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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 330 (ENGINE MECHANICAL - 2.2L)REMOVAL AND INSTALLATIONIN-VEHICLEENGINE REPLACEMENTREMOVAL
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8

Engine Replacement: Removal

2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Removal
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: TO AVOID FROM HAVING UNSTABLE VEHICLE ON THE HOIST, BE SURE TO PROPERLY POSITION VEHICLE. THIS SHOULD BE CONSIDERED WHEN MAJOR COMPONENTS ARE BEING REMOVED (ENGINE AND TRANSAXLE ASSEMBLIES).
  1. Disconnect negative battery cable and remove battery.
  2. Disconnect intake air temperature (IAT) sensor connector.
  3. Loosen clamp at air cleaner assembly.
  4. Remove pushpin attachment from outlet resonator/duct assembly to support bracket.
  5. Loosen clamp at throttle body assembly.
  6. Disconnect PVC fresh air vent hose at cam cover.
  7. Remove outlet resonator/duct assembly.
    Fig 1: Removing Outlet Resonator/Duct Assembly
    G01039283Courtesy of GENERAL MOTORS CORP.
  8. Cover throttle body opening with a shop towel. Use shop air to remove any dirt around throttle body and intake manifold to cylinder head.
    Fig 2: Covering Throttle Body Opening With A Shop Towel
    G01039284Courtesy of GENERAL MOTORS CORP.
  9. Remove underhood fuse block (UHFB) fuse cover by separating clips on each side.
    Fig 3: Removing Underhood Fuse Block (UHFB)
    G01039285Courtesy of GENERAL MOTORS CORP.
  10. Remove UHFB fuse cover.
  11. Remove inner UHFB fuse cover.
  12. Loosen three connector through bolts at top UHFB.
  13. Remove battery and electronic power steering feed wire connection nut and remove wire from UHFB stud.
  14. Release tabs on each side of UHFB with a screwdriver.
  15. Raise UHFB from connectors. Disconnect electrical connectors on side of UHFB.
  16. Remove UHFB from vehicle.
  17. Remove battery cable and harness attachment clips on side of battery tray/UHFB bracket assembly.
  18. Remove main connectors from UHFB housing.
  19. Lay battery positive cable over engine. (Battery cables will be removed with powertrain assembly.)
  20. Remove electrical harness clips to battery tray.
  21. Remove UHFB and battery tray bolts.
  22. Remove UHFB and battery tray.
  23. Disconnect electrical connectors at transaxle controller (TCM) near brake booster (if equipped).
  24. Remove engine-to-body ground bolt.
  25. Disconnect connector for rear O2 sensor.
  26. Remove vacuum hose with check valve from booster and lay across engine.
  27. Disconnect 8-way electrical connector.
  28. Remove main engine harness (Grey connector) and lay over engine assembly. (This will allow engine harness to be removed with powertrain.)
    NOTE: Do not remove shiftier cable from bracket before removing cable from transaxle range switch. Damage to manual shift linkage may occur.
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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.