Chevrolet Tahoe, GMT K2UC (USA / CAN)

Transfer case fluid capacity & service interval

Chevrolet Tahoe, GMT K2UC (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
  • Tahoe 5.3 V8 AWD (2018-2020)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Tahoe 5.3 V8 AWD (2018-2020)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Tahoe 6.2 V8 AWD (2018-2020)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Tahoe 6.2 V8 AWD (2018-2020)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Tahoe 5.3 V8 (2017-2018)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Tahoe 5.3 V8 (2017-2018)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles
  • Tahoe 5.3 V8 (2015-2017)
  • (4x4)
  • Use: Normal
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 97500 miles
  • Tahoe 5.3 V8 (2015-2017)
  • (4x4)
  • Use: Severe
  • Capacity 1,5 liter
  • Check 7500 miles
  • Change 45000 miles

Additional Notes

  • The transfer case fluid capacity across all listed Chevrolet Tahoe GMT K2UC configurations is 1.5 liters. This figure represents a service fill volume, meaning the amount of fluid required when draining and refilling the transfer case during routine maintenance rather than a full overhaul with complete disassembly.
  • A fluid check interval of 7,500 miles applies to every configuration in the specifications, regardless of use condition or model year. This interval is consistent across both normal and severe duty designations.
  • Under normal use conditions, the transfer case fluid change interval is 97,500 miles. This extended interval reflects operation under typical driving conditions without the added stress of frequent towing, off-road use, or extreme temperatures.
  • Under severe use conditions, the change interval shortens to 45,000 miles — roughly 54% of the normal interval. Severe duty classifications generally account for operating environments that accelerate fluid degradation, such as sustained high loads, frequent stop-and-go driving, or exposure to extreme heat or cold.
  • The 5.3 V8 configurations span 2015-2018 across two overlapping year ranges in the specifications. The 2015-2017 and 2017-2018 entries share identical capacity and interval values, with 2017 appearing in both ranges.
  • From 2018 onward, the specifications list both a 5.3 V8 AWD and a 6.2 V8 AWD variant for the Tahoe GMT K2UC. Both engine configurations carry the same 1.5-liter transfer case capacity and identical check and change intervals under both normal and severe conditions, indicating no differentiation in transfer case service requirements between the two engine displacements in that period.

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