Fuel Pump Module Assembly E3953m For Chevrolet Blazer/Gmc Jimmy/Oldsmobile Bravada V6 4.3l 1997 1998 Engine 4.3l/V6

Extended cranking, low measured fuel pressure, hesitation under load, intermittent stalling, pressure that drops rapidly after shutdown, or an inaccurate fuel gauge can indicate an in-tank module fault after the fuse, relay, voltage supply, ground, wiring, and fuel lines have been tested. This E3953M replacement module is intended for specified 1997–1998 Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada 4.3L V6 applications. Confirm the four-door body, steel-tank requirement where applicable, OE number, connector count, pressure-sensor arrangement, fuel ports, flange, module height, and float-arm geometry before ordering.

Fuel Pump Module Fitment for S/T Utility Models

Verified coverage includes selected 1997 four-door Blazer and Jimmy models, selected 1998 four-door Blazer and Jimmy models with the matching steel tank, and selected 1997–1998 Bravada 4.3L applications. Two-door bodies, different tank materials, and assemblies with different electrical or pressure-sensor configurations require separate verification.

Fitment Verification

• Confirm a specified 1997–1998 Blazer, Jimmy, or Bravada with the 4.3L V6.
• Verify the four-door body and the matching steel fuel tank for applications that require it.
• Match E3953M, MU1772, MU112, FG0071, P74789M, SP459M, 19177257, 25178731, or 25344814.
• Compare the connector count, pressure-sensor arrangement, fuel ports, flange, reservoir, module height, and float arm.

Module Functions and Service Components

• Electric in-tank pump supplies fuel to the engine-side delivery system.
• Fuel-level sender and float arm report tank level to the instrument cluster.
• Catalog data lists approximately 40 ohms at empty and 250 ohms at full for the matching sender.
• A tank seal and service wiring harness are listed with common configurations; pressure-sensor and connector listings conflict, so the actual module and package must be matched.

Symptoms and Diagnostic Checks

Measure running and residual fuel pressure before replacing the module. Test voltage and ground under load, inspect the fuse and relay, and check the wiring, fuel lines, sender circuit, regulator/check-valve behavior, and tank-pressure sensor when equipped. A body- or tank-style mismatch, restricted filter or line, injector leak, wiring fault, tank contamination, or engine-management problem can create similar symptoms.

Installation Notes

Relieve fuel-system pressure, disconnect the battery, and support the tank safely. Clean the tank and sealing surface, install the correct new seal, complete any approved connector or harness service, and keep the float arm clear. Prime the system, inspect the flange and lines for leaks, measure running and residual pressure, scan the pressure-sensor circuit when present, and confirm normal gauge operation.