How do you change the catalytic converters on a 2005 cts, 3.6
Friday, July 15th, 2011 AT 3:36 PM
You drive it to the local exhaust shop and have them do it. You are not equipped for exhaust work as most shops aren't.
Friday, July 15th, 2011 AT 4:04 PM
Loosen the pipe from below. Remove the bolts that fasten the heat shields to the exhaust manifolds, position the shields aside as to access the upper 2 nuts and remove. The converters drop out of the bottom. If you need procedure and or illustrations, reply to this post.