How to test the fuel pump on a Chevy Silverado?

All of the following fuel pressure test gauge kits will help test the fuel pump on your Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL): As I mentioned at the beginning, testing the fuel pump simply involves connecting the fuel pressure test gauge to the fuel system.

What happens if your fuel pump stops working?

A fuel pump will generally fail in one of two ways. It’ll either stop working completely (producing no fuel pressure) and cause an engine no-start problem. Or the fuel pump will begin to fail and function only enough to start the vehicle but the engine will not run optimally.

When do you need to replace the fuel pump?

CASE 3: The fuel pressure was below the indicated fuel pressure specification. This test result lets you know that even though the fuel pump is supplying some fuel it’s not supplying enough to have the engine run optimally. This is an indication that the fuel pump is failing and needs to be replaced.

What should the fuel pressure be on a Chevy Silverado?

If you want to save some bucks on this purchase take a look at my recommendations here: Where To Buy A Fuel Pressure Test Gauge. FUEL PRESSURE SPECIFICATION: The fuel pressure specification for the 1999-2006 4.8L, 5.3L, 6.0L Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL) is 55 to 62 PSI. Flex fuel engines: 48-54 PSI.

What to do if your suburban fuel pump goes out?

There are physical signs that you can feel when your Suburban’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code.

Where is the fuel pressure regulator on a 1999 suburban?

Walk over to the passenger’s side of the truck. Face the engine so that you are looking toward the driver’s side. Peer across the top of your Suburban’s engine. From the top, center of the engine, less than one foot down on each side, you should see two metal tubes.

What are the symptoms of a bad fuel pump?

A clogged fuel filter will have high pressure on its input side and low pressure on its output side. A bad fuel pump will have low pressure on both sides. They are both going to cause the same hesitation at high speed and difficulty starting.

What’s the fuel pressure on a Chevy Silverado?

Ok…So I get 55-58psi with the key on/engine off, for about 2 seconds while the pump is on. as soon as the pump stops it drops do about 52psi. the truck refuses to start. Cranks fine, and seems like its about to start but just dies.

How does the fuel pump work in a GMC?

FUNCTIONS – Suck the fuel from the fuel tank, pressurize it and then deliver it to the fuel supply pipe, and cooperate with the fuel pressure regulator to establish a certain fuel pressure. Guaranteed supply of continuous fuel to the injector

Where is the fuel pump on a Duramax?

On a stock Duramax there is no electric pump in the tank or on the rail — unless you have dual tanks. The Bosch CP3, mechanical pump mounted in the engine valley, pulls the fuel from the tank via vacuum.

Can a GMC Sierra run without a fuel pump?

Without gas your Sierra will not run at all. With that in mind, most of the symptoms of a bad fuel pump revolve around the vehicle stalling out or not running at all. In modern fuel injected vehicles, the fuel pump sits right in the fuel tank and “pushes” the gasoline to the fuel rail (s).

Where does the fuel pump go in a car?

In modern fuel injected vehicles, the fuel pump sits right in the fuel tank and “pushes” the gasoline to the fuel rail (s). It is in the fuel tank because “pushing” fuel to the fuel rail is easier than “pulling” the fuel, which is what an inline pump would do.

Also, the symptoms are almost exactly the same as bad/clogged fuel filter. Here are the most common symptoms of a bad fuel pump in your GMC Sierra: One of the most common signs that a fuel pump is going bad is a whining sound. The whining sound can indicate that the fuel pump is going out before there are any performance based issues.

What’s the best way to replace a fuel pump?

If playback doesn’t begin shortly, try restarting your device. I like fixing things. all kinds of things. I do pretty much everything myself. I like making things.

How to test the fuel pump in a V8?

These are the test steps: 1 Connect your fuel pressure tester to the Schrader valve. 2 Have your helper crank the engine while you observe the needle on the fuel pressure tester gauge. 3 The fuel pressure tester should give you a reading between 55 to 62 PSI.

