My engine is overheating does this mean I need to replace my radiator?

GM Genuine Parts Engine Radiator

About this product

ACDelco GM Original Equipment Radiators are GM-recommended replacements for your vehicles original components. Radiators are heat exchangers, typically located in the front of the vehicle where air can flow through the fins and dissipate heat. Modern radiators are made from aluminum and plastic, while older vehicles used copper and brass. These radiators are designed to be corrosion resistant with optimal heat transfer characteristics. These original equipment radiators have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Lightweight; the radiators have a positive heat transfer to weight ratio
Corrosion-resistant aluminum designed core helps optimize the radiators long lasting
GM-recommended replacement part for your GM vehicle's original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

Inlet Header Width2.91 in / 74 mm

Engine Oil Cooler IncludedNo

Outlet Header Width2.8 in / 71 mm

Core Width26.01 in / 660.62 mm

Transmission Oil Cooler IncludedYes

Core MaterialAluminum

Core Thickness2.08 in / 52.76 mm

Outlet Header Length25.98 in / 660 mm

Outlet Diameter1.34 in / 34.15 mm

Core Height25.52 in / 648.16 mm

Inlet Diameter1.34 in / 34.15 mm

Inlet Header Length26.93 in / 684 mm

Internal Engine Oil CoolerNo

Mounting TypePin

Core Row Quantity1

Mounting Hardware IncludedNo

ClassificationOE

Down Flow Or Cross Flow TypeDown Flow

Outlet LocationBottom Left

Radiator Cap IncludedNo

Internal Transmission Oil CoolerNo

Tank MaterialPlastic

Frame IncludedYes

Inlet Header Width2.91 in / 74 mm

Outlet Header Width2.8 in / 71 mm

Transmission Oil Cooler IncludedYes

Core Thickness2.08 in / 52.76 mm

Outlet Diameter1.34 in / 34.15 mm

Inlet Diameter1.34 in / 34.15 mm

Internal Engine Oil CoolerNo

Core Row Quantity1

ClassificationOE

Outlet LocationBottom Left

Internal Transmission Oil CoolerNo

Frame IncludedYes

Engine Oil Cooler IncludedNo

Core Width26.01 in / 660.62 mm

Core MaterialAluminum

Outlet Header Length25.98 in / 660 mm

Core Height25.52 in / 648.16 mm

Inlet Header Length26.93 in / 684 mm

Mounting TypePin

Mounting Hardware IncludedNo

Down Flow Or Cross Flow TypeDown Flow

Radiator Cap IncludedNo

Tank MaterialPlastic

Limited Lifetime Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Maintain proper coolant levels and check levels regularly. Also make sure to check coolants concentration because the water ratio can affect the freezing or boiling point. (Note: Never attempt to remove a surge or radiator cap while the engine is hot. Serious injury could result.)

Replace coolant with a mixture of antifreeze and water according to the owner's manual recommendations.
Evaluate radiator and radiator cap for leaks, corrosion, or worn cap gasket. Make sure to pressure test the cap.
Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating.
Periodically, remove bugs, leaves, and other debris from the front of the radiator. They can block airflow and substantially reduce cooling efficiency.

Model	Body Style	Trim	Year(s)
Colorado	4 Door - Extended Cab Pickup	Base, WT, LT, Z71	2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

About this product

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Lightweight; the radiators have a positive heat transfer to weight ratio
Corrosion-resistant aluminum designed core helps optimize the radiators long lasting
GM-recommended replacement part for your GM vehicle's original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function

Inlet Header Width2.91 in / 74 mm

Engine Oil Cooler IncludedNo

Outlet Header Width2.8 in / 71 mm

Core Width26.01 in / 660.62 mm

Transmission Oil Cooler IncludedYes

Core MaterialAluminum

Core Thickness2.08 in / 52.76 mm

Outlet Header Length25.98 in / 660 mm

Outlet Diameter1.34 in / 34.15 mm

Core Height25.52 in / 648.16 mm

Inlet Diameter1.34 in / 34.15 mm

Inlet Header Length26.93 in / 684 mm

Internal Engine Oil CoolerNo

Mounting TypePin

Core Row Quantity1

Mounting Hardware IncludedNo

ClassificationOE

Down Flow Or Cross Flow TypeDown Flow

Outlet LocationBottom Left

Radiator Cap IncludedNo

Internal Transmission Oil CoolerNo

Tank MaterialPlastic

Frame IncludedYes

Inlet Header Width2.91 in / 74 mm

Outlet Header Width2.8 in / 71 mm

Transmission Oil Cooler IncludedYes

Core Thickness2.08 in / 52.76 mm

Outlet Diameter1.34 in / 34.15 mm

Inlet Diameter1.34 in / 34.15 mm

Internal Engine Oil CoolerNo

Core Row Quantity1

ClassificationOE

Outlet LocationBottom Left

Internal Transmission Oil CoolerNo

Frame IncludedYes

Engine Oil Cooler IncludedNo

Core Width26.01 in / 660.62 mm

Core MaterialAluminum

Outlet Header Length25.98 in / 660 mm

Core Height25.52 in / 648.16 mm

Inlet Header Length26.93 in / 684 mm

Mounting TypePin

Mounting Hardware IncludedNo

Down Flow Or Cross Flow TypeDown Flow

Radiator Cap IncludedNo

Tank MaterialPlastic

Limited Lifetime Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Maintain proper coolant levels and check levels regularly. Also make sure to check coolants concentration because the water ratio can affect the freezing or boiling point. (Note: Never attempt to remove a surge or radiator cap while the engine is hot. Serious injury could result.)

Replace coolant with a mixture of antifreeze and water according to the owner's manual recommendations.
Evaluate radiator and radiator cap for leaks, corrosion, or worn cap gasket. Make sure to pressure test the cap.
Have cooling system inspected immediately if instrument panel-mounted temperature gauge indicates engine overheating.
Periodically, remove bugs, leaves, and other debris from the front of the radiator. They can block airflow and substantially reduce cooling efficiency.

Model	Body Style	Trim	Year(s)
Colorado	4 Door - Extended Cab Pickup	Base, WT, LT, Z71	2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022

Frequently Asked Questions

No, an overheating engine could mean an issue with your radiator, but there are other pieces of the cooling system that could cause the engine to overheat. It is important to check for coolant leaks or a malfunctioning fan. If you look at the radiator and there is a lot of corrosion or holes there may be a problem with the radiator. Either way it is important to get the whole cooling system checked when your engine overheats.

About this product

Product details

Specifications

Warranty

Maintenance

Maintain proper coolant levels and check levels regularly. Also make sure to check coolants concentration because the water ratio can affect the freezing or boiling point. (Note: Never attempt to remove a surge or radiator cap while the engine is hot. Serious injury could result.)

Fits these vehicles

About this product

Product details

Specifications

Warranty

Maintenance

Maintain proper coolant levels and check levels regularly. Also make sure to check coolants concentration because the water ratio can affect the freezing or boiling point. (Note: Never attempt to remove a surge or radiator cap while the engine is hot. Serious injury could result.)

Fits these vehicles

Frequently Asked Questions