NHTSA Complaint #11662059 — 2025 CHEVROLET SILVERADO 1500

FUEL/PROPULSION SYSTEM issue reported to NHTSA

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Complaint Details

ODI Number	11662059
Vehicle	2025 CHEVROLET SILVERADO 1500
Component	FUEL/PROPULSION SYSTEM
Date of Incident	April 21, 2025
Date Filed	May 20, 2025
Mileage	N/A miles
Crash	No
Fire	No
Injuries	0
Deaths	0
Vehicle Towed	No
State	MI

Consumer Description

Issues with DEF system. Fuel and DEF tank is filled up. Within 100 miles of towing the DEF system states DEF is empty and Speed will be limited within 500 miles. At the time the message appears on screen, fuel mileage goes from 13ish mpg to 8 mpg. Try to add DEF and only able to add close to a gallon of DEF. System has a hard time recalculating the amount of DEF in system.

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