NHTSA Complaint #11685179 — 2021 CHEVROLET SUBURBAN

FUEL/PROPULSION SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11685179
Vehicle	2021 CHEVROLET SUBURBAN
Component	FUEL/PROPULSION SYSTEM
Date of Incident	September 1, 2025
Date Filed	September 4, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	KS

Consumer Description

Engine light comes on and now flashes. The service traction control and esc comes on. The whole vehicle shakes when idling. Certified GM dealer hooked it up and it says misfiring cylinder 6. All spark plugs replaced, new GM coil, new spark plug wires. Nothing has fixed it yet.

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