How to Replace Passenger side Catalytic Converter 2003-07 Cadillac CTS
Created on: 2016-08-15
How to replace a broken, leaking, clogged or corroded catalytic converter on the passenger side to the 06 Cadillac CTS
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step 1 :Removing the Catalytic Converter
- Raise and support the vehicle
- Remove the four 14mm bolts from the exhaust flanges
- Allow the exhaust to hang
- Loosen the O2 sensor with an O2 sensor socket and ratchet
- Twist off the O2 sensor by hand
- Remove the 10mm bolt from the heat shield
- Pull back the heat shield
- Remove the two 13mm bolts from the exhaust manifold
- Pull the catalytic converter down and out
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step 2 :Installing the Catalytic Converter
- Put the 13mm bolts into place on the exhaust manifold
- Lift the catalytic converter into place
- Start the 13mm nuts by hand
- Tighten the 13mm nuts and bolts
- Put the heat shield into place
- Insert the 10mm bolt for the heat shield
- Start the O2 sensor by hand
- Tighten the O2 sensor with an O2 sensor socket
- Lift the exhaust into place
- Insert the 14mm bolts into the exhaust flanges
- Tighten the 14mm bolts to 16 foot-pounds of torque
Tools needed
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13mm Socket
Socket Extensions
Torque Wrench
14mm Socket
O2 Sensor Socket
7mm Socket
22mm Wrench
10mm Socket
Ratchet
13mm Wrench
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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 working with our 2006 Cadillac CTS, 2.8-liter V6. We're going to be changing out our passenger side catalytic converter, or for this particular vehicle, the bank one catalytic converter. If you like this information, please click subscribe. We have a ton more information on this vehicle as well many other makes and models. If you want these parts for your car, they're available from 1AAuto.com. You can follow the link in the description. Here are the items you'll need for this repair.
We're going to use a lift to make this easier to show you guys at home, but you should be able to do this in the driveway with a jack and jack stands. Remove these four 14mm bolts from the exhaust with a 14mm socket and ratchet. Separate the exhaust and allow it to hang. Install an O2 sensor socket or a 22mm wrench over the O2 sensor. Crack it loose, and then you should be able to remove it the rest of the way by hand. Be sure that the connector and the sensor wires aren't hung up on anything that's going to cause them to twist or potentially break while we remove the sensor.
We're going to remove this 10mm bolt on the passenger upper heat shield for the exhaust manifold, and see if we can pry it back to access those two bolts. We'll use a 10mm socket and ratchet. Using a 13mm stubby wrench to support the bolt and 13mm socket and ratchet, undo the two bolts holding the cat to the exhaust manifold. Once it's free, we'll remove our cat from the vehicle.
Install the bolts. Then we'll put the cat and gasket up into place. Start the nuts by hand. Using your 13mm stubby wrench on the back bolt and 13mm socket, ratchet and extension, tighten down the bolts on your cat converter. Start the heat shield bolt by hand. Finish tightening it down with a 10mm socket and ratchet. Reinstall your O2 sensor. Finish installing with an O2 sensor socket and ratchet or a 22mm wrench. We'll line up our pipes and reinstall our four 14mm bolts. Tighten up all your bolts. Make sure that they seat onto the exhaust gaskets evenly. Torque these bolts to 16 foot pounds.
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