Chevrolet Silverado / GMC Sierra. Service manual — part 49

Fig. 138: View Of Air Cleaner Outlet Duct Clamp
Courtesy of GENERAL MOTORS CORP.

13. Tighten the air cleaner outlet duct clamp at the MAF/IAT sensor.

Tighten: Tighten the clamp to 4 N.m (35 lb in).

VALVE ROCKER ARM AND PUSH ROD REPLACEMENT

Removal Procedure

IMPORTANT: Mark, sort, and organize all the components for assembly.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 139: Identifying Valve Rocker Arms
Courtesy of GENERAL MOTORS CORP.

1. Remove the rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left

Side or Valve Rocker Arm Cover Replacement - Right Side.

2. Remove the rocker arms.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 140: View Of Valve Rocker Arm Supports
Courtesy of GENERAL MOTORS CORP.

3. Remove the rocker arm supports.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 141: View Of Valve Pushrods
Courtesy of GENERAL MOTORS CORP.

4. Remove the pushrods.

5. Clean and inspect the rocker arms and/or pushrods, if necessary. Refer to Valve Rocker

Arm and Push Rod Cleaning and Inspection.

Installation Procedure

IMPORTANT: Be sure to keep parts in order. Parts must be reinstalled into the

original location and position.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado