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.
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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
Had to have replaced.
clogged catalytic converter. No codes, just no power.
Replaced catalytic converter. Head gasket blew shortly later. Replaced engine gaskets. Now the heater won't work. Still trying to figure that out.
Car hesitates...catalytic convertor broke and plugged needs to be replaced.