Chevrolet Silverado / GMC Sierra. Service manual — part 567

Fig. 155: Measuring Crankshaft End Play Using J 7872
Courtesy of GENERAL MOTORS CORP.

2. Measure crankshaft end play using J 7872 . The production value is 0.04-0.205 mm

(0.0016-0.0081 in) and the service limit is 0.54 mm (0.0213 in). Replace the thrust bearings
upon reassembly if the measured value exceeds the service limit.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 156: View Of Crankshaft Bearing Cap Side Bolts
Courtesy of GENERAL MOTORS CORP.

3. Remove the crankshaft bearing cap side bolts.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 157: View Of Crankshaft Bearing Cap & Bolts
Courtesy of GENERAL MOTORS CORP.

4. Remove the crankshaft bearing cap bolts.

5. Remove the crankshaft bearing caps.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

6. Set the bolts aside for use in plastic gauging if needed.

7. Remove the crankshaft assembly.

8. Remove the crankshaft bearings from the engine block and the bearing caps.

9. Mark crankshaft bearings and caps so they may be installed in their original position.

ENGINE BLOCK CLEANING AND INSPECTION

IMPORTANT: All remanufactured cylinder blocks are steel stamped on both

sides of the fuel pressure pump boss. The stamp indicates
whether the cylinder is standard or over-bored, and if the deck is
standard or has been milled.

Stamped ID

Cylinders Bore Size (in.)

Top Deck (STD or Milled)

SS

STD

STD

01S

0.010

STD

02S

0.020

STD

03S

0.030

STD

SM

STD

Milled

01M

0.010

Milled

02M

0.020

Milled

03M

0.030

Milled

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado