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 678 (ENGINE CONTROLS - 4.3L - INTRODUCTION (2 OF 2))REPAIR INSTRUCTIONSFUEL INJECTOR CLEANING PROCEDURE
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Fuel Injector Cleaning Procedure
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Fuel Injector Cleaning Procedure
WARNING: This page is about a different car, the 2006 GMC Sierra and 2006 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Tools Required
- J 38500-A Fuel Injector Cleaner. See Special Tools .
- J 39021 Fuel Injector Coil and Balance Tester. See Special Tools .
- J 39021-210 Injector Tester Adapter Box. See Special Tools .
- J 39021-301 V6 Fuel Injector Test Adapter. See Special Tools .
- J 41413 EVAP Pressure and Purge Station. See Special Tools .
- J 44466-10 Regulator and Hose Assembly. See Special Tools .
- J 44466-11 IAFM Fuel Transfer Tube Recycling Block. See Special Tools .
- J 44466-12 CSFI Fuel Metering Body Jumper Block. See Special Tools .
- J 44466-13 Screws. See Special Tools .
- Loosen the fuel fill cap to relieve vapor pressure in the fuel tank.
- Relieve the fuel system pressure.
- Remove the positive crankcase ventilation (PCV) clean air tube from air inlet duct and set aside.
- Remove the resonator and air inlet duct from throttle body.
- Remove the brake booster vacuum hose and connector from intake manifold.
- Remove the electrical connector from the central sequential fuel injection (CSFI) fuel metering body.
- Remove the spark plug wires from 1, 3 and 5 from the distributor cap.
- Remove the fuel feed pipe bracket stud (3).
- Remove the fuel pipe retainer nuts (2) and retainer (1).
- Remove fuel feed pipe (4).
IMPORTANT:
Make sure that the fuel pipe O-rings, washers, and spacers are present and in their proper position.
RENDER: 1.0x
NO RELATED
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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.