Hummer H1 (USA / CAN)

Transfer case fluid capacity & service interval

Hummer H1 (USA / CAN) requires 3,3 liters of transfer case fluid. The service interval for fluid changes is 12000 miles. The data covers 2 configurations.

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

TypeSpecifications
H1 6.5TD (1996-2004)
  • Use: Normal
  • Capacity 3,3 liter
  • Change 12000 miles
H1 6.5D (1994-2004)
  • Use: Normal
  • Capacity 3,3 liter
  • Change 12000 miles

Additional Notes

  • The Hummer H1 transfer case holds 3.3 liters of fluid, a figure that reflects a service fill level rather than a full overhaul or dry fill capacity.
  • Both the naturally aspirated 6.5D and the turbocharged 6.5TD share an identical 3.3-liter transfer case capacity, meaning the addition of forced induction on the 6.5TD variant produced no difference in transfer case fluid volume.
  • The 6.5D configuration covers model years 1994-2004, while the turbocharged 6.5TD entered the specification range starting in 1996, giving the two engines overlapping but not identical year coverage.
  • A 12,000-mile change interval applies to both engine variants under normal use conditions, placing transfer case fluid changes on a relatively frequent cycle compared to many other drivetrain fluids.

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