Chevrolet Tahoe, GMT K2UC (USA / CAN)

Automatic transmission fluid capacity & service interval

Chevrolet Tahoe, GMT K2UC (USA / CAN) automatic transmission fluid capacity ranges from 7,7 to 11,9 liters. Service intervals include checking at 7500 miles and changing at 45000 miles. The data covers 10 configurations.

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

TypeSpecifications
Tahoe 5.3 V8 (2018-2020)
  • Use: Normal
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 (2018-2020)
  • Use: Severe
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Change 45000 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 AWD (2018-2020)
  • Use: Normal
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 AWD (2018-2020)
  • Use: Severe
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Change 45000 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 6.2 V8 (2018-2020)
  • Use: Severe
  • Capacity 11-11,5 liter (Overhaul capacity)
  • Capacity 7,7 liter (Service fill)
  • Change 45000 miles
  • Code: 10L80 MF6 10/1
Tahoe 6.2 V8 AWD (2018-2020)
  • Use: Severe
  • Capacity 11-11,5 liter (Overhaul capacity)
  • Capacity 7,7 liter (Service fill)
  • Change 45000 miles
  • Code: 10L80 MF6 10/1
Tahoe 5.3 V8 (2017-2018)
  • Use: Normal
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 (2017-2018)
  • Use: Severe
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Change 45000 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 (2015-2017)
  • Use: Normal
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Code: 6L80 (MYC) 6/1
Tahoe 5.3 V8 (2015-2017)
  • Use: Severe
  • Capacity 9,7-11,9 liter (Dry fill)
  • Check 7500 miles
  • Change 45000 miles
  • Code: 6L80 (MYC) 6/1

Additional Notes

  • The Chevrolet Tahoe GMT K2UC 5.3 V8 carries a dry fill capacity of 9.7–11.9 liters across all configurations from 2015-2020. A dry fill figure represents the total fluid volume required when filling a completely drained or newly assembled transmission, including the torque converter and all internal passages.
  • The 6.2 V8 configurations from 2018-2020 list two distinct capacity values: an overhaul capacity of 11–11.5 liters and a service fill of 7.7 liters. The service fill figure applies when fluid is drained and refilled during routine maintenance, where residual fluid remains in the torque converter and cooler lines, while the overhaul capacity covers a full disassembly scenario.
  • Under severe use conditions, the 5.3 V8 in all covered year ranges carries a fluid change interval of 45,000 miles. Severe use typically encompasses operating conditions such as frequent towing, trailer hauling, extended idling, or driving in extreme temperatures, all of which accelerate fluid degradation.
  • Under normal use conditions, the 5.3 V8 specifications list only a fluid check interval of 7,500 miles, with no change interval stated. The severe use rows for the same engine add the 45,000-mile change interval on top of the same 7,500-mile check interval.
  • The 6.2 V8 rows, covering both rear-wheel-drive and AWD variants from 2018-2020, list only a severe use condition with a 45,000-mile change interval. No check interval mileage figure appears in the 6.2 V8 specifications.
  • The AWD variant of the 5.3 V8 from 2018-2020 shares identical transmission fluid capacity and service interval figures with the non-AWD 5.3 V8 of the same years, both listing 9.7–11.9 liters dry fill, a 7,500-mile check interval, and a 45,000-mile change interval under severe use.
  • The 5.3 V8 specifications span three overlapping year groupings: 2015-2017, 2017-2018, and 2018-2020. Despite the different groupings, the capacity and interval values remain consistent across all three ranges, with the same 9.7–11.9 liter dry fill and the same mileage intervals appearing in each.

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