Chevrolet Silverado (USA / CAN)

Automatic transmission fluid capacity & service interval

Chevrolet Silverado (USA / CAN) automatic transmission fluid capacity ranges from 10 to 14 liters. Service intervals include 45000 miles, 75000 miles/ 36 months/ 3000 hours, and 150000 miles/ 48 months/ 4000 hours. The data covers 24 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 2750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 2750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 2750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 1700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 1750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 2700 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 45000 miles
  • Code: Allison 2750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 150000 miles/ 48 months/ 4000 hours
  • Code: Allison 2750 6/1
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Vocational, severe
  • Capacity 14 liter (Overhaul capacity)
  • Capacity 10 liter (Service fill)
  • Change 75000 miles/ 36 months/ 3000 hours
  • Code: Allison 2750 6/1

Additional Notes

  • The Chevrolet Silverado HD 4500/5500/6500 with the 6.6 Duramax V8 carries an automatic transmission overhaul capacity of 14 liters, which represents the total fluid volume required when the transmission is fully disassembled and rebuilt, including the torque converter and all internal passages.
  • A service fill capacity of 10 liters applies to routine fluid changes on the same transmission, reflecting the volume that remains in the torque converter and valve body during a standard drain-and-fill procedure rather than a complete overhaul.
  • Under severe use conditions, the automatic transmission fluid change interval is set at 45,000 miles, a notably shorter interval that reflects the increased thermal and mechanical stress placed on the fluid during demanding operation.
  • Vocational use conditions carry a fluid change interval of 150,000 miles, 48 months, or 4,000 operating hours, whichever comes first, with the hour-based limit acknowledging that vocational vehicles often accumulate engine hours through stationary operation such as PTO work rather than road miles alone.
  • When vocational and severe conditions are combined, the change interval tightens to 75,000 miles, 36 months, or 3,000 hours, representing a midpoint between the two individual use-condition intervals and reflecting the compounded stress of both operating profiles.
  • The AWD variants of the Silverado HD 4500/5500/6500 6.6 Duramax V8 share identical automatic transmission fluid capacities and change intervals with the non-AWD configurations across all three use conditions, indicating no specification difference between the two drivetrain layouts for this system.

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