Fuel Gas Pump & Sending Unit Module For 2004-2007 Classic Sierra Silverado Truck

If your 2004-2007 Chevy Silverado Classic or GMC Sierra Classic is sputtering at highway speed, refusing to start on cold mornings, or showing a fuel gauge that bounces between empty and full, a failing in-tank fuel pump sending unit module is almost certainly the cause. This Mankee direct-fit replacement module restores reliable fuel delivery and accurate gauge readings in a single bolt-in job — no dealership appointment required. This module is engineered specifically for full-size 2004, 2005, 2006, and 2007 Chevy Silverado Classic and GMC Sierra Classic pickups riding on the GMT800 platform. It is designed to replace the original in-tank assembly on Silverado 1500 Classic and Sierra 1500 Classic half-ton trucks. Cab configuration — regular cab, extended cab, or crew cab — can affect tank size and internal dimensions, so always verify your truck's VIN and confirm your fuel tank capacity before placing your order. If you are unsure about fitment, reference your owner's manual or reach out to our customer support team for a fast confirmation. Fitment is not guaranteed for GMT800 trucks equipped with auxiliary or midship tanks without additional verification. • Direct OEM-style replacement engineered for 2004-2007 Silverado Classic and Sierra Classic — no modifications needed • Integrates the fuel pump, fuel level sending unit, and reservoir strainer into one ready-to-install assembly • Restores accurate fuel gauge readings by replacing the worn float arm and resistor strip that cause erratic or dead-gauge behavior • Eliminates hard starts, engine stalling, and fuel delivery hesitation caused by a degraded or clogged in-tank pump • Plug-and-play electrical connector is matched to the factory GMT800 harness — zero splicing, zero rewiring • Pre-attached inlet strainer protects the new pump from tank debris starting at the moment of installation • Voltage: 12V DC, compatible with standard GMT800 electrical architecture • Flow rate: engineered to match OEM fuel delivery requirements for the LS-based V8 and Vortec V6 engines in these trucks • Sending unit resistance range: matched to factory GM fuel gauge cluster specifications • Float arm: full-travel design covering empty-to-full sweep without dropout • Inlet strainer: sock-style pre-filter rated for standard gasoline and ethanol-blend E10/E85-adjacent fuels common in the US market • Operating pressure: calibrated to meet factory fuel rail pressure specs for GMT800 applications • Electrical connector: OEM-match keyed plug, weatherproof construction • Module diameter: designed to seat correctly in the factory in-tank lock ring without adapter rings The Mankee fuel pump sending unit module is constructed to withstand the demanding environment inside a steel fuel tank on a working pickup. The pump housing uses fuel-resistant polymer construction that resists degradation from ethanol-blended gasoline, a critical factor for US market trucks that frequently run E10 blends. The float arm is manufactured from corrosion-resistant material to prevent the swelling and sticking that kills OEM plastic floats over time. Internal pump components are wound and sealed to handle the constant heat cycling that occurs in an in-tank design — particularly important for Silverado and Sierra owners in hot climates like Texas, Arizona, and Florida where fuel temperatures rise significantly. The resistor strip assembly is precision-calibrated to the GMC and Chevy fuel gauge cluster so you get accurate, stable readings from the moment you turn the key. Every component in this module is designed to perform at the quality level you expect from a fuel system part, without the inflated cost of dealer-sourced hardware. Replacing the fuel pump sending unit module on a 2004-2007 Silverado Classic or Sierra Classic is a straightforward job for a DIY mechanic with basic hand tools and a few hours on a weekend. Start by relieving fuel system pressure — locate the fuel pump fuse or relay in the underhood fuse box, run the engine until it stalls, then crank it once more to bleed residual pressure. Disconnect the negative battery terminal before touching anything in the fuel system. Clean the area around the fuel tank access opening to prevent debris from entering the tank. Depending on your cab and tank configuration, you may access the module from a service panel under the bed or by lowering the tank slightly. Disconnect the factory electrical harness connector — it will unplug cleanly with this direct-fit module. Use a GM lock ring spanner or a brass punch and hammer to rotate the lock ring counterclockwise and remove the old module carefully, noting the orientation of the fuel return line and feed line before pulling the assembly free. Install the new Mankee module by aligning the orientation arrow or notch with the tank mark, then seat and tighten the lock ring clockwise to factory spec (typically 40-50 ft-lbs). Reconnect the fuel lines and electrical connector, reinstall the fuse, and cycle the ignition key on and off three times without cranking to prime the new pump before starting. Check for leaks at the lock ring and fuel line connections before driving. • 1x Mankee fuel pump sending unit module (pump, sending unit, and strainer integrated) • Pre-attached inlet strainer sock • Matched OEM-style electrical connector (no adapter required) At Expedite, we stock OEM-grade replacement parts for working trucks — the Silverados, Sierra Classics, and GMT800 pickups that need to start every morning and run every mile. We cut out the dealership markup and the guesswork by sourcing direct-fit parts verified for your specific application. Our team knows these platforms, and our customer support is staffed by people who can talk fitment, installation, and specs — not just read from a script. Don't let a failing fuel pump keep your GMT800 Silverado Classic or Sierra Classic sidelined. This Mankee direct-fit fuel pump sending unit module ships fast, installs clean, and delivers the reliable fuel pressure your truck needs. Add it to your cart today and get your workhorse back on the road.