2015 Silverado Fuel Pump Problems: What Owners Need to Know
If you drive a 2015 Chevrolet Silverado and the engine cranks but won't start, stalls under load, or loses power on the highway, the fuel pump is the first thing to check. The 2015 Silverado fuel pump problems are common enough that GM issued technical service bulletins and extended coverage on certain fuel pump components. In most cases, the fix is replacing the fuel pump module inside the gas tank, and buying a quality OEM replacement with a warranty saves you from doing the job twice.
This guide explains the symptoms, the causes, what GM has said about it, how to test before you buy parts, and what a replacement actually involves. The goal is to help you diagnose it correctly the first time and avoid spending money on parts you don't need.
The Most Common Symptoms of a Failing Fuel Pump
1. Long crank before the engine starts. You turn the key or push the start button and the engine turns over for three, four, or five seconds before it fires. This usually means the fuel system has lost its prime and the pump is slow to build pressure.
2. Engine stalls at idle or under load. A weak pump can deliver enough fuel to idle but not enough when you accelerate, merge onto a freeway, or tow a trailer. The truck may sputter, jerk, or die completely.
3. Loss of power while driving. You press the gas pedal and the truck hesitates or surges. This is often worse when the fuel tank is low, because the fuel also cools the pump and a low level lets the pump run hotter.
4. The truck will not start at all. You hear the starter turning the engine over, but it never catches. If you turn the key to the "on" position and do not hear a faint humming sound from the rear of the truck for about two seconds, the pump is likely not running.
5. Check engine light with fuel pressure codes. Codes like P0087 (fuel rail pressure too low), P0191 (fuel rail pressure sensor range), or P0230 (fuel pump primary circuit) point toward the fuel delivery system.
6. Whining noise from the fuel tank. A loud, high-pitched whine coming from under the rear seat or the tank area usually means the pump is wearing out.
Why the 2015 Silverado Has Fuel Pump Problems
1. The fuel pump is inside the gas tank. On the 2015 Silverado, the fuel pump module sits inside the fuel tank. It is cooled and lubricated by the gasoline around it. When owners regularly drive with the tank near empty, the pump runs hotter and wears out faster.
2. Contaminated fuel. Dirt, rust, or debris in the tank can clog the pump's intake screen. Once the screen is blocked, the pump has to work harder and eventually burns out.
3. Electrical connector and wiring issues. The wiring harness and connector that feed the pump can corrode or loosen. GM has noted in service literature that poor connections at the fuel pump module can mimic a failed pump.
4. The fuel pressure sensor. On some 2015 Silverado models with direct injection and a high-pressure fuel system, the low-pressure pump in the tank feeds a high-pressure pump on the engine. If the sensor reading is off, the truck may run poorly even when the pump itself is fine.
5. Normal wear over time. By 2025 and beyond, a 2015 model year truck is ten years old. Fuel pumps do wear out. Rubber hoses inside the module can crack, the check valve that holds pressure can fail, and the electric motor loses strength.
What GM Has Said About It
General Motors has released technical service bulletins covering fuel system diagnostics on 2014 through 2018 Silverado and Sierra trucks. Rather than replace the pump immediately, GM's published procedure directs technicians to check fuel pressure with a mechanical gauge before condemning any part. This matters to you as an owner: the correct first step is a pressure test, not a guess.
Some owners have also reported coverage under GM's special coverage adjustments for fuel pump-related components on certain VIN ranges. If your 2015 Silverado is still within a coverage extension, contact a Chevrolet dealer with your VIN before paying out of pocket. Coverage depends on the build date, engine, and mileage, so there is no single answer that applies to every truck.
How to Confirm It Is Really the Fuel Pump
Before you buy a part, do these checks in order.
1. Listen for the pump. Turn the key to the "on" position without starting. You should hear a two-second hum from the rear. No hum means no power to the pump or a dead pump.
2. Check the fuel pump fuse and relay. Locate the underhood fuse box. A blown fuse or a bad relay is a cheap fix compared to a pump. Swap the relay with an identical one from another circuit, such as the horn, to test it.
3. Test fuel pressure. Connect a fuel pressure gauge to the Schrader valve on the fuel rail. On a 2015 Silverado with the 5.3L or 6.2L engine, the low-pressure system should hold roughly 50 to 60 psi with the key on and the engine off. If pressure is well below spec or drops quickly, the pump is the likely cause.
