: 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

5 Coolant Reservoir Cap parts for the 2016 Cadillac CT6 come from 5 brands — DORMAN, ACDELCO, CALORSTAT and 2 other brands. The "Popular" part is DORMAN 54218.

Listed part numbers: DORMAN 54218, ACDELCO 12R05 and CALORSTAT RC0144, plus the other parts above.

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

3 Cooling System Tester Adapter parts are listed for the 2016 Cadillac CT6, from MOTORAD and GATES.

Listed part numbers: GATES 31391, MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 4 Hose Clamp parts for the 2016 Cadillac CT6.

Listed part numbers: GM GENUINE 90572594, GM GENUINE 90572587 and GM GENUINE 11611503, plus the other 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

This group shows a single part: GM GENUINE 12652017.

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

6 Radiator parts are listed for the 2016 Cadillac CT6, from KOYORAD, TYC, AGILITY and 3 other brands. KOYORAD A13623 carries the "Popular" badge.

Part numbers include KOYORAD A13623, TYC 13623 and AGILITY 8013623, among others listed above.

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 are listed for the 2016 Cadillac CT6, from 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

This group shows a single part: GM GENUINE 23444086.

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

2 Radiator Fan Assembly parts for the 2016 Cadillac CT6 come from 2 brands — TECHPRO and VEMO.

This group includes TECHPRO GM3115300 and VEMO V57010003.

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

2 Radiator Hose parts for the 2016 Cadillac CT6 come from 2 brands — ACDELCO and GM GENUINE.

This group includes ACDELCO 84207746 and GM GENUINE 84167084.

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

This group shows a single part: 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

6 Temperature Sender / Sensor parts are listed for the 2016 Cadillac CT6, from GPD, VEMO, GM GENUINE and 3 other brands. GM GENUINE 12650595 carries the "Popular" badge.

Economy: 2 parts, from GPD and VEMO. A representative part number is GPD 1712908.

The Standard Replacement section: 4 options from GM GENUINE, STANDARD MOTOR PRODUCTS, DELPHI and 1 other brand. GM GENUINE 12650595 is listed in this group.

Part numbers include GM GENUINE 12650595, GPD 1712908 and VEMO V51720323, among others listed above.

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

6 Thermostat parts for the 2016 Cadillac CT6 come from 6 brands — AUTOTECNICA, SKP, FOUR SEASONS and 3 other brands. The "Popular" part is FOUR SEASONS 86323.

The Economy section: 2 options from AUTOTECNICA and SKP. AUTOTECNICA GM0720800 is listed in this group.

Standard Replacement: 3 parts, from FOUR SEASONS, MOTORAD and MAHLE / CLEVITE. A representative part number is FOUR SEASONS 86323.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes FOUR SEASONS 86323, AUTOTECNICA GM0720800 and SKP SK1581889 and the remaining 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

8 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2016 Cadillac CT6, from GM GENUINE, FEL-PRO, MAHLE / CLEVITE and 1 other brand. GM GENUINE 1534732 carries the "Popular" badge.

Listed part numbers: GM GENUINE 1534732, GM GENUINE 12647181 and ELRING 048290, plus the other parts above.

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

4 Thermostat Housing / Water Outlet parts for the 2016 Cadillac CT6 come from 4 brands — ACDELCO, GATES, GM GENUINE and 1 other brand.

Part numbers include ACDELCO 1511109, GATES CO35087 and GM GENUINE 12741007, among others listed above.

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 are listed for the 2016 Cadillac CT6, from FEL-PRO, GM GENUINE and MAHLE / CLEVITE.

Listed part numbers: 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

5 Water Pump parts for the 2016 Cadillac CT6 come from 5 brands — FVP, US MOTOR WORKS, GM GENUINE and 2 other brands. The "Popular" part is GM GENUINE 12707180.

The Economy section: 2 options from FVP and US MOTOR WORKS. FVP US8148 is listed in this group.

Standard Replacement: 3 parts, from GM GENUINE, ACDELCO and GATES. A representative part number is GM GENUINE 12707180.

This group includes GM GENUINE 12707180 and FVP US8148 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

5 Water Pump Gasket parts are listed for the 2016 Cadillac CT6, from ELRING, GM GENUINE and FEL-PRO. GM GENUINE 2512072 carries the "Popular" badge.

Part numbers include GM GENUINE 2512072, ELRING 048370 and ELRING 048320, among others listed above.

This table covers the Water Pump Inlet tubes. Read more

This group shows a single part: GM GENUINE 12706857.

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 2016 Cadillac CT6 — 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

3 Water Pump Seal / O-Ring parts for the 2016 Cadillac CT6 come from GM GENUINE.

This group includes GM GENUINE 12646951, GM GENUINE 12646952 and GM GENUINE 12649987.