Exhaust System Noise on Acceleration
The 2020 Chevrolet Silverado 1500 produces an unusual noise from the exhaust system during acceleration. This could indicate an exhaust leak, a failing catalytic converter, or a loose heat shield.
Diagnosis Details
Possible Causes
Exhaust leak at manifold gasket or pipe joint
Failing or clogged catalytic converter
Loose or damaged heat shield vibrating against exhaust components
Related OBD-II Codes
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What You Should Do
Inspect the exhaust system for visible cracks, rust holes, or loose connections.
Check the exhaust manifold gasket for leaks.
Listen for the noise while the vehicle is on a lift or safely supported.
If the noise is a rattle, check heat shields and catalytic converter internals.
A professional exhaust system inspection is recommended.
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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.