What does 0 psi fuel pressure test mean?

CASE 2: You got 0 psi fuel pressure. This test result lets you know that the fuel pump is defective and is causing the engine to not start. Before you replace the fuel pump, make sure that the fuel pump relay and fuel pump fuse are supplying power to the fuel pump when the engine is being cranked.

What happens when the fuel pump goes out on a Chevy Silverado?

There are physical signs that you can feel when your Silverado’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

How to remove fuel pressure regulator from Chevy Silverado?

To remove the regulator, firmly hold onto it from both sides and pull it back. It should pop right out. Figure 3. Fuel pressure regulator removed. Use needle nose pliers to remove the O-ring seated inside of the regulator port. Then use the pliers to remove the metal regulator screen.

What to do if your Chevy Silverado is leaking fuel?

Pull on vacuum line located on top of the fuel pressure regulator. Fuel leaking out of the vacuum line is an indicator that the fuel pressure regulator is not functioning. Slightly pry out the regulator clamp with a flat head screwdriver. Use your hand to pull up on the clamp and remove it from the regulator. Figure 2. Pry out the regulator clamp.

What kind of steering pump does a Chevy Silverado use?

When you notice tough steering, squealing when you turn the wheel, or heavy vibrations, an inspection of your Chevrolet Silverado power steering pump is in order. Silverado power steering pumps power closed hydraulic systems that assist your vehicle’s handling.

What are the features of a Chevy Silverado?

Get the off-road capability you need and head off the beaten path with the legendary Z71 Off-Road Package. Features include: You know Silverado has the legendary power to handle heavy loads. But towing isn’t about power alone. Silverado also offers advanced trailering technology that provides confidence for the long haul.

When did the Chevy fuel pump come out?

It started on Chevrolet truck models from 1996 to 2003 model years, but has expanded to other models as the connector and pump assemblies are not aging well. In fact, I have a financially strapped friend with an 04 Silverado that now caries a heavy rubber mallet in the truck.

Where is the fuel pump relay located on a car?

The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump. The fuel pump relay is usually controlled by…

What is the average rating of a fuel pump relay?

Average rating from 198 customers who received a Car is stalling Inspection. The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine.

What are the symptoms of a fuel pump relay problem?

1. Engine stalls One of the first symptoms of an issue with the fuel pump relay is an engine that suddenly stalls. If the fuel pump relay has an issue while the vehicle is operating it will cut off power to the fuel pump, which will cause the engine to stall.

Where is the fuel pump control module located?

It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump. The fuel pump relay is usually controlled by the ignition or Powertrain Control Module , and when switched on, will provide current to the fuel pump so that it may function.

What should the fuel pressure be on a 2001 Chevy Silverado?

Here is how you use it. Please feel free to ask a question or leave a comment. By the way, the normal fuel pressure for a 2001 Silverado is 50~55 PSI. Loading…

What should I do if my fuel pump is low?

The first thing you can do is to check the screen filter. The screen filter protects the fuel pump from dust and debris and can get clogged up pretty quickly. This can hinder the flow of fuel to the fuel pump and into the cylinders. So, it is better to clean the screen filter and replace it with a new one if needed.

Why does my Silverado have a trouble code P0420?

If you get P0420 or P0430 trouble codes with a scanner, it very well may be the catalytic converter causing these symptoms. One of the best indicators of a clogged fuel pump is going to be that the your Silverado is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.

Where do I check for power to fuel pump?

If not all of them check for power at the ECM B fuse. And finally I am assuming you have the single tank and not dual.

Is there any power to the fuel pump?

I have no power to the fuel pump on a 2002 silverado 1500 5.3. Check the grey wire with the key getting switched on. Still no power. , GM MASTER/WORLD CLASS.

Which is the only fuel pump on a stock truck?

The CP3 is the only fuel pump on a stock truck, half of it is the injection pump and the other half actually sucks the fuel all the way from the tank. Are you throwing any codes?

