Hummer H3. Manual — part 134

1. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube

Replacement.

2. Remove the oil pan skid plate. Refer to Oil Pan Skid Plate Replacement in Frame and

Underbody.

3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement.

4. Remove the crossmember. Refer to Crossmember Replacement in Frame and Underbody.

Fig. 183: View Of Mounting Bracket To Frame Bolts
Courtesy of GENERAL MOTORS CORP.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

5. Remove the differential carrier assembly bushing to frame bolts ONLY.

6. Pull the differential carrier assembly downward.

7. Secure the pinion yoke, in order to prevent the differential carrier from rotating.

Fig. 184: View Of Transmission Mounting Bolts
Courtesy of GENERAL MOTORS CORP.

8. Remove the service slot plug.

9. Remove the nuts securing the fuel hose/pipe bracket to the transmission, and position aside.

10. Remove 4 lower transmission mounting bolts that are attached to the oil pan.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

11. Remove the power steering gear. Refer to Power Steering Gear Replacement in Power

Steering System.

12. Pull the power steering gear downward in order to gain access to the oil pan.

13. Disconnect the engine wiring harness retainers from the oil pan.

Fig. 185: Oil Pan Mounting
Courtesy of GENERAL MOTORS CORP.

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3

14. Remove the oil pan bolts.

15. Install 2 bolts in the threaded holes at the rear of the oil pan to act as jack screws and tighten

evenly to release the oil pan from the engine block.

16. Remove the oil pan.

17. Remove the 2 bolts from the jack screw holes.

18. Clean and inspect the oil pan. Refer to Oil Pan Cleaning and Inspection.

19. Clean and inspect the engine block sealing surface.

Installation Procedure

Fig. 186: View Of Oil Pan Sealant Application
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The oil pan must be installed within 10 minutes from when

2006 Hummer H3

2006 ENGINE Engine Mechanical - 3.5L (L52) - H3