There are 2 owner-reported fuel system complaints for the 2018 Chevrolet Suburbanin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
THE CAP LESS FILLER'S AUTOMATIC FLAP BROKE. WE NOTICED THIS SHORTLY AFTER WE BOUGHT THE VEHICLE
THE FILLER NECK ON MY 3 MONTH OLD 2018 CHEVROLET SUBURBAN 1500, HAD TO BE REPLACED BECAUSE OF AN O RING THAT WAS MISSING, CAUSING THE FUEL TANK NOT TO PRESSURIZE PROPERLY CAUSING THE FUEL MANAGEMENT SYSTEM TO SEND AN OBD II FAULT.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026