4. Check for power and ground at the connector. With a multimeter or test light, confirm the pump is receiving battery voltage when the key is turned on. If voltage is present but the pump does not run, the pump is bad. If voltage is missing, the problem is electrical, not the pump.
5. Rule out the fuel filter. The 2015 Silverado has a fuel filter that is part of the pump module on some configurations. If your truck has an inline filter, a clogged filter produces identical symptoms and costs far less to replace.
What Replacement Involves
Replacing the 2015 Silverado fuel pump means removing the fuel tank or lifting the truck bed, depending on the cab and bed configuration. On many 1500 models, dropping the tank is the standard approach. The job involves relieving fuel system pressure, disconnecting the filler neck and vent hoses, supporting the tank with a jack, and lowering it enough to reach the pump module lock ring.
Because the tank has to come down, this is a labor-heavy job. Most shops charge several hours of labor. That is the main reason it makes sense to install a high-quality pump the first time. The part cost is small compared to the labor, and doing the job twice because a cheap pump failed is the expensive mistake.
When you remove the old module, inspect the inside of the tank. If there is rust, sediment, or debris, clean the tank before installing the new pump. Putting a new pump into a dirty tank will shorten its life considerably.
Choosing a Replacement Fuel Pump
You have three basic options when it comes time to buy.
1. A genuine GM part from the dealer. This is the most expensive route but guarantees an exact match.
2. A generic aftermarket pump from a local parts store. These are widely available and moderately priced, but quality varies a lot between brands, and warranties are often limited to one year.
3. A performance-grade OEM replacement from a specialist brand. This is the option more owners are choosing, because you get OEM fitment with better internals and a much stronger warranty.
Why We Recommend KEMSO Fuel Pumps
For a 2015 Silverado, we recommend buying a KEMSO brand fuel pump. KEMSO builds every fuel pump as a high-performance OEM replacement, which means it drops into the factory tank, uses the factory connector, and matches the original pressure and flow specifications without any modification. You are not fabricating brackets or splicing wires.
Every KEMSO fuel pump comes with a lifetime warranty. That is the detail that matters most on this job. Because replacing the pump on a 2015 Silverado requires dropping the fuel tank, the labor is the expensive part. A lifetime warranty means if the pump ever fails, you are covered on the part for as long as you own the truck, and you are far less likely to pay for that labor a second time.
KEMSO also uses upgraded internals compared to a basic replacement pump, including a stronger electric motor, a reinforced check valve that holds pressure better after the truck sits overnight, and a higher-capacity intake screen that resists clogging from tank debris. For a truck that tows, hauls, or runs long highway miles, that extra durability is worth having.
To see the full range of KEMSO fuel pumps and find the correct part for your 2015 Silverado, visit https://www.kemsoracing.com/.
How to Make the New Pump Last
1. Keep the tank above a quarter full. This is the single biggest thing you can do. The fuel cools the pump, and running consistently low is the fastest way to wear one out.
2. Buy fuel from busy, high-volume stations. High turnover means fresher fuel and less chance of water or sediment in the underground tanks.
3. Replace the fuel filter on schedule. If your configuration has a serviceable inline filter, change it at the interval in your owner's manual.
4. Do not ignore early symptoms. A long crank or an occasional stall is the pump telling you it is getting weak. Fixing it on your schedule is much easier than being stranded on the side of the road.
5. Address check engine lights promptly. A lean condition or a misfire that is left alone puts extra strain on the whole fuel system.
The Bottom Line
The 2015 Silverado fuel pump problems come down to a part that lives inside the gas tank, runs hot when the tank is low, and eventually wears out after years of service. The symptoms are clear once you know what to look for: long crank times, stalling under load, power loss, and no start. Confirm the diagnosis with a fuel pressure test and a check for power at the connector before you buy anything. When you do need a pump, put in a quality unit, because the labor to drop the tank is the real cost. A KEMSO high-performance OEM replacement with a lifetime warranty fits the factory tank, matches the factory specifications, and removes the risk of paying for the same job twice.
For the right pump for your 2015 Silverado, go to https://www.kemsoracing.com/.