Chevrolet Silverado / GMC Sierra. Service manual — part 79

3. Remove the bolts from the front of the engine camshaft.

4. Clean and inspect the camshaft and/or bearings, if necessary. Refer to Camshaft and

Bearings Cleaning and Inspection.

Installation Procedure

Fig. 246: Using Bolts To Handle Camshaft
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Whenever a new camshaft is installed, perform the following:

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

1. Apply lubricant or engine oil supplement to the following components:

The engine camshaft lobes

The camshaft bearing journals

The camshaft bearings

Refer to Sealers, Adhesives, and Lubricants for the correct part number.

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

3. Using the bolts as a handle, install the engine camshaft.

4. Remove the 3 bolts from the front of the engine camshaft.

Change the engine oil and filter.

Add engine oil supplement to the engine oil. Refer to
Sealers, Adhesives, and Lubricants for the correct part
number.

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

Fig. 247: View Of Camshaft Retainer & Bolts
Courtesy of GENERAL MOTORS CORP.

5. If reusing the fasteners, apply threadlocker to the threads of the camshaft retainer bolts.

Refer to Sealers, Adhesives, and Lubricants for the correct part number.

6. Install the camshaft retainer and bolts.

Tighten: Tighten the bolts to 12 N.m (106 lb in).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

7. Install the balance shaft drive gear. Refer to Balance Shaft Installation, for alignment of

the balance shaft drive gear and the driven gear.

8. Install the timing chain and camshaft sprocket. Refer to Camshaft Timing Chain,

Sprocket, and Tensioner Replacement.

9. Install the lifters. Refer to Valve Lifter Replacement.

10. Install the A/C condenser. Refer to Condenser Replacement .

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

OIL FILTER ADAPTER REPLACEMENT

Removal Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado