Chevrolet Silverado / GMC Sierra. Manual — part 78

38834-1. See Special Tools.

3. Install the J 38834-2 onto the J 38834-1 so that the smaller diameter of the J 38834-2

will be facing the front of the engine block.

4. Install the J 38834-2 on the inside of the balance shaft front bearing bore.

5. Lubricate the NEW balance shaft rear bearing with clean engine oil.

6. Install the balance shaft rear bearing onto the J 38834-2.

7. Align the balance shaft rear bearing for installation.

8. Using a wrench, secure the J 38834-1 into place.

9. Rotate the J 38834 nut until the balance shaft rear bearing is properly and completely

pushed into the balance shaft rear bearing bore. See Special Tools.

2. Remove the J 38834 . See Special Tools.

3. Install the balance shaft. Refer to Balance Shaft Replacement.

CAMSHAFT REPLACEMENT

Removal Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 243: View Of Balance Shaft Drive Gear
Courtesy of GENERAL MOTORS CORP.

1. Remove the radiator. Refer to Radiator Replacement (4.3, 4.8, 5.3, and 6.0L) .

2. Remove the air conditioning (A/C) condenser. Refer to Condenser Replacement .

3. Remove the lifters. Refer to Valve Lifter Replacement.

4. Remove the timing chain and the camshaft sprocket. Refer to Camshaft Timing Chain,

Sprocket, and Tensioner Replacement.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

5. Remove the balance shaft drive gear.

Fig. 244: View Of Camshaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.

6. Remove the camshaft retainer bolts and retainer.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 245: Using Bolts To Handle Camshaft
Courtesy of GENERAL MOTORS CORP.

7. Remove the engine camshaft.

1. Install the three 5/16-18 x 4.0 inch bolts into the engine camshaft front bolt holes.

2. Using the bolts as a handle, carefully rotate and pull the engine camshaft out of the

camshaft bearings.

NOTE:

All camshaft journals are the same diameter, so care must be
used in removing or installing the camshaft to avoid damage to
the camshaft bearings.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado