Pontiac GTO (USA / CAN)

Automatic transmission fluid capacity & service interval

Pontiac GTO (USA / CAN) automatic transmission fluid capacity is 5 liters. Service intervals occur every 50000 miles or 24 months. Data covers 1 configuration.

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

TypeSpecifications
GTO 6.0 V8 (2003-2006)
  • Use: Normal
  • Capacity 5 liter
  • Change 50000 miles/ 24 months
  • Code: 4/1

Additional Notes

  • The Pontiac GTO (USA / CAN) 6.0 V8 carries an automatic transaxle fluid capacity of 5 liters, which reflects a service fill volume rather than a full overhaul or dry fill quantity.
  • A transaxle combines the transmission and final drive into a single housing, and the 5-liter figure applies uniformly across the 2003-2006 model years with no variation by year within that range.
  • The specified change interval is 50,000 miles or 24 months, whichever comes first, and I note that both a distance and a time threshold are given, meaning the 24-month limit applies even when mileage accumulation is low.
  • The interval listed corresponds to normal use conditions, meaning the 50,000-mile or 24-month schedule is not a shortened severe-duty interval but rather the standard expectation for typical driving circumstances.

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