2017 GMC Sierra 1500 Fuel Pump: Complete Guide to Symptoms, Replacement, and Cost

If you own a 2017 GMC Sierra 1500 and are experiencing hard starting, loss of power, or engine stalling, the fuel pump is very likely the problem. Replacing the fuel pump on a 2017 GMC Sierra 1500 is a major repair that typically costs between $600 and $1,200 at a professional shop, but doing it yourself can reduce the cost to under $200 for parts alone. The fuel pump is part of an in-tank fuel pump module, and the replacement process involves either lowering the fuel tank or removing the truck bed to access the module. This guide covers everything you need to know about diagnosing a failing fuel pump, choosing the right replacement part, and completing the replacement yourself.

How the Fuel Pump Works on Your 2017 GMC Sierra 1500

Your 2017 GMC Sierra 1500 uses an in-tank electric fuel pump that is part of a complete fuel pump module assembly. This module includes the electric pump, the fuel level sending unit, the float, the strainer, and internal hoses, all pre-assembled in one unit that sits inside the fuel tank. The pump draws fuel from the tank and delivers it to the engine at the correct pressure. When the pump fails, the engine does not receive enough fuel, which can cause a range of performance problems.

Symptoms of a Failing Fuel Pump on a 2017 GMC Sierra 1500

Fuel pump failure rarely happens without warning. Most of the time, your truck will show clear symptoms before the pump completely fails. Recognizing these signs early can save you from being stranded on the road and prevent damage to other components.

1. Hard Starting or No Start
The most common symptom is difficulty starting the engine. If the fuel pump is weak, it cannot build enough pressure in the fuel lines to start the engine quickly. You may need to crank the engine for several seconds before it fires up. In severe cases, the engine will not start at all.

2. Engine Stalling
A failing fuel pump can cause the engine to stall unexpectedly, especially when you are driving at low speeds or idling. This happens because the pump cannot maintain consistent fuel pressure. Stalling while driving is dangerous, especially in traffic or on highways.

3. Loss of Power Under Load
If your Sierra 1500 feels sluggish or lacks power when you are accelerating, climbing a hill, or towing a load, the fuel pump may not be delivering enough fuel to meet the engine's demand. This symptom is often noticed first during heavy acceleration.

4. Sputtering at High Speeds
You may notice the engine sputtering or hesitating when you drive at highway speeds. This happens because the pump cannot keep up with the fuel flow required at higher RPMs.

5. Whining Noise from the Fuel Tank
A healthy fuel pump makes a quiet humming sound when it is running. If you hear a loud whining or buzzing noise coming from the rear of the truck near the fuel tank, the pump is likely wearing out. A whine indicates internal wear and is a sign that failure is approaching.

6. Check Engine Light
Many modern vehicles, including the 2017 GMC Sierra 1500, will trigger the check engine light if fuel pressure is irregular. The diagnostic trouble code (DTC) will often be related to fuel system pressure or fuel trim issues.

Diagnosing a Fuel Pump Problem on Your 2017 GMC Sierra 1500

Before replacing the fuel pump, it is important to confirm that the pump is actually the problem. Several other issues can mimic fuel pump failure, including a clogged fuel filter, a faulty fuel pump relay, or a bad fuel pressure regulator.

Listen for the Prime Sound
Turn the ignition key to the "on" position without starting the engine. You should hear a brief humming sound from the rear of the vehicle. This is the fuel pump priming the system. If you do not hear anything, the pump may not be receiving power, or the pump itself may be dead.

Check the Fuel Pump Relay and Fuse
The fuel pump relay is located in the underhood fuse box on your Sierra 1500. If the relay fails, the pump receives no power. You can swap the fuel pump relay with a similar relay (like the horn relay) to test it. If the pump starts working, the relay was the problem.

Perform a Fuel Pressure Test
A mechanic can connect a fuel pressure gauge to the fuel rail on the engine to measure the pressure. On a 2017 GMC Sierra 1500, fuel pressure specifications vary by engine, but generally, the pressure should be within the manufacturer's specified range. If the pressure is below specifications, the pump is likely failing.

Replacement Cost for a 2017 GMC Sierra 1500 Fuel Pump

The cost to replace a fuel pump on a 2017 GMC Sierra 1500 can vary significantly depending on whether you do it yourself or hire a professional.

Professional Repair Cost
If you take your truck to a shop, expect to pay between $600 and $1,200 for a complete fuel pump replacement. This includes parts and labor. Independent shops typically charge $350 to $850, while dealerships range from $650 to $1,200. Labor time is usually 3 to 6 hours. The fuel pump module itself costs between $140 and $360 depending on the brand and whether you buy just the pump or a complete assembly. Labor is the biggest expense because the fuel tank must be lowered to access the pump.

DIY Replacement Cost
If you replace the pump yourself, the cost is much lower. A high-quality aftermarket fuel pump module for the 2017 GMC Sierra 1500 typically costs between $80 and $150. You will also need basic tools, safety equipment, and possibly a new fuel filter. The total DIY cost is usually under $200.

Why You Should Replace the Fuel Pump Module, Not Just the Pump

The 2017 GMC Sierra 1500 uses a fuel pump module installed inside the fuel tank. It is strongly recommended to replace the entire module rather than just the pump. Here is why:

Simplicity: The module is a single unit that drops in, making installation straightforward.

Reliability: The strainer, sending unit, and internal parts wear out over time. Replacing only the pump may leave you with a failing sending unit later, which would require dropping the tank again.

Cost-Effective: The additional cost of the module is small compared to the labor required to drop the tank again.

Recommended Brand: KEMSO Fuel Pump for Your 2017 GMC Sierra 1500

When it comes to choosing a reliable fuel pump for your 2017 GMC Sierra 1500, KEMSO offers high-performance OEM replacement fuel pumps that stand out in the market. KEMSO fuel pumps are engineered to meet or exceed original equipment specifications, ensuring a perfect fit and reliable performance for your truck.

High Performance. KEMSO fuel pumps are designed to deliver consistent fuel pressure and flow, matching the exact requirements of your 2017 GMC Sierra 1500's engine. Whether you have the 4.3L V6, 5.3L V8, or 6.2L V8, a KEMSO pump will provide the fuel delivery your engine needs for smooth operation and maximum power.

OEM Replacement Quality. Every KEMSO fuel pump is built as a direct OEM replacement, meaning it matches the original factory specifications for fit, function, and durability. You do not need to modify anything to install it. It simply replaces your old, failing pump with new, reliable components.

Lifetime Warranty. KEMSO backs every fuel pump with a lifetime warranty, giving you complete peace of mind. If your KEMSO fuel pump ever fails due to defects in materials or workmanship, it will be replaced at no cost to you. This level of warranty protection is rare in the aftermarket fuel pump industry and demonstrates KEMSO's confidence in their product quality.

Complete Fuel Pump Modules. KEMSO offers complete fuel pump module assemblies that include the pump, sending unit, float, and strainer. This all-in-one solution simplifies your replacement job and ensures every component is new and working properly.

To find the right KEMSO fuel pump for your 2017 GMC Sierra 1500, visit their website and browse their selection. KEMSO provides detailed compatibility information to help you choose the correct part for your specific engine and model year. Visit KEMSO Racing at: https://www.kemsoracing.com/

Step-by-Step DIY Replacement Guide for a 2017 GMC Sierra 1500 Fuel Pump

Replacing the fuel pump on a 2017 GMC Sierra 1500 is a job that requires mechanical skill and attention to detail. Follow these steps carefully.

Safety Precautions:

  • Work in a well-ventilated area. Gasoline fumes are highly flammable.
  • Keep a fire extinguisher nearby, rated for chemical and fuel fires.
  • No smoking or open flames.
  • Do not use any tools that create sparks near the fuel tank.
  • Wear safety goggles and gloves. Gasoline can irritate your skin and eyes.
  • Disconnect the battery negative terminal before proceeding to prevent electrical sparks.

Tools You Will Need:

  • Floor jack and jack stands
  • Wood block (to support the fuel tank)
  • Screwdrivers and pliers
  • Ratchet set and sockets (10mm, 13mm, 15mm)
  • Fuel line disconnect tool (for quick-connect fittings)
  • Fuel pump lock ring tool (specialty)
  • Penetrating oil (for rusted bolts)
  • New fuel pump module (KEMSO recommended)
  • New fuel filter (recommended to replace at the same time)

Step 1: Relieve Fuel System Pressure
Locate the fuel pump relay in the underhood fuse box and remove it. Start the engine and let it run until it stalls. This relieves pressure in the fuel lines. Crank the engine a few more times to ensure all pressure is gone. Reinstall the relay after the engine is off.

