The MPG for a 1990 Chevy Silverado 2500 varied significantly depending on the engine, transmission, and drivetrain (2WD vs. 4WD). There's no single answer. You'll find a range of estimates, but expect
low teens to possibly mid-teens mpg in city driving and slightly better on the highway. Actual mileage would depend heavily on driving habits and vehicle condition.
To find a more precise estimate, you would need to know the specific engine size (e.g., 5.7L, 6.2L, etc.) and transmission type. You might find more specific information in a 1990 Silverado 2500 owner's manual or in online forums dedicated to classic Chevy trucks.
