Chevrolet Silverado / GMC Sierra. Service manual — part 1632

Fig. 74: 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

Tighten: Tighten the nut clockwise to 56 N.m (41 lb ft).

Fig. 75: Identifying Fan Shroud Mounting Brackets & Bolts
Courtesy of GENERAL MOTORS CORP.

5. Position the engine cooling fan shroud on the 3 mounting brackets (1).

6. Install the bolts. Loosely tighten the top mounting bolt at the oil filler neck.

2008 Chevrolet Silverado 1500

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

Fig. 76: View Of Cooling Fan Shroud
Courtesy of GENERAL MOTORS CORP.

7. Center the engine cooling fan shroud to the fan blade in 3 places (1).

IMPORTANT: Maintain a 6 mm (0.25 in) minimum clearance at all 3 places.

2008 Chevrolet Silverado 1500

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

Fig. 77: Cooling Fan Shroud And Rubber Seal
Courtesy of GENERAL MOTORS CORP.

8. Make sure the orientation of the cooling fan shroud (1) and rubber seal (2) are installed

correctly

IMPORTANT: Improper installation could cause damage to the fan and

shroud while vehicle is in service.

2008 Chevrolet Silverado 1500

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