This technical bulletin provides a procedure to replace the catalytic converters due to cracks that may
Chevrolet technical service bulletin 17NA321 for 2014-2018 Chevrolet Impala and 2013-2018 Cadillac XTS.
- Bulletin number
- 17NA321
- Component
- Engine
- Summary
- This technical bulletin provides a procedure to replace the catalytic converters due to cracks that may cause a noise or exhaust smell within the cabin.
Owners of these vehicles have filed 144 complaints in the engine category.
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