Chevrolet Silverado / GMC Sierra. Service manual — part 1627

Fig. 55: View Of Fan Clutch Hub & Nut
Courtesy of GENERAL MOTORS CORP.

4. Install a long pin bar into the fan hub (1).

5. Use a J 41240-5A to remove the fan hub nut (2) from the hub in a counterclockwise

rotation.

2008 Chevrolet Silverado 1500

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

6. Remove the fan and the engine cooling fan shroud as an assembly.

Fig. 56: View Of Fan Clutch & Fan Blade
Courtesy of GENERAL MOTORS CORP.

7. Remove the fan clutch bolts from the rear of the fan blade.

8. Separate the fan clutch from the fan blade.

Installation Procedure

CAUTION: Do not use or attempt to repair a damaged cooling fan

assembly. Replace damaged fans with new assemblies. An
unbalanced cooling fan could fly apart causing personal
injury and property damage.

2008 Chevrolet Silverado 1500

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

Fig. 57: View Of Fan Blade & Fan Clutch
Courtesy of GENERAL MOTORS CORP.

1. Install the fan clutch onto the fan blade.

2. Install the fan clutch bolts

Tighten: Tighten the bolts to 23 N.m (17 lb ft).

3. Install the fan and engine cooling fan shroud assembly to the fan hub.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Fig. 58: View Of Fan Clutch Hub & Nut
Courtesy of GENERAL MOTORS CORP.

4. Use a J 41240-5A on the fan clutch hub nut (2) to install a long pry bar to the fan clutch hub

(1).

2008 Chevrolet Silverado 1500

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