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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7 Radiator fans found

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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
- 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 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
- Replaces: 84581336
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 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 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 Fan Assembly, Eng Clr
Part Number: 84847895
$241.57 MSRP: $507.50
You Save: $265.93 (53%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2020-2021 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 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 Assembly, Eng Clr
Part Number: 84448452
$237.13 MSRP: $498.16
You Save: $261.03 (53%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Fan Assembly, Fan Module
- Replaced by: 84947814
- 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 Blade, Fan
Part Number: 25952780
$42.47 MSRP: $80.14
You Save: $37.67 (48%)
Ships in 1-2 Business Days
ADD TO CART
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

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.