Did your 2007-2014 Cadillac CTS all of a sudden begin to overheat? Your issue may be as simple as replacing your radiator fan replacement. If your car reaches operating temperature and the fan doesn’t kick on, then it’s time to replace the fan motor. Follow along as we show you how to replace your radiator fan motor and get your CTS’ operating temperatures back under control. 

 

Parts for this DIY:

  • New Radiator Fan Motor
  • New Coolant Temperature Sensor (Optional)
  • Radiator Fluid (Optional)

 

Tools You’ll Need:

  • A Ratchet Set
  • A Screwdriver Set
  • A Wrench Set

 

Cadillac CTS: Radiator Fan How-To Guide:

CTS Radiator Fan ReplacementCTS Radiator Fan ReplacementCTS Radiator Fan Replacement
Step One:
If your CTS is overheating and the fan isn't turning on, then it's time to change the fan's motor.
Step Two:
First, you'll have to remove the top shroud protecting the radiator. You can remove the clips by popping them up.
Step Three:
With the shroud removed you now have access to the radiator and the cooling fan.
CTS Radiator Fan ReplacementCTS Radiator Fan ReplacementCTS Radiator Fan Replacement
Step Four:
With the radiator exposed you'll have to remove the air intake tube.
Step Five:
With the air intake tube removed you'll have enough space to access the fan assembly.
Step Six:
You'll also need to remove the lid of the air filter housing.
CTS Radiator Fan ReplacementCTS Radiator Fan ReplacementCTS Radiator Fan Replacement
Step Seven:
With the air filter lid removed it's always a good time to replace your air filter and remove any debris within the housing, such as leaves and accumulated dirt.
Step Eight:
Next you'll have to unplug the radiator fan, disconnect the auxiliary water pump (pop it off with a screwdriver), and pop off the transmission fluid line.
Step Nine:
With everything removed from the fan you can start unbolting it from the radiator. There are four bolts, some are easy to get to like the one pictured.
CTS Radiator Fan ReplacementCTS Radiator Fan ReplacementCTS Radiator Fan Replacement
Step Ten:
Some will be more difficult to get to as they are located behind the transmission and radiator hoses.
Step Eleven:
Once the shroud is unbolted it can be pulled up. You'll have to fight and wiggle quite a bit to clear all the lines, hoses and harnesses.
Step Twelve:
With the fan shroud removed it's a good idea to clean and hose down the radiator.
CTS Radiator Fan ReplacementCTS Radiator Fan ReplacementCTS Radiator Fan Replacement
Step Thirteen:
With the fan shroud removed make sure your new motor is the same.
Step Fourteen:
Before removing the fan you'll have to unplug the fan from the wiring harness.
Step Fifteen:
You'll also have to unbolt the fan, which is held in place with a single bolt.
CTS Radiator Fan Replacement
Step Sixteen:
Finally replace the motor by loosening the three Phillip head screws. From here just reverse your steps and reinstall everything carefully and you'll be cooling in no time.

 

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