Chevrolet Silverado / GMC Sierra. Manual — part 271

Special Tools

J 3049-A Valve Lifter Remover

Removal Procedure

Fig. 127: View Of Valve Lifter Guide And Bolt
Courtesy of GENERAL MOTORS CORP.

1. Remove the cylinder head and gasket. Refer to Cylinder Head Replacement - Left Side

or Cylinder Head Replacement - Right Side.

2. Remove the valve lifter guide bolts (1).

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

3. Remove the valve lifters and guide.

Fig. 128: Using J 3049-A To Remove Sticking Valve Lifters
Courtesy of GENERAL MOTORS CORP.

4. Use J 3049-A or equivalent in order to remove the valve lifters, if required.

IMPORTANT: Some valve lifters may be stuck in their bores because of

gum or varnish deposits.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 129: View Of Valve Lifters & Lifter Guides
Courtesy of GENERAL MOTORS CORP.

5. Remove the valve lifters from the guide.

6. Organize or mark the components so that they can be installed in the same location from

which they were removed.

7. Clean and inspect the valve lifters. Refer to Valve Lifters and Guides Cleaning and

Inspection.

Installation Procedure

IMPORTANT: When reusing valve lifters, install the lifters to their original

locations.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

Fig. 130: View Of Valve Lifters & Lifter Guides
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the valve lifters and engine block valve lifter bores with clean engine oil.

2. Insert the valve lifters into the lifter guides.

Align the flat area on the top of the lifter with the flat area in the lifter guide bore. Push the
lifter completely into the guide bore.

2008 Hummer H2

2008 ENGINE Engine Mechanical - 6.2L - H2

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