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 941 (ENGINE CONTROL SYSTEM & FUEL SYSTEM - 6.6L (LMM) - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL INJECTION PUMP REPLACEMENTREMOVAL 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 Savana Special, 2007 GMC Savana Camper Special, 2007 GMC Savana, and 2007 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Left Fuel Rail At Pump Pipe

Courtesy of GENERAL MOTORS CORP.

Remove the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement (LLY, LBZ) or Thermostat Housing Crossover Replacement (LMM) .
Remove the left fuel rail fuel feed pipe. Refer to Fuel Rail Fuel Feed Pipe Replacement - Left Side .
Remove the right fuel rail fuel feed pipe. Refer to Fuel Rail Fuel Feed Pipe Replacement - Right Side .
Remove the center intake manifold. Refer to Center Intake Manifold Replacement (LLY, LBZ) or Center Intake Manifold Replacement (LMM) .
Disconnect the injection pump electrical connector.

Fig 2: View Of Fuel Hose Connections

Courtesy of GENERAL MOTORS CORP.

Compress the injection pump hose clamps at the fuel line.
Disconnect the hoses from fuel lines.

Fig 3: View Of Fuel Injection Pump

Courtesy of GENERAL MOTORS CORP.

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.