The catalytic converter may become plugged resulting in loss of engine power. General Motors has extended the catalytic convertor warranty on some models to 10 years or 120,000 miles. Please contact your local GM dealer to see if your vehicle is included.Google+
Car Problem Reports
Chevrolet Monte Carlo Plugged Catalytic Converter May Cause Loss of Engine Power
Chevrolet Monte Carlo Problem
Average Mileage: 114,579 mi (75,000 mi - 170,000 mi)
Visitor, 2001 Chevrolet Monte Carlo, 150,000 mi
my 01 monte carlo ss will idle fine but when i go to take it down the road when i get up to about 25 or 30 mph it starts jerkin bad and starts boggin down and i just cant figure out a solution
Visitor, 2002 Chevrolet Monte Carlo, 80,000 mi
Replaced catalytic converter. Head gasket blew shortly later. Replaced engine gaskets. Now the heater won't work. Still trying to figure that out.
Had to have replaced.