GM Service Manual Online
For 1990-2009 cars only

Object Number: 231206  Size: SH

The three way catalytic converter is an emission control device designed to reduce un-burned exhaust gases.

The three way catalyst lowers the following levels:

    • Oxides of nitrogen (NO3)
    • Hydrocarbons (HC)
    • Carbon monoxide (CO)

This vehicles uses a dual catalytic converter system. The dual catalytic converter system is a warm-up three way catalytic converter.

The catalytic converter catalysts coatings contain the following:

    • Platinum
    • Rhodium