Chevrolet Silverado / GMC Sierra. Manual — part 30

6. Install the throttle body.

7. Install the rear throttle body stud. If reusing the old stud, apply threadlock to the threads.

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

Tighten: Tighten the stud to 9 N.m (80 lb in).

Fig. 63: PCV Valve Cover
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

8. If required, install a NEW O-ring seal to the PCV cover. Apply clean engine oil to the seal.

9. Install the PCV valve cover.

Fig. 64: Power Brake Booster Vacuum Fitting
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

10. If required, install a NEW O-ring seal. Apply clean engine oil to the seal.

11. Install the power brake booster vacuum fitting.

Fig. 65: Fuel Meter Body O-Ring Seal
Courtesy of GENERAL MOTORS CORP.

12. Install a NEW O-ring seal to the fuel meter body.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 66: Intake Manifold Upper Gasket
Courtesy of GENERAL MOTORS CORP.

13. Install a NEW upper intake manifold gasket.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado