Check this link for an answer to your question: http://www.jlaforums.com/viewtopic.php?p=9188632 I had a similar experience but was not aware of GM reimbursement.
The "Haynes Repair Manual" says there is 2: 1 upstream of the Catalytic Converter, on the rear exhaust manifold. 1 downstream of the Catalytic Converter, on the Exhaust Pipe...
Under the vehicle connected to the exhaust pipe.
There is 1 before and 1 after the catalytic converter.
Probably just in front of, or on the front of the catalytic converter.
It has oxygen sensors before and after the catalytic converter.
between the engine and the muffler underneath the car would be the logical place.
If a catalytic converter is indeed bad, it's far more cost-effective to replace it rather than try to repair it
No, cause if you do, the car will blow up due to lack of air circulation...
There is 1 before the catalytic converter and 1 after it. The 1 before is called the upstream and the 1 after is the downstream.
2: 1 (Bank 1 Sensor 1) Upstream of the Catalytic Converter on the rear Exhaust Manifold & 1 (Bank 1 Sensor 2) Downstream of the Catalytic Converter on the Exhaust Pipe.....
The catalytic converter is found in the exhaust system between the engine and the muffler.
It did when it came from the factory.