2020 Cadillac CT5 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 2020 Cadillac CT5, 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

4 Coolant Air Bleed Hose / Pipe parts are listed for the 2020 Cadillac CT5, from ACDELCO and GM GENUINE.

This group includes ACDELCO 55503533, ACDELCO 55508978 and GM GENUINE 55494528 and the remaining parts above.

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

5 Coolant Hose / Pipe parts are listed for the 2020 Cadillac CT5, from GM GENUINE and ACDELCO. ACDELCO 55515456 carries the "Popular" badge.

Listed part numbers: ACDELCO 55515456, GM GENUINE 55487348 and GM GENUINE 55508595, 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

This group shows a single part: GM GENUINE 12659280.

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

GM GENUINE supplies the 4 Coolant Hose Retainer / Clip parts for the 2020 Cadillac CT5.

Listed part numbers: GM GENUINE 11548857, GM GENUINE 11547354 and GM GENUINE 88996648, plus the other parts above.

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

This group shows a single part: GM GENUINE 23378398.

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 84805610.

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 2020 Cadillac CT5 come from 4 brands — AUTOTECNICA, CALORSTAT, GATES and 1 other brand.

This group includes AUTOTECNICA GM0714619, CALORSTAT RC0144 and GATES 31569 and the remaining parts above.

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

One part is listed for the 2020 Cadillac CT5 — GM GENUINE 13596789.

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

MOTORAD supplies both parts for the 2020 Cadillac CT5.

Listed part numbers: MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

GM GENUINE supplies the 8 Hose Clamp parts for the 2020 Cadillac CT5. GM GENUINE 11570871 carries the "Popular" badge.

Listed part numbers: GM GENUINE 11570871, GM GENUINE 90530642 and GM GENUINE 11548826, plus the other parts above.

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

One part is listed for the 2020 Cadillac CT5 — GM GENUINE 84750051.

This table covers the Intercooler Air Hose pipes. Read more

One part is listed for the 2020 Cadillac CT5 — GM GENUINE 84009657.

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 Intercooler Hose / Pipe clamps. Read more

This group shows a single part: GM GENUINE 13438980.

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

5 Radiator parts are listed for the 2020 Cadillac CT5, from GPD, TECHPRO, GM GENUINE and 2 other brands. GM GENUINE 84511252 carries the "Popular" badge.

Economy: 2 parts, from GPD and TECHPRO. A representative part number is GPD 13889C.

The Standard Replacement section: 3 options from GM GENUINE, FVP and UAC. GM GENUINE 84511252 is listed in this group.

Listed part numbers: GM GENUINE 84511252, GPD 13889C and TECHPRO GM3010631, plus the other parts 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

2 Radiator Cap parts are listed for the 2020 Cadillac CT5, from ACDELCO and PROFESSIONAL PARTS SWEDEN.

Listed part numbers: ACDELCO RC124 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 22790134.

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

3 Radiator Fan Assembly parts for the 2020 Cadillac CT5 come from 3 brands — TECHPRO, GM GENUINE and VDO / CONTINENTAL.

The Economy section: 1 option from TECHPRO. TECHPRO GM3115355 is listed in this group.

Standard Replacement: 2 parts, from GM GENUINE and VDO / CONTINENTAL. A representative part number is GM GENUINE 85080140.

This group includes TECHPRO GM3115355, GM GENUINE 85080140 and VDO / CONTINENTAL FA74049.

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

This group shows a single part: ACDELCO 84805594.

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

13 Temperature Sender / Sensor parts are listed for the 2020 Cadillac CT5, from GM GENUINE, WALKER PRODUCTS, HOLSTEIN and 4 other brands. GM GENUINE 55488246 carries the "Popular" badge.

Economy: 3 parts, from HOLSTEIN and GPD. A representative part number is GPD 1814558.

The Standard Replacement section: 10 options from GM GENUINE, WALKER PRODUCTS, STANDARD MOTOR PRODUCTS and 2 other brands. GM GENUINE 55488246 is listed in this group.

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

One part is listed for the 2020 Cadillac CT5 — DORMAN 66264.

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

This group shows a single part: MOTORAD 1335000.

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

One part is listed for the 2020 Cadillac CT5 — FEL-PRO 36164.

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

GM GENUINE supplies both parts for the 2020 Cadillac CT5.

Part numbers include GM GENUINE 55504553 and GM GENUINE 12647400.

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

This group shows a single part: GM GENUINE 12738954.