Chevrolet Silverado / GMC Sierra. Service manual — part 384

Fig. 527: View Of Tap Upper & Lower Marks, Fixture Plate & Bushing
Courtesy of GENERAL MOTORS CORP.

10. In order to tap the new threads to the proper depth, rotate the tap into the hole until the

mark (1) on the tap aligns with the top of the drill bushing (3).

11. Remove the fixture plate (2), bushing (3), and bolts.

12. Using compressed air, clean out any chips.

13. Spray cleaner GM P/N 12346139, GM P/N 12377981 (Canadian P/N 10953463), or

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

equivalent, into the hole.

14. Using compressed air, clean any cutting oil and chips out of the hole.

Fig. 528: Lubricating Installer Tool Using Driver Oil
Courtesy of GENERAL MOTORS CORP.

15. Lubricate the threads of the installer tool (2) with the driver oil (1).

IMPORTANT: Do not allow oil or foreign material to contact the OD of the

insert.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 529: View of Bushing Type Insert
Courtesy of GENERAL MOTORS CORP.

16. Install the insert (2) onto the driver tool (1).

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 530: Applying Threadlock To Insert
Courtesy of GENERAL MOTORS CORP.

17. Apply threadlock LOCTITE™ 277, J 42385-109 (1), or equivalent, to the insert OD

threads (2).

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2