Chevrolet Silverado / GMC Sierra. Service manual — part 2044

3. Install the J 42386-A (1) and bolts. See Special Tools . Use one M10-1.5 x 120 mm and

one M10-1.5 x 45 mm bolt for proper tool operation.

Tighten: Tighten the J 42386-A bolts to 50 N. See Special Tools .m (37 lb ft).

Fig. 51: View Of Camshaft Sprocket, Timing Chain & Sprocket Bolt
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Ensure that the teeth of the J 42386-A mesh with the teeth of

the engine flywheel. See Special Tools .

NOTE:

Do not turn the crankshaft assembly after the timing chain has

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

4. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are

aligned.

5. Remove the camshaft sprocket bolt (206).

6. Remove the camshaft sprocket (205) and timing chain (208).

Fig. 52: View Of Timing Chain Tensioner & Bolts
Courtesy of GENERAL MOTORS CORP.

7. Remove the timing chain tension bolts (231) and tensioner (232).

been removed in order to prevent damage to the piston
assemblies or the valves.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 53: View Of Crankshaft Sprocket Special Tools
Courtesy of GENERAL MOTORS CORP.

8. Using the J 41816-2 (1), the J 41558 (2), bolts (3) and the J 8433 (4) in order to remove

the crankshaft sprocket. See Special Tools .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 54: View Of Crankshaft Sprocket
Courtesy of GENERAL MOTORS CORP.

9. Remove the crankshaft sprocket (207).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado