2009 Hummer H3 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Approximate Fluid Capacities

The following approximate capacities are given in US English and metric conversions. See Fluid and Lubricant Recommendations (USA and Canada)Β  for more information. All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual. Recheck fluid level after filling.

Application Specification
Metric US English
Cooling System
  • 3.7L Engine
9.5 liters 10.0 quarts
  • 5.3L Engine
13.5 liters 14.3 quarts
Differential Fluid
  • Front Axle
1.45 liters 1.53 quarts
  • Rear Axle
2.0 liters 2.11 quarts
Engine Oil With Filter
  • 3.7L and 5.3L Engines
5.7 liters 6.0 quarts
Fuel Tank
  • H3
87.1 liters 23.0 gallons
  • H3T
102.2 liters 27.0 gallons
Transfer Case 1.5 liters 1.6 quarts
Transmission - Drain and Refill
  • Automatic - Pan Removal
4.7 liters 5.0 quarts
  • Automatic - Overhaul
10.6 liters 11.0 quarts
  • Manual - RWD
2.2 liters 2.3 quarts
  • Manual - 4WD
2.3 liters 2.4 quarts
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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