NHTSA Complaint #11494861 — 2021 GMC SIERRA 1500

FUEL/PROPULSION SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11494861
Vehicle	2021 GMC SIERRA 1500
Component	FUEL/PROPULSION SYSTEM
Date of Incident	November 10, 2022
Date Filed	November 25, 2022
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	AZ

Consumer Description

Within 100 miles after purchasing this truck from GMC (used with 74K miles)I got messages both on my phone and later through inspection at GMC service center that the DEF system had a problem. The check engine light came on then off as well.I was getting messages saying I only had so many miles before the DEF system needed more fluid even though the tank was full or near full. The dealer here in Tucson indicated there was a bulletin on this problem and ordered parts for the repair. I was informed it was not a recall and I would have to pay over $800.00 for this repair. To date the dealer has had my truck for 2 weeks. Additionally, another message said insufficient coolant flow so they are installing a new coolant pump to be paid for by an after market warranty which I purchased at the time I bought the truck. This repair is over $1000.00

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