Chevrolet Silverado / GMC Sierra. Service manual — part 1651

Removal Procedure

Fig. 147: View Of Water Outlet, Gasket & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Remove the air cleaner outlet resonator duct. Refer to Air Cleaner Outlet Resonator

Replacement .

2. Remove the radiator inlet hose. Refer to Radiator Inlet Hose Replacement (Non-HP2).

3. Remove the turbocharger coolant bypass valve. Refer to Turbocharger Coolant Bypass

Valve Replacement.

4. Remove the water outlet bolts.

5. Remove the water outlet.

6. Remove and discard the gasket.

Installation Procedure

2008 Chevrolet Silverado 1500

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

Fig. 148: View Of Water Outlet, Gasket & Bolts
Courtesy of GENERAL MOTORS CORP.

1. Install a NEW gasket to the water outlet.

2. Lubricate the O-ring seal with clean engine coolant.

3. Install the water outlet.

4. Install the water outlet bolts.

Tighten: Tighten the bolts to 21 N.m (15 lb ft).

5. Install the radiator inlet hose. Refer to Radiator Inlet Hose Replacement (Non-HP2).

6. Install the air cleaner outlet resonator duct. Refer to Air Cleaner Outlet Resonator

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Replacement .

ENGINE COOLANT THERMOSTAT HOUSING REPLACEMENT (LY2, LH6, LY5, LMG, LY6)

Removal Procedure

2008 Chevrolet Silverado 1500

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

Fig. 149: View Of Radiator Outlet Hose
Courtesy of GENERAL MOTORS CORP.

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 the air cleaner outlet duct. Refer to Air Cleaner Resonator Outlet Duct

Replacement .

3. Reposition the radiator outlet hose clamp at the water pump inlet.

4. Remove the radiator outlet hose from the water pump inlet.

2008 Chevrolet Silverado 1500

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