A copy found on the internet.
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This letter is intended to make you aware that some 2001 model year Chevrolet Camaro vehicles, equipped with a 5.7L V8 engine, may have failure of the left or right catalytic converter.
This is not a recall. Do not take your vehicle to your Chevrolet dealer as a result of this letter unless you believe that your vehicle has the condition as described above.
What We Have Done: General Motors in providing owner with additional protection for the right and left catalytic converters. If this condition occurs on your 2001 Chevrolet Camaro within 10 years of the date your vehicle was originally placed in service or 120,000 miles (193,000 km), whichever occurs first, the condition will be repaired for you at no charge.
What You Should Do: Repairs and adjustments qualifying under this special coverage must be performed by a General Motors dealer. You may want to call the service department at your dealer to find out how long they will need to have your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are not already in stock. Keep this letter with your other important glove box literature for future reference.
The letter goes on to say about reimbursement and how you should mail them a claim form (that was included with the letter) with a receipt.
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I gather that this means that if you paid for new converters or need them to be replaced you will be reimbursed by GM.
Kev