SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2001C3500 HD 8.1 G, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1756 (ENGINE CONTROLS - 6.6L - REPAIR INSTRUCTIONS)REPAIR INSTRUCTIONSFUEL INJECTOR CONTROL MODULE REPLACEMENTREMOVAL PROCEDURE
2001 Chevrolet C3500 HD 8.1 G, Automatic

Removal Procedure

2001 Chevrolet C3500 HD 8.1 G, AutomaticSECTION Removal Procedure
WARNING: This page is about a different car, the 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, 2001 Chevrolet Silverado, and 2001 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    CAUTION:

    Refer to BATTERY DISCONNECT CAUTION in Cautions and Notices.

  1. Disconnect the batteries.
  2. Remove the duct between the air cleaner and the turbocharger inlet housing.
    3. Fig 1: PCV Hose
    GM744239Courtesy of GENERAL MOTORS COMPANY
  3. Remove the clamp (2) from the PCV hose (1) to pipe and move the hose aside.
  4. Remove the fuel filler cap to relieve pressure.
    5. Fig 2: View Of Fuel Injection Control Module Components
    GM660358Courtesy of GENERAL MOTORS COMPANY
  5. Remove the large tie wraps from the fuel injector control module (6) and harness.
  6. Loosen the fuel lines (3) at the fuel injection control module (6).
  7. Remove the 3 mounting bolts (1,5).
  8. Remove the insulators (2) between the fuel injection control module and bracket by lifting up the module and reaching underneath.
    9. Fig 3: View Of Fuel Injection Control Module Electrical Connectors
    GM744247Courtesy of GENERAL MOTORS COMPANY
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.