2021 Chevrolet Colorado 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

17 Coolant / Antifreeze parts for the 2021 Chevrolet Colorado come from 6 brands — PRESTONE, PEAK, VALVOLINE and 3 other brands. The "Popular" part is FVP MV5050GAL. 13 parts fit every engine; the other 4 are engine-specific.

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 Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

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 2021 Chevrolet Colorado come from GM GENUINE.

Part numbers include GM GENUINE 12683454, GM GENUINE 12653191 and GM GENUINE 12717142.

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

12 Coolant Hose / Pipe parts for the 2021 Chevrolet Colorado come from 3 brands — GM GENUINE, DORMAN and GATES. The "Popular" part is GM GENUINE 12627054. 1 part fits every engine; the other 11 are engine-specific.

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

3 Coolant Hose / Pipe Seal parts are listed for the 2021 Chevrolet Colorado, from GM GENUINE and FEL-PRO. 1 part fits every engine; the other 2 are engine-specific.

This group includes FEL-PRO 36156, GM GENUINE 12627055 and GM GENUINE 13364695.

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 2021 Chevrolet Colorado — ELRING 599130.

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

2 Coolant Hose Retainer / Clip parts for the 2021 Chevrolet Colorado come from GM GENUINE.

This group includes GM GENUINE 19130464 and GM GENUINE 11547354.

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

5 Coolant Reservoir parts are listed for the 2021 Chevrolet Colorado, from TECHPRO, GM GENUINE, DORMAN and 1 other brand. GM GENUINE 84388367 carries the "Popular" badge. All of them fit every engine offered in the 2021 Colorado.

This group includes GM GENUINE 84388367, DORMAN 603869 and SKP SK84388367 and the remaining 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

6 Coolant Reservoir Cap parts are listed for the 2021 Chevrolet Colorado, from DORMAN, SKP, AUTOTECNICA and 3 other brands. DORMAN 54218 carries the "Popular" badge. All of them fit every engine offered in the 2021 Colorado.

This group includes DORMAN 54218, SKP SK54218 and AUTOTECNICA GM0714619 and the remaining parts above.

This table covers the Coolant Reservoir clamps. Read more

2 Coolant Reservoir Clamp parts for the 2021 Chevrolet Colorado come from GM GENUINE.

Listed part numbers: GM GENUINE 90572594 and GM GENUINE 11611503.

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

2 Cooling System Tester Adapter parts for the 2021 Chevrolet Colorado come from MOTORAD.

This group includes MOTORAD 3128 and MOTORAD 3127.

This table covers the Hose clamps. Read more

9 Hose Clamp parts for the 2021 Chevrolet Colorado come from GM GENUINE. The "Popular" part is GM GENUINE 90530642. 1 part fits every engine; the other 8 are engine-specific.

Part numbers include GM GENUINE 90530642, GM GENUINE 90572595 and GM GENUINE 13162322, among others listed above.

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

5 Intercooler parts for the 2021 Chevrolet Colorado come from 5 brands — TECHPRO, GM GENUINE, TYC and 2 other brands. The "Popular" part is TYC 18104.

The Economy section: 1 option from TECHPRO. TECHPRO GM3012118 is listed in this group.

Standard Replacement: 1 part, from GM GENUINE. A representative part number is GM GENUINE 84273778.

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

Part numbers include TYC 18104, TECHPRO GM3012118 and GM GENUINE 84273778, among others listed above.

This table covers the Intercooler Air Hose pipes. Read more

3 Intercooler Air Hose / Pipe parts for the 2021 Chevrolet Colorado come from GM GENUINE.

Listed part numbers: GM GENUINE 84784919, GM GENUINE 84495341 and GM GENUINE 84784913.

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

21 Radiator parts for the 2021 Chevrolet Colorado come from 11 brands — CSF, TYC, GM GENUINE and 8 other brands. The "Popular" part is CSF 3906.

The Economy section: 2 options from GPD and TECHPRO. GPD 13762C is listed in this group.

Standard Replacement: 4 parts, from CSF, TYC, GM GENUINE and 1 other brand. A representative part number is CSF 3906.

