Chevrolet Silverado / GMC Sierra. Service manual — part 592

Fig. 54: View Of Exhaust Outlet Inspection Areas
Courtesy of GENERAL MOTORS CORP.

1. Clean the exhaust outlet.

2. Clean the exhaust outlet mating surfaces.

3. Inspect the exhaust outlet for dents or cracks.

4. Replace the exhaust outlet if any damage is found.

FUEL INJECTION PUMP CLEANING AND INSPECTION

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 55: View Of Fuel Injection Pump Adapter & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the fuel injection pump adapter bolts.

2. Remove the fuel injection pump adapter.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 56: View Of Fuel Injection Pump & Adapter O-Rings
Courtesy of GENERAL MOTORS CORP.

3. Remove the O-ring from the fuel injection pump and discard.

4. Remove the O-ring from the fuel injection pump adapter and discard.

5. Clean the fuel injection pump adapter mating surfaces.

6. Clean the fuel injection pump mating surfaces.

7. Inspect the fuel injection pump and adapter for damage.

8. Replace component if any damage is found.

9. Install a new O-ring onto fuel injection pump.

10. Install a new O-ring onto fuel injection pump adapter.

11. Lubricate the O-rings with engine oil.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 57: View Of Fuel Injection Pump Adapter & Bolts
Courtesy of GENERAL MOTORS CORP.

12. Install the fuel injection pump adapter to the fuel injection pump.

13. Install the fuel injection pump adapter bolts.

Tighten: Tighten the fuel injection pump adapter bolts to 21 N.m (15 lb ft).

FUEL INJECTOR CLEANING AND INSPECTION

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado