2011 Chevy Traverse Fuel Pump Relay Location: A Complete Guide for DIY Owners

The fuel pump relay on a 2011 Chevy Traverse is located in the underhood fuse/relay box on the passenger side of the engine compartment, near the firewall. This is the same location for the 2010 model as well, and the relay is typically found in slot #47 of the underhood fuse block, though you should always confirm by checking the diagram printed on the inside of the fuse box cover. If your Traverse cranks but won't start, or stalls unexpectedly, a faulty fuel pump relay is a common and easy-to-check cause.

Where Exactly Is the Fuel Pump Relay on a 2011 Traverse?

The 2011 Chevrolet Traverse has its main fuse and relay box, known as the underhood fuse block, located in the engine compartment. It sits on the passenger side, close to the battery and the firewall. To access it:

  1. Open the hood and look toward the passenger side, near the back of the engine bay.
  2. Locate the rectangular black plastic fuse box mounted near the battery.
  3. Remove the protective cover by pulling up on the clips. You can use a flathead screwdriver or a trim removal tool to gently pry it off if needed.
  4. Look at the diagram printed on the underside of the cover. This diagram shows the position of every fuse and relay inside the box. The fuel pump relay is labeled and is usually a black or blue rectangular module.

According to the factory fuse box diagram for the 2011 model, the fuel pump relay is assigned to relay position R47 in the underhood fuse block. It is a standard mini-relay, which is easy to pull out by hand once you find it.

What Does the Fuel Pump Relay Look Like?

The fuel pump relay is a small, rectangular, cube-shaped component with four or five metal prongs on the bottom. On a 2011 Chevy Traverse, it is typically black or blue in color. It is not a fuse; it is slightly larger than a standard fuse and has a different shape. The relay is specifically labeled "Fuel Pump" on the top or on the fuse box diagram, making it easy to distinguish from other relays like the horn or cooling fan relays.

How the Fuel Pump Relay Works

The fuel pump relay is a simple but critical electrical switch. When you turn the ignition key to the "ON" position, the relay receives a signal from the engine control module (ECM) and closes the circuit, sending 12 volts of power to the fuel pump located inside the fuel tank. The relay is designed to carry a consistent voltage to the pump. Once the engine is running, the relay stays engaged to keep the pump operating. When you turn the ignition off, the relay opens, cutting power to the pump and stopping fuel flow.

Common Symptoms of a Bad Fuel Pump Relay

If the fuel pump relay fails, the fuel pump will not receive power, and the engine will not get fuel. Here are the most common symptoms to watch for:

  • Engine cranks but won't start: This is the most obvious sign. You turn the key, the starter motor cranks the engine, but it never fires up because no fuel is reaching the cylinders.
  • Engine stalls suddenly: The relay may fail while you are driving, causing the engine to lose power and shut off completely. Sometimes it may restart after a short wait if the relay cools down and works again temporarily, but this is a clear sign of a failing relay.
  • No noise from the fuel pump: When you turn the ignition to the "ON" position (without starting the engine), you should hear a brief humming or whining sound coming from the rear of the vehicle near the fuel tank. This is the fuel pump priming. If you hear nothing, the relay—or the pump itself—may be faulty.
  • Loss of power while driving: The engine may feel sluggish or hesitate under acceleration due to inconsistent fuel delivery caused by a failing relay.

How to Test the Fuel Pump Relay

Before replacing the relay, you can test it with a simple procedure. Here is a step-by-step method that works for most DIYers:

  1. Remove the relay from the fuse box by pulling it straight up.
  2. Visually inspect the prongs for any corrosion, rust, or damage. Clean them with a wire brush if needed.
  3. Use a multimeter set to the ohm (Ω) setting. Connect the multimeter probes to terminals 85 and 86 on the relay. You should see a resistance reading typically between 50 and 200 ohms. If the reading is infinite (OL), the relay coil is broken and the relay is bad.
  4. Apply 12V power to terminals 85 and 86 using jumper wires connected to the vehicle's battery. Then test continuity between terminals 30 and 87. When power is applied, the internal switch should close, and you should hear a "click." If there is no continuity or no click, the relay is faulty.

A quicker test is to swap the relay with an identical one from the fuse box, such as the horn relay (if they are the same part number). If the engine starts after swapping, the original relay was bad.

Other Possible Causes of No Fuel

If the relay tests good but the engine still won't start, the problem may be elsewhere in the fuel system. Before replacing the fuel pump itself, check the following:

  • Fuel pump fuse: Locate the fuse labeled "FSCM" (Fuel System Control Module) or "FUEL" in the underhood fuse box. Check for continuity with a multimeter or simply replace it with a known good fuse of the same amperage.
  • Fuel pump control module: On the 2011 Traverse, the fuel pump control module is located under the rear seat cushion. This module controls the fuel pump relay and can fail independently.
  • Wiring and connectors: Inspect the wiring harness leading to the fuel pump for damage, corrosion, or loose connections. A broken wire or bad ground can mimic a relay failure.
  • Fuel pump itself: If the relay and fuse are good, the internal fuel pump may have failed. On a 2011 Traverse, the fuel pump is located inside the fuel tank and requires dropping the tank or accessing it through a service panel under the rear seat to replace.

KEMSO Fuel Pump: The Reliable Replacement You Need

If you have diagnosed the problem and determined that your fuel pump itself needs replacement, choosing a high-quality part is essential to avoid future breakdowns. KEMSO Fuel Pumps offer a superior solution for your 2011 Chevy Traverse. KEMSO products are designed as high-performance, OEM replacement units, meaning they match the exact specifications of the original pump while often providing improved durability. Every KEMSO fuel pump comes with a lifetime warranty, giving you peace of mind that your investment is protected for as long as you own the vehicle. Whether you need a pump for a car, truck, motorcycle, or ATV, KEMSO has a robust lineup of best-selling fuel pumps designed to fuel your adventure. Visit KEMSO Racing today at https://www.kemsoracing.com/ to find the perfect replacement pump for your needs.

Conclusion

Finding the fuel pump relay on your 2011 Chevy Traverse is straightforward: it is in the underhood fuse box on the passenger side, near the battery, and is labeled on the cover diagram. A faulty relay is a common cause of no-start and stalling issues, and it is easy to test and replace. If the relay is not the problem, check the fuse, the fuel pump control module, and the wiring before moving on to the pump itself. And when it is time to replace the fuel pump, trust KEMSO for a reliable, long-lasting solution backed by a lifetime warranty. For more information and to browse their full product range, visit https://www.kemsoracing.com/.


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