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Rotten egg smell, was told its the catalytic converter but…

Rotten egg smell, was...

Rotten egg smell, was told its the catalytic converter but not sure.. while doing a steady 30mph+ truck seems to skip and sounds like its dogging out

Mechanic's Assistant: Has the vehicle been "scoped out"?

Firestone checked my tire pressure today and they noticed it, they said it was the cats

Mechanic's Assistant: What is the model/year of your Chevy?

2008 chevy silverado 5.3

Mechanic's Assistant: Are you fixing your Silverado yourself? What have you tried so far?

Not myself, trying to run the gas down to try the catalytic converter cleaner in the gas tank

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Thats it

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Answered in 2 hours by:
3/10/2018
Pete
Pete, Mechanic
Category: Chevy
Satisfied Customers: 139
Experience: Ase Master Tech
Verified

Is the check engine light flashing? The reason you get the rotten egg smell is because the engine is misfiring. The cat will get damaged, but it is not the real problem. How many miles on the engine? It probably has a bad coil or spark plug.

Pete
Pete, Mechanic
Category: Chevy
Satisfied Customers: 139
Experience: Ase Master Tech
Verified
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