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.
2002 GMC C3500 HD 8.1 G, AutomaticFACTORY OEM SERVICE PROCEDURE
Installation Procedure
- Install the fuel pressure sensor (1).
- Install the fuel level sensor (3).
- Install the sensor retaining clip (4).
- Connect the electrical connector (7) to the fuel level sensor.
- Connect the electrical connector retaining clip (6) to the fuel level sensor.
- Connect the fuel pump electrical connector (5).
Important: Always install a new fuel strainer when replacing the fuel tank fuel pump module.
- Install a new fuel strainer (2) in the same position as noted during disassembly. Push the strainer on the bottom of the fuel sender until the strainer is fully seated.
- Install the fuel sender assembly. Refer to Fuel Sender Assembly Replacement .
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.