Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1976 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSWATER PUMP REPLACEMENT (LCS/LY7)INSTALLATION PROCEDURE

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Installation Procedure

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Installation Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Water Pump Components

Courtesy of GENERAL MOTORS CORP.

Install a NEW water pump seal.
Install the water pump.

CAUTION: Refer to Fastener Caution .

Install the water pump bolts and tighten to 10 N.m (89 lb in).

Fig 2: Locating Water Pump Pulley & Bolts

Courtesy of GENERAL MOTORS CORP.

Install the water pump pulley and the water pump pulley bolts.

Fig 3: EN 46104 Installed On Water Pump Pulley

Courtesy of GENERAL MOTORS CORP.

Use the EN 46104 in order to retain the water pump pulley.
Install the water pump pulley bolts and tighten to 10 N.m (89 lb in).
Install the drive belt. Refer to Drive Belt Replacement (LY7) or Drive Belt Replacement (LCS) .
Fill the cooling system. Refer to Cooling System Draining and Filling (Static Fill With HP5) or Cooling System Draining and Filling (Static Fill Without HP5) or Cooling System Draining and Filling (GE 47716 Fill With HP5) or Cooling System Draining and Filling (GE 47716 Fill Without HP5) .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.