15 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 2021 Chevrolet Colorado come from 2 brands — ACDELCO and PROFESSIONAL PARTS SWEDEN. Every part fits all 3 engine options (2.5L L4, 2.8L L4 DIESEL Turbocharged and 3.6L V6).

Listed part numbers: ACDELCO RC124 and PROFESSIONAL PARTS SWEDEN 21342353.

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

2 Radiator Drain Petcock parts are listed for the 2021 Chevrolet Colorado, from ACDELCO and DORMAN. All of them fit every engine offered in the 2021 Colorado.

Part numbers include ACDELCO 22985584 and DORMAN 61134.

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

5 Radiator Fan Assembly parts are listed for the 2021 Chevrolet Colorado, from DORMAN, GPD, VARIOUS MFR and 2 other brands. DORMAN 621986 carries the "Popular" badge.

Economy: 3 parts, from DORMAN, GPD and VARIOUS MFR. A representative part number is DORMAN 621986.

The Standard Replacement section: 2 options from AGILITY and TYC. AGILITY 6010383 is listed in this group.

This group includes DORMAN 621986, GPD 2812041 and VARIOUS MFR GM3115304 and the remaining parts above.

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 the 3 Radiator Fan Blade parts for the 2021 Chevrolet Colorado.

This group includes GM GENUINE 84530771, GM GENUINE 1581842 and GM GENUINE 84530770.

This table covers the Radiator Fan clutches. Typical signs include slip at highway speed, chatter on takeoff, or a pedal that stays low. Resurface or replace the flywheel with the clutch — a heat-checked flywheel wastes the new disc. Read more

8 Radiator Fan Clutch parts for the 2021 Chevrolet Colorado come from 7 brands — FVP, GPD, HAYDEN and 4 other brands. The "Popular" part is GPD 2911429.

Part numbers include GPD 2911429, HAYDEN 3210 and FVP 22351, among others listed above.

This table covers the shrouds that duct air through the fan and radiator. Read more

This group shows a single part: GM GENUINE 84243708.

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

16 Radiator Hose parts are listed for the 2021 Chevrolet Colorado, from ACDELCO, CONTINENTAL, GATES and 1 other brand. ACDELCO 12659311 carries the "Popular" badge.

This table covers the brackets that mount the Radiator Hose. 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

One part is listed for the 2021 Chevrolet Colorado — GM GENUINE 23232307.

This table covers the Radiator insulators. Read more

One part is listed for the 2021 Chevrolet Colorado — GM GENUINE 22947568.

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

24 Temperature Sender / Sensor parts for the 2021 Chevrolet Colorado come from 12 brands — GM GENUINE, WALKER PRODUCTS, GPD and 9 other brands. The "Popular" part is GM GENUINE 12641073.

The Economy section: 8 options from GPD, HOLSTEIN, UNITED MOTOR PRODUCTS and 1 other brand. GPD 1712640 is listed in this group.

Standard Replacement: 16 parts, from GM GENUINE, WALKER PRODUCTS, STANDARD MOTOR PRODUCTS and 5 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

17 Thermostat parts are listed for the 2021 Chevrolet Colorado, from SKP, MOTORAD, FOUR SEASONS and 5 other brands. GATES 34846 carries the "Popular" badge.

Economy: 7 parts, from SKP, AUTOTECNICA and DORMAN. A representative part number is AUTOTECNICA GM0720263.

The Standard Replacement section: 9 options from MOTORAD, FOUR SEASONS, GATES and 2 other brands. GATES 34846 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

15 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 Chevrolet Colorado come from 5 brands — GM GENUINE, MAHLE / CLEVITE, FEL-PRO and 2 other brands. The "Popular" part is GM GENUINE 1534732. 2 parts fit every engine; the other 13 are engine-specific.

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

11 Thermostat Housing / Water Outlet parts are listed for the 2021 Chevrolet Colorado, from GM GENUINE, GATES, 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: 5 options from GM GENUINE, FOUR SEASONS, GATES and 1 other brand. GM GENUINE 1511084 is listed in this group.

4 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

4 Water Inlet Gasket parts for the 2021 Chevrolet Colorado come from 3 brands — GM GENUINE, FEL-PRO and MAHLE / CLEVITE. 2 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: FEL-PRO 36167, GM GENUINE 12647400 and GM GENUINE 12650512, plus the other parts above.