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.
2004 GMC Envoy 4WDFACTORY OEM SERVICE PROCEDURE
Removal Procedure
- Remove the radiator support diagonal brace if applicable. Refer to Brace Replacement - Radiator Support Diagonal in Body Front End.
- Disconnect the secondary air injection (AIR) reaction pump inlet hose from the air cleaner air outlet duct.
- Loosen the 3 air cleaner housing retaining screws (1).
- Remove the air cleaner housing (2).
- Lift the air cleaner element (6) and air outlet duct (3) from the lower air cleaner housing/washer solvent tank assembly (4).
- Remove the air cleaner element (6) from the air outlet duct (3) with a twisting and pulling motion.
- Inspect the entire assembly for dust, debris, or water. Clean or replace as necessary.
Factory Service Tools
Use the Manual With the Right Hardware
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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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