Go outside, look under the vehicle, and count them.
It has one
2004 Chevy Blazer has two catalytic converters. One up close to the engine just after the pipes from the exhaust manifolds come together, and one down closer to the middle of the vehicle. The first one is sort of round, and the second is more flat and wide.
3
1
4
i just had my car in for a service, they told me catalytic converters were bad and there are 2 of them , so 2.
3
One
it has 4
Look under the vehicle and count them.
How many cataylic converters on a2001 geo tracker
One.