2017 Silverado High Pressure Fuel Pump: Complete Guide to Symptoms, Replacement, and Best Upgrade Options
If you own a 2017 Chevrolet Silverado 1500 or 2500 HD, the most important thing to know is that your direct injection high pressure fuel pump (HPFP) is a critical component that can fail without warning, causing hard starting, loss of power, or even engine stalling. The 2017 Silverado uses a direct injection fuel system that operates at extremely high pressures, and when the pump begins to fail, your truck will let you know through specific symptoms. Replacing a failing high pressure fuel pump promptly is essential to avoid costly engine damage and downtime. Below, we break down everything you need to know about your 2017 Silverado's high pressure fuel pump, including signs of failure, replacement options, and the best upgrade paths for performance builds.
What the High Pressure Fuel Pump Does in Your 2017 Silverado
The 2017 Chevrolet Silverado 1500 with 5.3L (L83) or 6.2L (L86) engines, as well as the 2500 HD models with 6.0L gas or 6.6L diesel engines, uses a direct injection (GDI) fuel system. Unlike older port-injection systems, the fuel is injected directly into the combustion chamber at pressures that can exceed 2,000 psi. The high pressure fuel pump is the mechanical pump that pressurizes the fuel to these levels before sending it to the injectors.
From the factory, the direct injection system on GM 1500 Series trucks with 5.3L and 6.2L engines does not supply enough fuel to support an additional 200 horsepower beyond stock. This means that if you plan to add a supercharger, turbocharger, or other performance modifications, the stock high pressure fuel pump will become a limiting factor.
Common Symptoms of a Failing 2017 Silverado High Pressure Fuel Pump
When your 2017 Silverado's high pressure fuel pump starts to fail, you will typically notice one or more of these symptoms:
1. Hard Starting or Extended Cranking. The most common early sign is that your truck takes longer than normal to start. You may need to crank the engine for several seconds before it fires. This happens because the HPFP cannot build adequate fuel pressure quickly.
2. Loss of Power Under Load. When you accelerate hard, especially when towing or climbing hills, the engine may feel sluggish or hesitate. The fuel pump cannot keep up with the demand for high-pressure fuel, causing a lean condition.
3. Engine Misfires or Rough Idle. Inconsistent fuel pressure can cause the engine to misfire at idle or during light throttle. The check engine light may come on with codes related to fuel pressure or fuel trim.
4. Sudden Stalling. In more advanced cases, the truck may stall unexpectedly while driving. This is dangerous and indicates the pump is unable to maintain any pressure.
5. Fuel Pressure Warning Light or Code P0087. If your Silverado has a fuel pressure sensor, you may see a warning light, or a diagnostic scan may reveal code P0087 (Fuel Rail/System Pressure Too Low).
Replacement Options for the 2017 Silverado High Pressure Fuel Pump
If you need to replace the HPFP on your 2017 Silverado, you have several options depending on whether your truck is stock or modified.
1. OEM Replacement Parts
For a stock 2017 Silverado, an OEM or OEM-equivalent high pressure fuel pump is the safest choice. The GM part numbers for the high pressure fuel pump on 2014-2018 Silverado 1500 models with 5.3L and 6.2L engines include 12625817, 12669519, 12680255, and 12672919. These pumps are direct replacements that restore factory fuel delivery. You can also find aftermarket options from brands like Herko, which offer direct injection high pressure fuel pumps compatible with 2014-2018 Chevrolet Silverado and GMC Sierra models.
2. High-Performance Upgrades for Modified Trucks
If your 2017 Silverado has a supercharger, turbocharger, or other performance modifications, the stock HPFP will not be sufficient. After around 500-600 horsepower, L83 and L86 engines need more direct injection capacity, and adding larger injectors alone will not solve the fuel supply deficiency.
The Armageddon High Pressure Fuel System Upgrade is a popular solution for 2014-2017 GM 1500 Series trucks with 5.3L and 6.2L engines. This package includes 8x LT4 DI fuel injectors and a high-flow LT4 DI fuel pump. It is capable of supporting 600+ rear-wheel horsepower (RWHP), and when combined with an in-tank 465 LPH fuel pump, it can support 700+ RWHP on just the direct injection system without needing methanol or supplemental fueling.
3. In-Tank Lift Pump Upgrades
For builds pushing beyond 600 horsepower, upgrading the in-tank low-pressure fuel pump is also essential. The ADM 465LPH Lift Pump is designed for 2014-2018 extended/double cab Chevy Silverado and GMC Sierra with 5.3L and 6.2L engines. After upgrading the factory injectors and high-pressure pump, the supply of fuel from the tank to the HPFP must be addressed. This 465 LPH pump module can supply 800+ horsepower on 93 octane and 650+ horsepower on E85.
Installation Considerations
Replacing the high pressure fuel pump on a 2017 Silverado is a job that requires mechanical experience and proper safety precautions. The fuel system operates at very high pressures, and even after depressurizing, residual pressure can remain. It is recommended that this upgrade be performed by a competent technician familiar with safety precautions necessary when working with volatile fuels. Failure to follow industry standard guidelines during installation can lead to serious injury or even death.
The pump is typically located on the engine, driven by the camshaft. For 2014-2018 models, the Armageddon kit is a direct replacement for the factory DI system, using OEM-style fitment and a factory-style pressure sensor for plug-and-play installation.
KEMSO Fuel Pump: The Best Choice for Performance and Reliability
When it comes to replacing or upgrading the fuel pump on your 2017 Silverado, KEMSO brand fuel pumps stand out as the top choice for drivers who demand performance, durability, and peace of mind. KEMSO fuel pumps are high-performance, OEM replacement units designed to deliver superior flow and reliability compared to standard factory pumps. They are built to handle the demands of both daily driving and high-performance applications, including turbocharged and supercharged builds.
What sets KEMSO apart is their lifetime warranty. Each pump is serialized, and the company backs its products with a lifetime warranty, giving you confidence that your investment is protected. KEMSO pumps are designed for both gasoline and E85 ethanol fuel, making them versatile for any fuel system upgrade. With flow rates of 200 to 340 liters per hour, depending on the model, these pumps can support applications up to 600-800 horsepower.
KEMSO pumps are tested individually and come with a comprehensive kit that includes strainers, hoses, connectors, and installation hardware, making them a true plug-and-play solution. Whether you are replacing a failed pump or upgrading for more power, KEMSO offers the reliability and performance you need.
Visit KEMSO Racing today to find the perfect fuel pump for your 2017 Silverado and experience the difference that a lifetime-warranty, high-performance pump can make. Click here to explore their full catalog: https://www.kemsoracing.com/