2006 Hummer H3 L5-3.5LFACTORY OEM SERVICE PROCEDURE

Engine Oil: Service and Repair



Engine Oil and Oil Filter Replacement
Removal Procedure
1. Remove the oil fill cap.
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
3. Clean away all dirt and debris from the engine oil pan drain plug area.
4. Position an appropriate container under the engine oil pan.

Factory service manual diagram




5. Remove the oil pan drain plug. Allow the engine oil to drain into the container.
6. Position the container under the engine oil filter drain deflector.

Factory service manual diagram




Important: Ensure the old oil filter seal is not left on the engine block.

7. Remove the oil filter using a suitable wrench. Allow the engine oil to drain to the oil filter drain deflector and into the container.

Installation Procedure

Factory service manual diagram




1. Lubricate the oil filter seal with clean engine oil.

Notice: Refer to Component Fastener Tightening Notice in Service Precautions.

2. Install a NEW oil filter.
Tighten the filter to 30 Nm (22 ft. lbs.).
3. Wipe the excess oil from the oil filter drain deflector.

Factory service manual diagram




4. Install the oil pan drain plug.
Tighten the oil pan drain plug to 26 Nm (19 ft. lbs.).
5. Lower the vehicle.
6. Fill the crankcase with the proper type and amount of engine oil. Refer to Fluid and Lubricant Recommendations and Capacities - Approximate Fluid.
7. Install the oil fill cap.
8. Start the engine and check the oil pressure gage for the appropriate pressure to build up.
9. Shut the engine off.
10. Inspect under the vehicle in the oil filter and oil pan drain plug areas for leaks.
11. Remove the oil level indicator and check for the correct oil level. Add oil if necessary.
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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