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 Chevrolet Avalanche 2500FACTORY OEM SERVICE PROCEDURE

Removal Procedure

Fig 1: View Of MAF/IAT Sensor Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Remove the intake air resonator. Refer to Intake Air Resonator Replacement .
Disconnect the mass air flow/intake air temperature (MAF/IAT) sensor electrical connector (3).

Fig 2: View Of Air Cleaner Housing Cover, Screws & Air Filter Element

Courtesy of GENERAL MOTORS CORP.

Loosen the air cleaner housing cover screws.
Remove the air cleaner housing cover.
Remove the air filter element.
Inspect the air filter element for the following:
- Dust
- Dirt
- Water
Clean or replace the air filter element as required.

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.