2014 Chevy Impala High Pressure Fuel Pump Location: What You Need to Know Before You Repair or Replace It

If you drive a 2014 Chevy Impala and you're trying to figure out where the high pressure fuel pump is located, here's the short answer: the high pressure fuel pump on the 2014 Impala is mounted on the engine itself, not inside the fuel tank. It sits near the top of the engine, driven by the camshaft, and it is a completely separate component from the in-tank electric fuel pump that most people think of when they hear "fuel pump." Understanding this two-pump system is the key to diagnosing the right problem and avoiding an expensive misdiagnosis.

The 2014 Chevy Impala was available with two engine options—a 2.5L four-cylinder (engine code LKW) and a 3.6L V6 (engine code LFX). Both of these engines use gasoline direct injection, which means they rely on two separate fuel pumps working together. The first pump lives inside the gas tank and supplies fuel at lower pressure. The second pump, the high pressure fuel pump, is mounted on the engine and raises that pressure dramatically so the fuel injectors can spray fuel directly into the combustion chamber. If you're looking for the high pressure pump, you won't find it under the rear seat or anywhere near the gas tank. You need to open the hood.

Why the 2014 Impala Has Two Fuel Pumps

Most drivers assume there is only one fuel pump in their car. On older vehicles with port fuel injection, that was largely true. But the 2014 Impala is a direct injection vehicle, and direct injection requires much higher fuel pressure than a traditional system can deliver from the tank alone.

Here is how the two-pump system works:

1. The in-tank electric fuel pump sits inside the gas tank and delivers fuel at low pressure, typically around 40 to 60 PSI, to the engine. This pump is submerged in fuel, which keeps it cool and lubricated.

2. The high pressure fuel pump is mounted on the engine and is mechanically driven by the camshaft. It takes the low pressure fuel from the tank and pressurizes it up to roughly 1,500 to 3,000 PSI for direct injection systems. This extreme pressure is what allows the fuel injector to atomize fuel into a fine mist for efficient combustion.

Because these two pumps serve different roles and are located in completely different places, a failure in one does not necessarily mean the other is bad. This is one of the most common sources of confusion for Impala owners.

Where Exactly Is the High Pressure Fuel Pump Located?

On the 2014 Chevy Impala, the high pressure fuel pump is mounted on the top of the engine. Its exact position depends on which engine you have.

On the 2.5L four-cylinder engine, the high pressure fuel pump is typically located on the rear or side of the cylinder head, driven by a lobe on the camshaft. It is usually covered by a foam or plastic insulator to reduce noise, which can make it harder to spot at first glance.

On the 3.6L V6 engine, the high pressure fuel pump is mounted on the front or side of the engine, also driven by the camshaft. It connects to a metal high pressure fuel line that runs to the fuel rail. The pump itself is a compact metal unit with an electrical connector and two fuel line fittings.

In both cases, you'll need to remove the engine cover to see it clearly. Look for a metal component with a high pressure line attached, sitting near the top of the engine rather than down near the oil pan or transmission.

How to Confirm You're Looking at the Right Part

Before you start any repair, it helps to confirm you've actually found the high pressure fuel pump. Here are a few identifying features:

1. It has a high pressure fuel line—a thick metal line, not a rubber hose, connecting it to the fuel rail.

2. It has an electrical connector for the fuel pressure sensor or control valve.

3. It is bolted to the engine, not the fuel tank or frame rail.

4. It is driven by the camshaft, which means it sits directly against the engine block or cylinder head.

If the part you're looking at is inside or near the gas tank, that's the in-tank electric pump, not the high pressure pump. If it's mounted along the frame rail outside the tank, that would be an external inline pump, which is not factory equipment on a stock 2014 Impala.

Common Symptoms of a Failing High Pressure Fuel Pump

A failing high pressure fuel pump on a 2014 Impala usually produces different symptoms than a failing in-tank pump. Here's what to watch for:

1. Extended cranking before the engine starts—the high pressure pump needs to build pressure quickly, and a weak pump struggles to do that.

2. Rough idle or misfires—inconsistent fuel pressure causes uneven combustion.

3. Loss of power under acceleration—when the engine demands more fuel, a weak high pressure pump can't keep up.

4. Check engine light with fuel pressure codes—common codes include P0087 (fuel rail pressure too low).

5. Fuel smell in the engine bay—a leaking high pressure pump or fitting can cause a noticeable gasoline odor.

6. Stalling or hard starting when the engine is hot—heat can worsen a marginal high pressure pump.

If you notice these symptoms, do not assume the in-tank pump is the problem. A proper diagnosis with a scan tool and a fuel pressure gauge is the only way to know which pump is failing.

How the High Pressure Fuel Pump Fails

High pressure fuel pumps can fail for several reasons:

1. Wear from contaminated fuel—dirt or debris that passes through the low pressure filter can damage the pump's internal components.

2. Internal seal failure—the pump relies on precise internal clearances, and worn seals cause pressure loss.

3. Camshaft drive wear—since the pump is driven by the camshaft, a worn drive lobe or follower can reduce pump output.

4. Electrical faults—the pump's control valve or pressure sensor can fail, triggering a check engine light.

5. Fuel starvation—running the tank very low repeatedly can cause the in-tank pump to overheat and send debris downstream, which eventually damages the high pressure pump.

