Cat Converter Removal, O2 Simulator [Archive] - Hummer H2 Forum: H2 forums

Cat Converter Removal, O2 Simulator

08-03-2009, 09:30 AM
Has anyone had experience with removal of the Cat Converters?
If so, what simulator module would you recommend.
Also, what is the difference between the pre-cat and post-cat sensors.
Hoping that the secondary sensor is only related to the performance of the cat converter and engine-check light.

09-28-2009, 08:05 AM
If your talking about the catalytic converters I'm interested. I have had to replace both of mine and had a "BAD" experience. Took it to Chevy dealer. Got a "WRITTEN" quote for $750.00. Picked it up and it was $2400.00. I showed them him the quote he wrote (service manager) and he said it was only a quote. He said the labor was a lot more than expected.