How to diagnose and replace a malfunctioning cooling fan system?

If the radiator fan is not coming on and the engine is overheating, start by checking the fuses for the fan. If the fuses are fine, disconnect the electrical connector for the fan motor and apply battery voltage to the terminals. If the fan motor does not come on, it needs to be replaced. Next, check the fan relays located in the engine compartment fuse/relay box. Test the relays to ensure they are functioning properly. If the fuses, motor, and relays are all functional, inspect the wiring and connections to the fan motor. If no obvious issues are found, it is recommended to have the radiator fan system diagnosed. For the replacement process, remove the front bumper cover and drain the engine coolant. Disconnect the fan electrical connector and any attached wiring harnesses. Remove the front bumper impact absorber and additional shrouding from the air conditioning condenser. Remove the condenser/radiator/fan assembly upper mounting brackets and disconnect the radiator hoses and transaxle cooler lines. Unbolt the fan assembly from the radiator and remove it. Detach the fan blade from the motor and remove the fan motor from the shroud by removing the mounting screws. To install, reverse the removal process and fill the cooling system with the proper mixture of antifreeze and water. Check for leaks after the vehicle reaches normal operating temperature and add more transaxle fluid as needed.

Genuine GMC Terrain Radiator fan

Radiator Cooling Fan

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9 Radiator fans found

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GMC Terrain Fan Assembly, Eng Clr
Part Number: 84847896
$156.32 MSRP: $328.40
You Save: $172.08 (53%)
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Product Specifications
- Other Name: Fan Assembly, Fan Module
- Replaced by: 85109720
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 1.5L
- 2020 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 2.0L
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GMC Terrain Fan Assembly, Eng Clr
Part Number: 84947813
$181.08 MSRP: $380.42
You Save: $199.34 (53%)
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Product Specifications
- Other Name: Fan Assembly, Fan Module
- Replaces: 23497174, 84312115, 84448451, 84221606
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 1.5L, 4 Cyl 2.0L
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GMC Terrain FAN ASM-ENG CLR
Part Number: 85109720
$156.32 MSRP: $328.40
You Save: $172.08 (53%)
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Product Specifications
- Replaces: 84581336, 84847896
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023-2024 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 1.5L
- 2020 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 2.0L
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GMC Terrain Fan Assembly, Eng Clr
Part Number: 84947814
$237.13 MSRP: $498.16
You Save: $261.03 (53%)
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Product Specifications
- Other Name: Fan Assembly, Fan Module
- Replaces: 84273038, 84448452, 84142650
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 1.5L, 4 Cyl 1.6L Diesel, 4 Cyl 2.0L
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GMC Terrain Fan Assembly, Eng Clr
Part Number: 84847895
$241.57 MSRP: $507.50
You Save: $265.93 (53%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Fan Assembly, Fan Module
- Replaces: 84581335
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2022 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLE2 , 4 DOOR SLT1, 4 DOOR SLT1 , 4 DOOR SLT2, 4 DOOR SLT2 | 4 Cyl 1.5L, 4 Cyl 2.0L
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GMC Terrain Blade Assembly, Fan
Part Number: 84117014
$52.93 MSRP: $161.56
You Save: $108.63 (68%)
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Product Specifications
- Other Name: Fan Blade
- Replaces: 25952782
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Terrain Blade, Fan
Part Number: 25952780
$42.47 MSRP: $80.14
You Save: $37.67 (48%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: BLADE, Engine Cooling; Fan Blade
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | SLE2 SUV, SLT SUV | 6 Cyl 3.0L, 6 Cyl 3.6L
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GMC Terrain Blade, Fan
Part Number: 25952781
$98.17 MSRP: $185.22
You Save: $87.05 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: BLADE, Engine Cooling; Fan Blade
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2017 GMC Terrain | SLE2 SUV, SLT SUV | 6 Cyl 3.0L, 6 Cyl 3.6L
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GMC Terrain FAN ASM-ENG CLR
Part Number: 84826625
$265.12 MSRP: $477.70
You Save: $212.58 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2022 GMC Terrain | 4 DOOR SLE2 , 4 DOOR SLT1 , 4 DOOR SLT2 | 4 Cyl 2.0L

GMC Terrain Radiator fan

The purpose of the Radiator Fan in GMC Terrain cars is to aid in cooling down the engine when there is a little or no moving air over the radiators. It works on the principle of sucking air through the radiator in a bid to cool the hot coolant before it goes back into the engine. The GMC Terrain models are fitted with both mechanical and electrical Radiators together with electrical Hoses and connectors as used in many contemporary car models, where the Radiator Fans are electrically operated through a 12V motor. Mechanical fans are usually clutched on the water pump shaft and hence self-levelling, while their high speeds are muffled by a thermal clutch and are fuel conservationist. Electric fans on the other hand are controlled by Powertrain Control Module (PCM) depending on coolant temperatures and demand on air conditioner. Both fan types are housed in a shroud to force air through the radiator; this underlines the significance of the Radiator Fan in the appropriate operation of GMC Terrain vehicles' engines.

Each OEM GMC Terrain Radiator fan we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

GMC Terrain Radiator fan Parts Questions & Experts Answers

Blade, Fan
25952781
Q: How to diagnose and replace a malfunctioning cooling fan system?
A: If the Radiator fan is not coming on and the engine is overheating, start by checking the fuses for the fan. If the fuses are fine, disconnect the electrical connector for the fan motor and apply battery voltage to the terminals. If the fan motor does not come on, it needs to be replaced. Next, check the fan relays located in the engine compartment fuse/relay box. Test the relays to ensure they are functioning properly. If the fuses, motor, and relays are all functional, inspect the wiring and connections to the fan motor. If no obvious issues are found, it is recommended to have the radiator fan system diagnosed. For the replacement process, remove the front bumper cover and drain the engine coolant. Disconnect the fan electrical connector and any attached wiring harnesses. Remove the front bumper impact absorber and additional shrouding from the air conditioning condenser. Remove the condenser/radiator/fan assembly upper mounting brackets and disconnect the radiator hoses and transaxle cooler lines. Unbolt the fan assembly from the radiator and remove it. Detach the fan blade from the motor and remove the fan motor from the shroud by removing the mounting screws. To install, reverse the removal process and fill the cooling system with the proper mixture of antifreeze and water. Check for leaks after the vehicle reaches normal operating temperature and add more transaxle fluid as needed.