Chevrolet Suburban, GMTK2YC (USA / CAN)

Transfer case fluid capacity & service interval

Chevrolet Suburban, GMTK2YC (USA / CAN) requires transfer case fluid with a capacity of 1,5 liters. Service intervals include checking at 7500 miles and changing at 45000 miles or 97500 miles. The data covers 8 configurations.

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

TypeSpecifications
  • Suburban 5.3 V8 AWD (2018-2020)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Suburban 5.3 V8 AWD (2018-2020)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Suburban 6.2 V8 AWD (2018-2020)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Suburban 6.2 V8 AWD (2018-2020)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Suburban 5.3 V8 AWD (2017-2018)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Suburban 5.3 V8 AWD (2017-2018)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Suburban 5.3 V8 AWD (2015-2017)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Suburban 5.3 V8 AWD (2015-2017)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles

Additional Notes

  • The Chevrolet Suburban GMTK2YC transfer case fluid capacity is 1.5 liters across all listed configurations, covering both the 5.3 V8 and 6.2 V8 AWD variants from 2015-2020. A consistent fill volume like 1.5 liters is characteristic of a service fill specification, meaning the amount required when draining and refilling during routine maintenance rather than a full overhaul quantity.
  • The fluid check interval is set at 7,500 miles for all configurations regardless of use condition, meaning both normal and severe duty applications share the same inspection frequency even though their change intervals differ substantially.
  • Under normal use conditions, the transfer case fluid change interval is 97,500 miles across all listed 5.3 V8 and 6.2 V8 AWD configurations. An interval of nearly 100,000 miles reflects a long-life fluid specification suited to standard on-road driving patterns.
  • Under severe use conditions, the change interval drops to 45,000 miles across all configurations. Severe duty classifications typically account for factors such as frequent towing, off-road operation, or extreme temperature exposure, all of which accelerate fluid degradation in a transfer case.
  • The difference between the normal and severe change intervals represents a reduction of 52,500 miles, meaning severe duty operation requires fluid replacement at less than half the mileage of normal duty service for the transfer case on all listed variants.
  • The 6.2 V8 AWD variant appears in the specifications only for the 2018-2020 period, while the 5.3 V8 AWD spans 2015-2020 across multiple overlapping configuration entries. Despite the difference in engine displacement, both share identical transfer case fluid capacity and service interval values.
  • The 5.3 V8 AWD specifications are recorded across three overlapping year groupings: 2015-2017, 2017-2018, and 2018-2020. Each grouping carries the same 1.5-liter capacity and the same check and change intervals, indicating no revision to transfer case fluid service requirements across those model year transitions.

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