Chevrolet Silverado / GMC Sierra. Manual - part 43
2. Remove the engine wiring harness bracket.
Fig. 114: View Of TP Sensor, IAC Motor, ECT Sensor, Control Port Injector
Module & Engine Harness Clip Bolt
Courtesy of GENERAL MOTORS CORP.
3. Remove the engine wiring harness clip bolt (4).
4. Disconnect the engine coolant temperature (ECT) sensor electrical connector (5).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
5. Reposition the engine wiring harness and bracket.
6. Disconnect the power brake booster vacuum hose from the vacuum fitting.
Fig. 115: Locating PCV Valve Hose At Valve & Rocker Cover
Courtesy of GENERAL MOTORS CORP.
7. Remove the positive crankcase ventilation (PCV) valve hose from the valve cover and
rocker cover.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 116: Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.
8. Remove the rocker arm cover bolts.
9. Remove and discard the rocker arm cover bolt grommets, if necessary.
10. Remove the rocker arm cover.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 117: View Of Rocker Arm Cover And Gasket
Courtesy of GENERAL MOTORS CORP.
11. Remove and discard the rocker arm cover gasket.
12. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover
Cleaning and Inspection.
Installation Procedure
IMPORTANT: Do not reuse the rocker cover gasket or the rocker arm cover bolt
grommets.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado