Fuel Pump Assembly for 1997 1998 1999 2000 Chevy GMC Pickup Truck Compatible with 19177242 E3947M (with 2 Electrical Connectors) FP74757M TOPSCOPE

Vehicle Compatibility (Gasoline Only)

Designed for 1997–2000 Chevy and GMC pickup trucks requiring:

• Replacement for 19177242 / E3947M

• Two electrical connectors configuration

• In-tank fuel pump module applications

If your truck needs the dual-connector setup, this is the correct assembly—not a universal workaround.

Why a Complete Fuel Pump Assembly Matters on GMT400 Trucks

These trucks rely on stable fuel pressure (PSI) and proper signal communication between the pump and sending unit. Replacing only the pump motor often leads to:

• Inaccurate fuel gauge readings

• Lean conditions under load

• Repeat failures from worn internal components

The FP74757M assembly includes:

• High-pressure electric fuel pump

• Fuel level sending unit

• Pre-filter strainer (sock)

• Internal pressure regulation components

• OE-style housing with two electrical connectors

One replacement. One fix. No return trips.

Performance & Drivability Benefits

GMT400 trucks are workhorses, and weak fuel delivery shows up fast—especially when towing, hauling, or accelerating with a load.

Installing a new fuel pump assembly:

• Restores factory fuel pressure

• Improves cold starts and throttle response

• Prevents hesitation and lean misfires

• Stabilizes injector operation

• Fixes inaccurate or erratic fuel gauge behavior

It won’t add horsepower—but it will keep the horsepower you already have.

TOPSCOPE Automotive Components offers a complete line of electronic fuel pumps. TOPSCOPE is your #1 source for quality fuel delivery system.

Our electronic fuel pumps are designed with top of the line components giving our pumps a long life and better performance than any of our competitors. We use OEM quality materials featuring superior metals and improved components. All pumps are 100% tested before being shipped. TOPSCOPE pumps meet or exceed OE specifications in fit, form and function.

TOPSCOPE is very proud of our capabilities to meet the individual needs of our customers. We also excel at developmental projects for the unique needs of our customers.

Safety & Installation Notes

Fuel pumps operate submerged in gasoline for cooling. Aging pumps draw excess current, overheat, and stress wiring—especially in older trucks where connectors are already tired.

Best practices:

• Disconnect the battery before installation

• Relieve fuel system pressure

• Replace the fuel filter after install

• Avoid consistently running the tank below ¼ full

This assembly is vehicle-specific and plug-and-play, using factory mounting points and correct electrical connections. No splicing. No guessing.

Vehicle fitment(FP3962M and FP3947M both fit C1500/C2500/C3500/K1500/K2500/K3500,but FP3962M has w/1 Electrical Connector, Module Code GFT; FP3947M has w/2 Electrical Connectors, Module Codes GAL, GAP, GAV, GFK):

• CHEVROLET K1500 99-98 V8-5.7L
• CHEVROLET K2500 00-98 V8-5.7L Cab and Chassis, Extended Cab Pickup,Standard Cab Pickup
• CHEVROLET K2500 00-98 V8-7.4L Cab and Chassis, Extended Cab Pickup,Standard Cab Pickup
• CHEVROLET K2500 1998 V8-5.0L
• CHEVROLET K3500 00-98 V8-5.7L Cab and Chassis, Crew Cab Pickup, Extended Cab Pickup,Standard Cab Pickup
• CHEVROLET K3500 00-98 V8-7.4L Cab and Chassis, Crew Cab Pickup, Extended Cab Pickup,Standard Cab Pickup
• CHEVROLET TRUCK K1500 PICKUP; 305 (5.0L) 1998
• CHEVROLET TRUCK K2500 PICKUP; 454 (7.4L) 1998
• GMC C1500 98-97 V6-4.3L
• GMC C2500 00-98 V8-5.7L
• GMC C3500 00-98 V8-5.7L
• GMC K1500 98-97 V6-4.3L
• GMC K2500 00-98 V8-7.4L

• GMC K3500 00-98 V8-7.4L not fit 2 door
• GMC TRUCK K15, K1500 PICKUP; 262 (4.3L) 97-98
• GMC TRUCK K15, K1500 PICKUP; 305 (5.0L) 1998
• GMC TRUCK K15, K1500 PICKUP; 350 (5.7L) 1998-1999
• GMC TRUCK K25, K2500 PICKUP; 305 (5.0L) 1998
• GMC TRUCK K25, K2500 PICKUP; 350 (5.7L) 1998-2000
• GMC TRUCK K25, K2500 PICKUP; 454 (7.4L) 2000
• GMC TRUCK K35, K3500 PICKUP; 350 (5.7) 1999
• GMC TRUCK K35, K3500 PICKUP; 454 (7.4L) 1998

Vehicle makes high pitched sound when the engine is first engaged;

Sudden trouble accelerating;

• Always keep enough fuel in the tank for the pump to be submerged in gas;
• Fuel comes through filter to the Tubine Impeller. So if the fuel contains too much impurities, it can block the filter and damage the Tubine Impeller. So please replace the Filter on a regular basis and always use high quality gasoline.

Why Buy from Pro Street Online

At Pro Street Online, we sell parts that solve the problem the first time. The TOPSCOPE FP74757M fuel pump assembly is the right choice for GMT400 owners who want OEM-style reliability without dealership pricing.

If your truck still works hard, your fuel system should too.