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 Fuel & EVAP Lines At Fuel Tank Module (Front Tank)

Courtesy of GENERAL MOTORS CORP.

Remove the front fuel tank. Refer to Fuel Tank Replacement (Front Tank) or Fuel Tank Replacement (Rear Tank) .
Disconnect the fuel and evaporative emission (EVAP) lines from the fuel tank module. Refer to Quick Connect Fitting(s) Service (Plastic Collar) .

Fig 2: Rotating Lock Ring Using J 45722 (Front Tank)

Courtesy of GENERAL MOTORS CORP.

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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