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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1094 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSWATER PUMP REPLACEMENT (LMM)REMOVAL PROCEDURE

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Removal Procedure

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Removal Procedure

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Remove the left wheelhouse inner panel. Refer to Front Wheelhouse Liner Replacement - Left Side (Chevrolet) or Front Wheelhouse Liner Replacement - Left Side (GMC) .
Remove the radiator outlet hose. Refer to Radiator Outlet Hose Replacement .
Remove the thermostat bypass pipe. Refer to Thermostat Bypass Pipe Replacement Diesel .
Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

Fig 1: Identifying Water Pump Outlet Pipe Nuts & Studs
Courtesy of GENERAL MOTORS CORP.
Remove the water pump to engine coolant pipe nuts (2) from the studs (1).
Remove the engine wiring harness retainer from the inner stud.

Fig 2: Water Pump Outlet Pipe Gasket, Water Pump, O-Ring, Nut And Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the water pump bolts. Note the location of the bolts. The bolts are three different lengths.
Remove the water pump.
Remove and discard the water pump O-ring and coolant pipe gasket.
If required, clean and inspect the water pump. Refer to Water Pump Cleaning and Inspection .

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.