Chevrolet Silverado / GMC Sierra. Service manual — part 2182

5. Rotate the crankshaft until 2 opposing flywheel bolt holes are parallel to the oil pan surface.

Fig. 234: View Of J 41480 & J 41476 Installed
Courtesy of GENERAL MOTORS CORP.

6. Install the J 41476 and bolts onto the rear of the crankshaft. See Special Tools .

Tighten:

IMPORTANT: The tapered legs of the alignment tool must enter the rear

housing oil seal bore.

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

1. Tighten the tool mounting bolts until snug. Do not overtighten.

2. Tighten the J 41480 tool-to-rear housing bolts evenly to 12 N. See Special Tools .m

(106 lb in).

3. Tighten the rear housing bolts to 30 N.m (22 lb ft).

7. Remove the 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. 235: Checking Rear Cover-To-Engine Block Proper Installation Position
Courtesy of GENERAL MOTORS CORP.

8. Measure the rear housing-to-engine block oil pan surface for flatness.

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

1. Place a straight edge onto the engine block and rear housing oil pan sealing surfaces.

Avoid contact with the portion of the gasket that protrudes into the oil pan surface.

2. Insert a feeler gage between the rear housing and the straight edge. The housing must

be flush with the oil pan or no greater than 0.5 mm (0.02 in) below flush.

9. If the rear housing-to-engine block oil pan surface alignment is not within specifications,

repeat the housing alignment procedure.

10. If the correct rear housing-to-engine block alignment at the oil pan surface cannot be

obtained, replace the rear housing.

CRANKSHAFT REAR OIL SEAL INSTALLATION

Special Tools

J 41479 Crankshaft Rear Oil Seal Installer. See Special Tools .

J 41479-2A Crankshaft Rear Oil Seal Installation Guide

Installation

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