E3563M Electric Fuel Pump Module Assembly For S10 2002-2003 (4.3L V6);Sonoma 2002-2003 (4.3L V6) Engine 4.3L/V6

E3563M Fuel Pump Module for 2002–2003 Chevrolet S10 and GMC Sonoma 4.3L

Extended cranking, intermittent no-start, low fuel pressure, hesitation under load, stalling, or an inaccurate fuel-gauge reading can involve the in-tank module. This BDFHYK E3563M electric fuel pump module assembly is an aftermarket replacement for listed 2002–2003 Chevrolet S10 and GMC Sonoma pickups with the 4.3L V6 engine and the applicable K53 fuel-sender configuration. Confirm the RPO code, tank design, connector, module height, sender layout, and OE number before installation.

Confirm E3563M S10 and Sonoma Fitment

2002–2003 Chevrolet S10 4.3L V6

The listed Chevrolet application is the 2002–2003 S10 pickup with the 4.3L V6 engine where the original module and vehicle RPO configuration match E3563M.

2002–2003 GMC Sonoma 4.3L V6

The listed GMC application is the 2002–2003 Sonoma pickup with the 4.3L V6 engine. Verify the service-parts identification label and confirm the K53 fuel-sender system where required.

RPO K53 Verification

RPO K53 identifies the applicable robust fuel-sender configuration in the referenced application data. Check the RPO label, VIN-based catalog, removed module, tank opening, connector, and sender geometry. Do not substitute this module for a 2.2L L4 application.

E3563M OE and Interchange Number Check

Listed Cross-Reference Numbers

E3563M, FG0123, MU1773, P76440M, 19179493, 953-0036, TU449, 67421, MU1029, P74902M, 25338726, and P1552M.

Match the Module to the Exact Tank

Compare the flange, connector, line fittings, overall height, reservoir, pickup, strainer, sender, float arm, seal, and lock-ring engagement with the removed assembly. The 4.3L engine and model year alone do not confirm the tank and sender configuration.

Check the 4.3L Fuel System Before Replacement

Fuel Pressure and Electrical Diagnosis

• Measure fuel pressure during key-on, cranking, idle, and load
• Check pump voltage, ground, relay, fuse, wiring, connector terminals, and control command
• Inspect the fuel filter, lines, pressure-control components, injectors, and tank venting
• Test the sender and gauge circuit separately when the fuel-level reading is inaccurate

Inspect the Tank for Debris and Water

Rust, sediment, water, degraded fuel, or debris can restrict the pickup and damage the replacement pump. Clean the tank and correct the contamination source before installation.

S10 and Sonoma Installation Notes

Confirm RPO and Module Geometry Before Removal

Record the RPO information and original module number before opening the tank. Relieve fuel pressure, disconnect the battery, support the vehicle and tank correctly, and clean the tank opening before removal.

Prime, Leak-Test, and Confirm Gauge Operation

Use the correct seal and confirm full lock-ring engagement. After installation, prime the system, verify fuel pressure, inspect every connection and the tank seal for leaks, confirm gauge operation, and recheck the electrical circuit.

Before Ordering the E3563M Fuel Pump Assembly

4.3L and RPO K53 Checklist

• Confirm a 2002–2003 S10 or Sonoma pickup with the 4.3L V6 engine
• Verify RPO K53 or the exact applicable sender configuration
• Do not substitute this module for a 2.2L application
• Match E3563M or the applicable OE/interchange number
• Compare the tank opening, connector, line fittings, module height, sender, and float arm
• Confirm the seal, lock ring, and installation hardware shown with the product

This is a BDFHYK aftermarket replacement fuel pump module assembly, not a Chevrolet, GMC, or GM factory OEM component.