Chevrolet Suburban, GMTK2YC (USA / CAN)

Differential fluid capacity & service interval

Chevrolet Suburban, GMTK2YC (USA / CAN) differential fluid capacity ranges from 1,5 to 2,6 liters. Service intervals include checks every 7500 miles. The data covers 5 configurations.

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

TypeSpecifications
  • Suburban 5.3 V8 (2018-2020)
  • Rear
  • Use: Normal
  • Capacity 2-2,6 liter
  • Check 7500 miles
  • Suburban 5.3 V8 AWD (2018-2020)
  • Front
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Code: (4x4)
  • Suburban 5.3 V8 AWD (2018-2020)
  • Rear
  • Use: Normal
  • Capacity 2-2,6 liter
  • Check 7500 miles
  • Suburban 6.2 V8 (2018-2020)
  • Rear
  • Use: Normal
  • Capacity 2-2,6 liter
  • Check 7500 miles
  • Suburban 6.2 V8 AWD (2018-2020)
  • Rear
  • Use: Normal
  • Capacity 2-2,6 liter
  • Check 7500 miles

Additional Notes

  • The Chevrolet Suburban GMTK2YC rear differential carries a capacity range of 2 to 2.6 liters across both the 5.3 V8 and 6.2 V8 configurations for 2018-2020. A stated range rather than a fixed value typically reflects variation between axle assemblies or fill methods used during service.
  • The 2 to 2.6 liter rear differential capacity applies equally to rear-wheel drive and AWD variants of both engine options, meaning the rear axle assembly specification is shared regardless of drivetrain configuration.
  • On AWD-equipped 5.3 V8 models for 2018-2020, the front differential holds 1.5 liters, a notably smaller volume than the rear. Front differentials in independent front suspension setups are generally more compact, which accounts for the reduced capacity relative to the rear axle.
  • All five configurations share a 7,500-mile check interval under normal use conditions. A check interval, as opposed to a change interval, indicates a scheduled inspection of fluid level and condition rather than a mandatory fluid replacement at that mileage.
  • The AWD variant of the 5.3 V8 carries specifications for both a front and a rear differential, while the rear-wheel drive 5.3 V8 lists only a rear differential. The front differential entry is exclusive to the AWD drivetrain, as expected given the absence of a front axle drive unit in the two-wheel drive configuration.
  • All listed specifications are designated for normal use conditions. No severe-use interval or capacity variation is listed for any of the 2018-2020 differential positions across either engine or drivetrain type.

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