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How to Replace Radiator Dual Fan Assembly 2003-07 Cadillac CTS
Created on:
Tools used
Socket Extensions
Flat Blade Screwdriver
Phillips Head Screwdriver
Phillips Bit in a Ratchet
10mm Socket
Ratchet
Pick
1. Removing the Air Box Runner
Twist off the oil fill cap
Pop off the plastic engine cover
Twist on the oil fill cap
Pull off the radiator support cover
Loosen the air intake hose clamp with a flat blade screwdriver
Disconnect the MAP sensor wiring harness
Disconnect the PCV breather hose from the intake tube
Loosen the air box screws
Unclip the air box cover
Remove the air filter if necessary
Lift the air box runner out of the vehicle
2. Installing the Fans
Disconnect the wiring harnesses from the fans
Pop the fan wiring out of the fan shroud
Hang the fan wiring aside
Remove the three 10mm bolts from the air box
Unclip the cooling line from the air box
Lift the air box up and out
Lift the air box insulation up and out
Remove the Phillips head screw from the fan shroud
Remove the three 10mm bolts from the top of the fan shroud
Disconnect the wiring harness retainer from the fan shroud
Pull the fans up and out from the driver's side
3. Installing the Fans
Insert the fans into place, lining up the locating tabs
Insert the three 10mm bolts into the top of the fan shroud
Connect the wiring harnesses to the fan
Insert the air box insulator
Put the air box into place
Clip the cooling line to the air box
Insert the three 10mm bolts into the air box
4. Installing the Air Box Runner
Place the air filter into the air box
Put the air box runner into place
Tighten the air box screws
Connect the MAP sensor wiring harness
Put the intake hose onto the throttle body
Tighten the intake hose clamp with a flat blade screwdriver
Put on the radiator support cover
Connect the PCV breather hose to the intake hose
Remove the oil cap
Snap the engine cover on
Reinstall the oil cap.
Brought to you by 1AAuto.com, your source for quality replacement parts and the best service on the Internet.
Hi, I'm Mike from 1A Auto. I hope this how-to video helps you out, and next time you need parts for your vehicle, think of 1AAuto.com. Thanks.
In this video, we're going to show you how to replace the cooling fans in a 2005 Cadillac CTS. This information is going to be the same from 2005 to 2007 in both 2.8 and 3.6 liter models. The items you'll need are a new radiator fan assembly from 1AAuto.com, a 10 millimeter socket, ratchet and extension, Phillips and flat-head screwdrivers, pliers, and side cutters, as well as a pick tool.
Remove the oil fill cap. Pop the engine cover off. Reinstall your oil fill cap to make sure that nothing falls in there while you're working.
Use a flat-blade screwdriver to loosen the clamp holding the intake tube to the intake manifold at the throttle body. Remove the electrical connector to the MAP sensor. Move the connector out of the way. Disconnect the PCV breather at the back of the intake tube. With a flat or a Phillips-head screwdriver, loosen the two screws at the top of the split in the air box. Pull back and release the air box from its clips. You may have to remove the air filter. Release this whole runner from the vehicle.
Push down and release the electrical connector from the fan. Pop the clip out that holds the harness onto the fan shroud. Hang that out of the way. Do the same thing on the other side. Using a 10 millimeter socket and ratchet, remove the three bolts holding the other half of the air box into the engine bay. Lift up, disconnect the hose from the other half of the air box, and remove it from the vehicle. Remove the rubber insulation from under the air box. Remove this Phillips head screw from the side of the fan shroud. You may be able to get in there with a stubby Phillips head screwdriver but we're going to use a Phillips bit and a small ratchet.
Remove these three 10 millimeter bolts from the top of the radiator fans. Disconnect the retainer on the side of the fan shroud that secures the harness. Lift up and pull toward the driver's side to release the fan shroud from the retainers at the bottom. Pull the fans out through the driver's side to remove them from the vehicle.
As you can see, our old part has the same three bolt mounting locations along the top and the same size fans with the same number of fins on both the old part and the new part. We have the same slotted mounting location at the bottom. They are the same dimensions, both height and width and come with a new motor on the back with the same connectors on each side. A lot of times, these fans can become seized up. The motors can short out or open and not function properly anymore. You can also have the little plastic fins break and come off balance, creating a noise or a vibration as well as a deficiency in cooling. If your old fans are broken or damaged in any way and creating a noise, vibration, or deficiency in cooling, then these new fans from 1AAuto are going to go in, direct fit, just like your original equipment and fix you up right.
Reinstall the radiator fans into the vehicle. Be sure to line the bottom slots up with the tabs on the radiator. Reinstall the three 10 millimeter bolts into the top of the radiator. Tighten those bolts up with a 10 millimeter socket and ratchet. Reinstall the electrical connectors to each fan. Reinstall the plastic insulator for the air box. Reinstall the air box. Remember to connect the cooling line to the top. Reinstall the three 10 millimeter bolts. Tighten them down with a 10 millimeter socket and ratchet.
Reinstall the air filter into the air box. Reinstall the rest of the air box and the intake tube. Using a flat blade screwdriver, tighten up the screws to connect the two halves of the air box. Reconnect the electrical connector for the MAP sensor. Reinstall the boot onto the throttle body. Tighten down the clamp. Reinstall the cover for the upper radiator support. Reinstall the PCV breather line. Remove the oil cap. Snap the engine cover back into place, reinstall the oil cap.
Thanks for tuning in. We hope this video helps you out. Brought to you by www.1AAuto.com, your source for quality replacement parts and the best service on the Internet. Please feel free to call us toll-free, 888-844-3393. We're the company that's here for you on the Internet and in person.
Part fixed my issue,arrived as promised . I had a mechanic install it for me. By getting part from 1A it saved me a lot of money, Will return in the future on my next parts when needed,
Fit and finish great!
M
October 14, 2019
I received my order three (3) days late but it came and was exactly as expected. The fit and finish were very good. The price was right. The online video of installation was on point. I am very satisfied with my purchase.
I was my own mechanic because of you ??
C
March 25, 2020
Thank you everyone at 1aauto.com for your patience with me when I was fussy about my radiator fans that me, a 54yr old woman installed due to your online videos. My problem was my 30amp fuse was blown. After I replaced them I had air conditioning and fans going strong. Your the best
Fernando
September 28, 2021
the customer service team assisted and answered all of my questions
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