[tlatelpaj]

Anybody has step by step instructions on how to install a catalytic converter on a 2005 Cadillac CTS.

 

[ztollon]

Cut out the old one. Weld the new one in. Unless it come with flanges. Then you would disconnect the O2 sensor then unbolt the exhaust from the headers and the mid pipe. Then unscrew the O2 sensor. Reverse order for install. I didn't think you could get them flanged though.