Chevrolet Silverado / GMC Sierra. Service manual — part 161

Fig. 538: Valve Lifter Pushrod Guides
Courtesy of GENERAL MOTORS CORP.

4. Inspect the valve lifter pushrod guides for excessive wear.

5. Inspect the valve lifter pushrod guides for cracks or damage.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 539: Inspecting Areas Of Valve Lifters
Courtesy of GENERAL MOTORS CORP.

6. Inspect the valve lifter for the following:

Broken or damaged clip (1)

Worn pushrod socket (2)

Scuffed or worn lifter body (3)

If the valve lifter shows scuffing or wear, inspect the engine block valve lifter bores
for wear.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Worn roller (4)

Loose or damaged pin (5)

Plugged oil hole (6)

CYLINDER HEAD DISASSEMBLE

Tools Required

J 8062 Valve Spring Compressor. See Special Tools.

Disassemble

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 540: Compressing Valve Springs
Courtesy of GENERAL MOTORS CORP.

CAUTION: Compressed valve springs have high tension against the

valve spring compressor. Valve springs that are not
properly compressed by or released from the valve spring
compressor can be ejected from the valve spring
compressor with intense force. Use care when
compressing or releasing the valve spring with the valve

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado