Chevrolet Silverado / GMC Sierra. Service manual — part 2050

Fig. 74: Identifying Camshaft Retainer Bolts
Courtesy of GENERAL MOTORS CORP.

6. Tighten the camshaft retainer bolts.

Tighten:

Tighten the first design hex head bolts (3) to 25 N.m (18 lb ft).

Tighten the second design TORX® head bolts (4) to 15 N.m (11 lb ft).

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. 75: View Of Compressed Tensioner
Courtesy of GENERAL MOTORS CORP.

7. Compress the timing chain tensioner guide and install the EN 46330 . 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. 76: View Of Camshaft Sprocket & Timing Chain
Courtesy of GENERAL MOTORS CORP.

8. Align the camshaft sprocket so the timing mark is in the 6 o'clock position.

9. Install the camshaft sprocket (205), timing chain (208), and bolt (206).

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. 77: Identifying Camshaft & Crankshaft Marks
Courtesy of GENERAL MOTORS CORP.

10. Inspect the sprockets for proper alignment. The marks on the camshaft sprocket (1) should

be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be
located in the 12 o'clock position.

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