One problem related to catalytic convertor has been reported for the 2000 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 GMC Sierra 1500 based on all problems reported for the 2000 Sierra 1500.
My catalytic converters failed once under warranty around 79000 miles and again around 110000. I paid for the second. I am having trouble again at 117000 miles and come to find out the problem is due to a leaking intake manifold gasket. This is allowing coolant to find its way into the exhaust destroying the quite expensive parts.
| Engine Noise problems | |
| Engine Exhaust System problems | |
| Engine Belts And Pulleys problems | |
| Cooling Fan problems | |
| Catalytic Convertor problems |