Hummer H3. Manual — part 368
79. Install the outlet radiator hose. Refer to Radiator Outlet Hose Replacement (LLR) .
80. Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill) or
Cooling System Draining and Filling (Vac-N-Fill) .
81. Install the battery box. Refer to Battery Box Replacement .
82. Install the hood. Refer to Hood Replacement .
83. Fill the engine oil, if previously drained. Refer to Engine Oil and Oil Filter
Replacement.
84. Charge the A/C system. Refer to Refrigerant Recovery and Recharging .
Engine Final Test and Inspection
Complete the following procedure after the engine is installed in the vehicle:
1. With the ignition OFF or disconnected, crank the engine several times. Listen for any
unusual noises or evidence that any parts are binding.
2. Start the engine and listen for abnormal conditions.
3. Check the vehicle oil pressure gage or light and confirm that the engine has acceptable oil
pressure.
4. Run the engine at approximately 1,000 RPM until the engine reaches normal operating
temperature.
5. While the engine continues to idle raise and support the vehicle. Refer to Lifting and
Jacking the Vehicle .
6. Inspect for oil, coolant, transmission fluid and exhaust leaks while the engine is idling.
7. Lower the vehicle.
8. Perform the CKP variation learn procedure. Refer to Crankshaft Position System
Variation Learn .
9. Perform a final inspection for the proper engine oil, transmission fluid and coolant levels.
10. Road test the vehicle.
ENGINE OIL AND OIL FILTER REPLACEMENT
Removal Procedure
1. Remove the oil fill cap.
2. Remove the engine shield. Refer to Engine Shield Replacement .
3. Remove the oil pan skid plate. Refer to Oil Pan Skid Plate Replacement .
4. Clean away all dirt and debris from the engine oil pan drain plug area.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
5. Position an appropriate container under the engine oil pan.
Fig. 319: View Of Oil Pan Drain Plug
Courtesy of GENERAL MOTORS CORP.
6. Remove the oil pan drain plug.
Allow the engine oil to drain into the container.
7. Position the container under the engine oil filter drain deflector.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
Fig. 320: View Of Oil Filter
Courtesy of GENERAL MOTORS CORP.
8. Remove the oil filter using a suitable wrench.
IMPORTANT: Ensure the old oil filter seal is not left on the engine block.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
Allow the engine oil to drain to the oil filter drain deflector and into the container.
Installation Procedure
Fig. 321: View Of Oil Filter
Courtesy of GENERAL MOTORS CORP.
1. Lubricate the oil filter seal with clean engine oil.
2007 Hummer H3
2007 ENGINE Engine Mechanical - 3.7L - H3
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