Chevrolet Silverado / GMC Sierra. Service manual — part 1635

Fig. 86: Cooling Fan Motor & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Install the cooling fan motor(s).

2. Install the cooling fan motor bolts.

Tighten: Tighten the bolts to 10 N.m (89 lb in).

3. Install the cooling fan blades. Refer to Engine Cooling Fan Replacement (Non-HP2).

COOLING FAN AND SHROUD REPLACEMENT (NON-HP2)

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Removal Procedure

1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or

Cooling System Draining and Filling (Static Fill)

2. Remove air inlet duct.

3. Disconnect upper radiator hose from radiator.

Fig. 87: Radiator, Inlet & Outlet Hose & Clamps
Courtesy of GENERAL MOTORS CORP.

4. Disengage the radiator inlet hose clip (2) at the fan shroud.

2008 Chevrolet Silverado 1500

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

Fig. 88: View Of Surge Tank Inlet Hose & Clamp
Courtesy of GENERAL MOTORS CORP.

5. If necessary, reposition the surge tank inlet hose clamp at the radiator.

6. If necessary, remove the surge tank inlet hose from the radiator.

2008 Chevrolet Silverado 1500

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

Fig. 89: Cooling Fan Electrical Connectors
Courtesy of GENERAL MOTORS CORP.

7. Disconnect the electrical connectors from the cooling fans.

8. Remove the clip attaching the wiring harness to the shroud.

9. Remove transmission cooler lines bolts from fan shroud.

2008 Chevrolet Silverado 1500

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