Diagnosing the Problem Before You Replace Anything

Replacing a high pressure fuel pump is not a cheap job, so proper diagnosis matters. Here is a step-by-step approach:

1. Scan for trouble codes. Use an OBD-II scanner to pull all current and pending codes. Fuel pump related codes such as P0087, P0088, P0191, P0193, and P2635 can point you toward the high pressure side.

2. Check low pressure first. Verify that the in-tank pump is delivering adequate low pressure fuel to the high pressure pump. If low pressure is insufficient, the high pressure pump cannot do its job.

3. Test high pressure with a gauge. A qualified technician can measure actual fuel rail pressure and compare it to the specification.

4. Inspect wiring and connectors. Corroded or damaged connectors at the high pressure pump can cause intermittent faults.

5. Check for fuel leaks. A leaking high pressure line or fitting can cause pressure loss and a dangerous fire hazard.

What to Expect During Replacement

If the high pressure fuel pump does need replacement, here is what the job typically involves on a 2014 Impala:

1. Relieve fuel system pressure before disconnecting any lines.

2. Disconnect the battery to prevent electrical sparks.

3. Remove the engine cover and any components blocking access to the pump.

4. Disconnect the electrical connector and fuel lines from the pump.

5. Remove the mounting bolts and carefully pull the pump out of the engine.

6. Install the new pump with a new seal or gasket, then reconnect everything.

7. Pressurize the system and check for leaks before starting the engine.

This is a moderate to difficult DIY job. If you are not comfortable working with high pressure fuel systems, it is best left to a professional. High pressure fuel can cause serious injury if not handled correctly.

How to Prevent High Pressure Fuel Pump Failure

You can extend the life of your high pressure fuel pump with a few simple habits:

1. Never let your fuel level drop below a quarter tank. The in-tank pump relies on fuel for cooling and lubrication.

2. Replace your fuel filter on schedule. A clogged filter forces both pumps to work harder.

3. Use clean, quality fuel. Contaminated fuel is one of the leading causes of high pressure pump failure.

4. Address check engine lights promptly. Ignoring a fuel pressure code can turn a minor repair into a major one.

5. Follow the factory maintenance schedule for your Impala, including fuel system inspections.

Why Choosing the Right Replacement Pump Matters

Not all fuel pumps are built to the same standard. A low quality replacement pump may fail within months, leaving you stranded and facing the same repair bill again. When it comes to direct injection engines like the one in your 2014 Impala, the fuel pump must meet precise specifications for flow rate, pressure, and durability.

For the in-tank low pressure pump, matching the correct flow rate and pressure to your engine is essential. For the high pressure pump, the internal tolerances are even more critical. Using a pump that does not meet OEM specifications can cause poor performance, check engine lights, and even engine damage.

Recommended: KEMSO Fuel Pumps for Your Chevy Impala

If you need a replacement fuel pump for your 2014 Chevy Impala, we recommend KEMSO. KEMSO builds high performance, OEM replacement fuel pumps that are designed to meet or exceed factory specifications. Every KEMSO fuel pump is backed by a lifetime warranty, which means you buy once and never worry about paying for the same repair twice.

KEMSO offers a wide range of fuel pumps for cars, trucks, motorcycles, jet skis, and ATVs, with a growing catalog that includes options for domestic and import vehicles. Their pumps are engineered for reliability, consistent fuel delivery, and long service life. Whether you need a stock replacement or a high performance upgrade, KEMSO has a pump that fits your application.

Visit KEMSO today at https://www.kemsoracing.com/ to find the right fuel pump for your vehicle. Shop with confidence knowing you're getting a quality part with a lifetime warranty behind it.

Frequently Asked Questions

Q: Is the high pressure fuel pump on a 2014 Impala inside the gas tank?

A: No. The high pressure fuel pump is mounted on the engine and driven by the camshaft. The in-tank pump is a separate low pressure unit.

Q: Can I drive with a failing high pressure fuel pump?

A: It is not recommended. A failing high pressure pump can cause stalling, misfires, and engine damage. Have it diagnosed and repaired as soon as possible.

Q: How much does a high pressure fuel pump cost for a 2014 Impala?

A: Costs vary by source and whether you choose OEM or aftermarket parts. Labor is a significant part of the total because the repair requires engine access and fuel system work.

Q: How long does a high pressure fuel pump last?

A: With proper maintenance and clean fuel, a high pressure fuel pump can last well over 100,000 miles. Running the tank low and skipping fuel filter changes can shorten its life significantly.

Q: Can I replace the high pressure fuel pump myself?

A: It is possible for experienced DIYers, but the job requires relieving fuel pressure, working around the camshaft drive, and handling high pressure fuel lines. If you are not confident, have a professional do it.

Final Thoughts

The high pressure fuel pump on a 2014 Chevy Impala is located on the engine, not in the fuel tank. It is driven by the camshaft and works alongside the in-tank electric pump to deliver fuel at the extreme pressures required by direct injection. Knowing where it is and how it works helps you diagnose problems correctly and avoid replacing the wrong part.

If you need a replacement, choose a pump you can trust. KEMSO offers high performance, OEM replacement fuel pumps with a lifetime warranty. Visit https://www.kemsoracing.com/ to find the right pump for your vehicle and get back on the road with confidence.