Chevrolet Silverado / GMC Sierra. Service manual — part 1989

Tighten:

1. Tighten the bolt a first pass to 50 N.m (37 lb ft).

2. Tighten the bolt a final pass to 140 degrees using J 45059 .

Fig. 321: View Of Special Tool & Bolts
Courtesy of GENERAL MOTORS CORP.

7. Remove the J 42386-A (1) and bolts. See Special Tools .

8. Install the starter motor. Refer to Starter Motor Replacement (4.8L, 5.3L, 6.0L, and

6.2L) .

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

9. Install the cooling fan and shroud. Refer to Cooling Fan and Shroud Replacement (Non-

HP2) .

10. Install the A/C drive belt. Refer to Air Conditioning Compressor Belt Replacement.

11. Perform the crankshaft position (CKP) system variation learn procedure. Refer to

Crankshaft Position System Variation Learn .

CRANKSHAFT FRONT OIL SEAL REPLACEMENT (LMG, LY2 AND LY5)

Tools Required

J 41478 Crankshaft Front Oil Seal Installer. See Special Tools .

Removal Procedure

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. 322: View Of Crankshaft Front Oil Seal
Courtesy of GENERAL MOTORS CORP.

1. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement.

2. Remove the crankshaft front oil seal (1) from the front cover.

Installation Procedure

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. 323: View Of Crankshaft Front Oil Seal
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

Do not lubricate the oil seal sealing surface.

Do not reuse the crankshaft front oil seal.

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