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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Control System - 4.8L, 5.3L & 6.0L (Introduction)) >> Repair Instructions >> Evaporative Emission (EVAP) Hoses/Pipes Replacement - Chassis (1500 Series) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Fuel/EVAP Line Bundle
    GM1224304Courtesy of GENERAL MOTORS CORP.
  1. Install the fuel/EVAP line bundle.
  2. Install the fuel and EVAP line clips to the frame and brace.
    3. Fig 2: View Of Fuel Feed & EVAP Lines At Fuel Tank
    GM1238596Courtesy of GENERAL MOTORS CORP.
  3. Remove the caps from the fuel and EVAP lines at the fuel tank.
  4. Connect the fuel feed and EVAP lines to the fuel tank lines. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .
    5. Fig 3: View Of Fuel Line Bracket Bolt
    GM1224302Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  5. Install the fuel line bracket bolt.

    Tighten:  Tighten the bolt to 12 N.m (106 lb in).

    6. Fig 4: View Of Fuel Line Clip At Bracket
    GM1549616Courtesy of GENERAL MOTORS CORP.
  6. If equipped with 4WD, install the fuel hose/pipe clip to the bracket on the transfer case.
  7. Install the fuel hose/pipe clip to the bracket on the automatic transmission.
    8. Fig 5: View Of Fuel Pipe Bracket & Nut At Bellhousing
    GM1238747Courtesy of GENERAL MOTORS CORP.
  8. Install the fuel pipe bracket to the bellhousing stud.
  9. Install the fuel pipe bracket nut.

    Tighten:  Tighten the nut to 10 N.m (89 lb in).

    10. Fig 6: Identifying Fuel Feed & EVAP Pipes
    GM1238585Courtesy of GENERAL MOTORS CORP.
  10. Reposition and install the front propeller shaft bolts. Refer to Propeller Shaft Replacement - Front in Propeller Shaft.
  11. Lower the vehicle.
  12. Remove the caps from the fuel rail and EVAP line.
  13. Connect the EVAP canister purge line (2).
  14. Connect the fuel feed line (1) at the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
  15. Install the fuel fill cap.
  16. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
  17. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.
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