Chevrolet Silverado / GMC Sierra. Service manual — part 1670

2. Loosen the air cleaner outlet duct clamps from the mass airflow sensor(2).

3. Remove the air cleaner outlet duct.

4. If equipped remove the throttle body heater hose retainer from the fan shroud.

5. If equipped remove the inlet radiator hose retainer from the fan shroud.

Fig. 222: View Of Fan Shroud Retainers

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Courtesy of GENERAL MOTORS CORP.

6. Remove the fan shroud retainers.

Fig. 223: View Of Fan Shroud & Bolts
Courtesy of GENERAL MOTORS CORP.

7. Remove the fan shroud bolts

8. Remove the upper fan shroud.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 224: View Of Fan Shroud & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Install the upper fan shroud.

2. Install the fan shroud bolts.

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

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 225: View Of Fan Shroud Retainers
Courtesy of GENERAL MOTORS CORP.

3. Install the fan shroud retainers.

4. If equipped install the inlet radiator hose retainer to the fan shroud

5. If equipped install the throttle body heater hose retainer to the fan shroud.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado