2004 GMC Envoy RWDFACTORY OEM SERVICE PROCEDURE

Removal Procedure

    Fig 1: Disassembling/Assembling Air Cleaner Housing
    GM1361132Courtesy of GENERAL MOTORS CORP.
  1. Remove the air cleaner cover/resonator (2) then position the air cleaner element (6) and air outlet duct (3) out of the way. Refer to Air Cleaner Element Replacement .
  2. Remove the air inlet duct (5) from the lower air cleaner housing/washer solvent tank assembly (4).
    3. Fig 2: Locating Electrical Connectors
    GM907812Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the following electrical connectors:
    • Windshield washer pump (1)
    • Headlamp washer pump (2), if equipped
    • Low solvent level sensor (4)
    • Lift gate washer pump (6), if equipped
  4. Remove the washer solvent level sensor wire harness from the wire harness retaining clips (3, 5).
    5. Fig 3: Disconnecting/Connecting Headlight Washer Hose
    GM1362808Courtesy of GENERAL MOTORS CORP.
  5. If applicable, disconnect the headlamp washer hose from the headlamp washer pump located on the lower air cleaner housing/washer solvent tank. Cap the headlamp washer pump outlet fitting to prevent loss of washer solvent.
    6. Fig 4: Removing/Installing Air Cleaner Assembly
    GM1361745Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the washer pump hoses (3) and plug the washer pump outlet ports to prevent loss of washer solvent.
  7. Remove the 2 air cleaner housing/washer solvent tank assembly retaining nuts (1) from the mounting studs.
  8. Lift the lower air filter housing/washer solvent tank assembly (2) off of the studs and remove the assembly.
Factory Service Tools

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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.

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