Step 2: Disconnect the Battery
Use a 10mm socket to loosen the negative battery cable clamp. Move the cable away from the battery so it cannot spring back and touch the terminal.

Step 3: Raise and Support the Truck
Use a floor jack to lift the rear of the truck. Place jack stands under solid frame points. Lower the truck gently onto the jack stands. Give the truck a light shake to confirm it is stable. Never work under only a jack.

Step 4: Support the Fuel Tank
Place a transmission jack or floor jack under the center of the fuel tank. Put a wood block between the jack and tank to spread the load. Raise the jack just enough to support the tank, but do not lift the truck.

Step 5: Remove the Fuel Tank Straps
Use a 13mm socket to remove the bolts holding the fuel tank straps. Lower the tank slightly, just enough to access the top of the fuel pump module.

Step 6: Disconnect the Fuel Lines and Electrical Connector
Use a fuel line disconnect tool to release the spring-style fittings on the fuel lines. Clean any dirt around the connections before disconnecting. Disconnect the electrical connector from the top of the fuel pump module.

Step 7: Remove the Fuel Pump Module
Use a fuel pump lock ring tool to turn the large retaining ring that holds the fuel pump module in the tank. Carefully lift the module out of the tank. Be careful not to damage the float or strainer. The module may have some fuel in it, so tilt it to drain excess fuel back into the tank.

Step 8: Install the New Fuel Pump Module
Transfer the new O-ring gasket to the tank opening. Place the new KEMSO fuel pump module into the tank, aligning the marks on the module and tank. Make sure the float arm is positioned correctly. Tighten the lock ring securely. Reconnect the fuel lines and electrical connector.

Step 9: Reinstall the Fuel Tank
Raise the fuel tank back into position and secure the tank straps. Tighten the strap bolts to the manufacturer's specifications. Reconnect any hoses or lines that were disconnected.

Step 10: Test the System
Reconnect the battery. Turn the ignition key to the "ON" position several times for 10 seconds each to prime the pump. Check for fuel leaks at all connections. Start the engine and let it idle. Verify fuel pressure with a gauge if possible. The engine may run rough initially as air is purged from the fuel lines.

Common Fuel System Issues on the 2017 GMC Sierra 1500

Beyond pump failure, several other issues can mimic fuel pump problems. Before replacing the pump, check these common culprits:

Clogged fuel filter. The fuel filter should be replaced every 30,000 to 50,000 miles. A clogged filter restricts fuel flow and causes symptoms similar to a weak pump. Start with a filter replacement before condemning the pump.

Faulty fuel pump relay. The relay is located in the power distribution box under the hood. If the relay fails, the pump receives no power. This is an easy and cheap fix.

Bad fuel pump driver module. Some 2017 GMC Sierra 1500 models use a fuel pump driver module that controls the pump speed. If this module fails, the pump may not run at all. This module is usually located near the spare tire or frame rail.

How to Extend the Life of Your New Fuel Pump

Once you have replaced your fuel pump, you can take steps to make it last longer. Keeping your tank at least a quarter full at all times prevents the pump from overheating and extends its life. Running the tank low frequently can cause the pump to overheat and fail prematurely. Using high-quality fuel from reputable stations helps prevent contamination that can damage the pump's internal components. Replacing the fuel filter regularly also helps protect the pump by keeping debris out of the system.

Final Thoughts on Your 2017 GMC Sierra 1500 Fuel Pump Replacement

A failing fuel pump is a serious issue that can leave you stranded and cause additional damage to your truck. Recognizing the symptoms early and replacing the pump promptly is the best way to avoid costly repairs. When you choose a KEMSO fuel pump, you are getting a high-quality, OEM replacement part that is built to last. With a lifetime warranty, USA-based support, and direct fit installation, KEMSO provides the reliability and peace of mind that every truck owner needs.

For more information and to find the correct KEMSO fuel pump for your 2017 GMC Sierra 1500, visit: https://www.kemsoracing.com/


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