Suspension or Exhaust Issue Over Bumps
A noise from under the car when going over bumps often indicates a worn suspension component (like sway bar links, bushings, or shock mounts) or a loose exhaust system. The 2020 Silverado is known for sway bar link failures and exhaust hanger corrosion.
Diagnosis Details
Possible Causes
Worn or broken sway bar end links
Loose or damaged exhaust heat shield or hanger
Worn control arm bushings or ball joints
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What You Should Do
Inspect the sway bar links for play or damage, check exhaust system for loose components, and examine suspension bushings and ball joints.
A road test with a helper can help pinpoint the noise source.
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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.