SureFlo Performance Sending Unit for 2004.5-2010 Duramax Fleece Performance

Feed an external lift pump properly

A frame-mounted aftermarket lift pump normally needs a draw straw or a sump drilled into the tank, and both can starve the pump and pull air below about a quarter tank. The SureFlo drops into the stock sending unit location instead, with factory-style quick disconnects for the stock lines and no cutting or drilling.

It draws from and returns to a bucket at its base, with one-way check valves that let fuel in at low levels, so the pump sees fuel instead of air. It's also a good fix for a failed level sender on trucks that never had an in-tank pump, or for running custom lines straight to the tank.

Who it's for

Owners of 2004.5-2010 Duramax pickups running an external lift pump or needing a new sender.

Key specs (per Fleece)

What's included

• SureFlo sending unit with new level electronics and float
• New O-ring or flange seal

Fitment notes

• Fits 2004.5-2010 Chevrolet Silverado / GMC Sierra 2500/3500 LLY/LBZ/LMM Duramax (per Fleece).
• Has no pump of its own; for an in-tank pump, see the Fleece PowerFlo.
• Fleece has tested it with AirDog pumps up to 220 GPH and FASS pumps up to 200 GPH.
• Not compatible with S&B aftermarket tanks; Fleece publishes Titan tank fitment data.
• 2007 fitment covers classic body (LLY/LBZ) and new body (LMM).

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.