Chevrolet Silverado / GMC Sierra. Service manual — part 295

Fig. 210: View Of Oil Pump & Bolts
Courtesy of GENERAL MOTORS CORP.

9. Remove the oil pump bolts.

10. Remove the oil pump.

11. Clean and inspect the oil pump. Refer to Oil Pump Cleaning and Inspection.

Installation Procedure

IMPORTANT: Do not allow dirt or debris to enter the oil pump assembly,

cap end as necessary.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 211: View Of Oil Pump & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Align the splined surfaces of the crankshaft sprocket and the oil pump drive gear and install

the oil pump.

2. Install the oil pump onto the crankshaft sprocket until the pump housing contacts the face of

the engine block.

3. Install the oil pump bolts.

Tighten: Tighten the oil pump bolts to 25 N.m (18 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 212: View Of Crankshaft Oil Deflector & Nuts
Courtesy of GENERAL MOTORS CORP.

4. Install the crankshaft oil deflector and nuts until snug.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 213: View Of Oil Pump Screen & O-Ring Seal
Courtesy of GENERAL MOTORS CORP.

5. Lubricate a NEW oil pump screen O-ring seal with clean engine oil.

6. Install the NEW O-ring seal onto the oil pump screen.

IMPORTANT: Push the oil pump screen tube completely into the oil pump

prior to tightening the bolt. Do not allow the bolt to pull the
tube into the pump.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2