Chevrolet Silverado (USA / CAN)

Coolant capacity & service interval

Chevrolet Silverado (USA / CAN) requires Coolant with a capacity of 28,3 liter. Service intervals occur at 150000 miles or 60 months. The data covers 2 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: Normal
  • Capacity 28,3 liter
  • Change 150000 miles/ 60 months
Silverado HD 4500/5500/6500 6.6 Duramax V8 AWD (2019- )
  • Use: Normal
  • Capacity 28,3 liter
  • Change 150000 miles/ 60 months

Additional Notes

  • The Chevrolet Silverado HD 4500/5500/6500 with the 6.6 Duramax V8 carries a cooling system capacity of 28.3 liters, a figure consistent with heavy-duty commercial truck cooling systems designed to manage the thermal load of a large diesel engine under sustained working conditions.
  • Both the standard and AWD variants of the 6.6 Duramax V8 share an identical 28.3-liter cooling system capacity, meaning drivetrain configuration does not alter the coolant volume required for either application.
  • The coolant change interval for both configurations is rated at 150,000 miles or 60 months under normal use conditions, placing the service cycle at a five-year or high-mileage threshold typical of extended-life coolant formulations used in modern diesel applications.
  • A 60-month interval tied to the 150,000-mile change specification means whichever limit is reached first would govern the service point, as is standard practice when both a mileage and a time-based threshold are listed together.

Other Systems