What should fuel pressure be if fuel pump is not activating?

If the fuel pump relay IS NOT activating the fuel pump, the fuel pressure test gauge will register 0 PSI when cranking the engine. If the fuel pump relay is activating the fuel pump, then it’ll register about 56-62 PSI even if the engine does not start. Any fuel pressure below 50 PSI and the engine will NOT start.

How to test a GM 4.3L fuel pump?

More GM 4.3L, 5.0L, and 5.7L Tutorials. It’s very important that you start off your fuel pump relay diagnostic by first testing the fuel pump pressure with a fuel pressure test gauge. If the fuel pump relay IS NOT activating the fuel pump, the fuel pressure test gauge will register 0 PSI when cranking the engine.

What should fuel pressure be on Silverado truck?

Does it stay down near 52, drop further, or does it come back up to 58? If you jumper the fuel pump test lead (labeled “fuel pump prime connector” in Chilton’s wiring diagram and is a red wire coming out of the power distribution box that just dead ends.

How can I check the pressure of my fuel pump?

There are two ways to tap into the fuel line to see how much pressure the fuel pump in producing. One method involves removing the fuel filter and using an adapter, that has a Schrader valve on it, in its place. You then connect your fuel pressure test gauge to this adapter.

What should I do if my fuel pump is not working?

If the system fuel pressure does not respond inspect the regulator vacuum feed line and if okay the fuel pressure regulator has failed (if equipped). The final check will be the load test. This test will determine how the pump performs under load of use.

How to test a suspect fuel pump relay?

1 The easiest way to test a suspect fuel pump relay is to; swap the suspect relay with a good one. 2 You may find another relay in your car with the same configuration as your fuel pump relay. Just make sure the other relay has the same configuration. 3 Remove the suspect relay and install the good relay and check if your engine fires up. …

Where is the fuel pump test gauge located?

As I mentioned at the beginning, testing the fuel pump simply involves connecting the fuel pressure test gauge to the fuel system. The fuel pressure test gauge connects to the Schrader valve located on the fuel injector rail (passenger side of the intake manifold).

What should fuel pressure be when fuel pump relay is activated?

If the fuel pump relay is activating the fuel pump, then it’ll register about 56-62 PSI even if the engine does not start. Any fuel pressure below 50 PSI and the engine will NOT start. If you do see any fuel pressure below 50 PSI, the fuel pump although working, is not creating enough pressure to start the engine and is defective.

What should the fuel pressure test gauge show?

The fuel pressure test gauge should show 56-62 PSI and the engine should start if the previous relay was defective. CASE 1: The fuel pressure test gauge recorded 56-62 PSI after swapping the relay. This test result confirms that the fuel pump relay is defective and needs to be replaced. CASE 2: The fuel pressure test gauge recorded 0 PSI.

How to troubleshoot a GM fuel pump relay?

The following tutorial may be of help: Troubleshooting The Fuel Pump (GM 4.3L, 5.0L, 5.7L) (at: troubleshootmyvehicle.com ). The following links will help you comparison shop for the fuel pump relay:

What kind of engine does a Chevy 6.0 have?

The Chevy 6.0 is a small-block V8 engine that produces 300hp-345hp and 360tq-380tq, depending on the engine version. The 6.0 engine had nine variations over its 20 year life span.

Where can I buy a 2001 Chevy Silverado fuel pump?

Buy 2001 Chevrolet Silverado 1500 Fuel Pump from AutoZone. Notes: Module assembly, Updated design Check Valve. Can be used to replace fuel pump modules built or Without check valve. Module has 2 Electrical Connectors. RPO Code EVA. Evaporative Emission Notes: Module assembly, Without evaporative emissions. Module cover has one electrical connector

How can you tell if your Chevy Silverado fuel pump is going out?

The only way that you are going to know that your Silverado’s fuel pump is going out is that it is no longer providing enough fuel pressure to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading up a hill (or accelerating) the engine may start to feel like it is just running out of steam.

Under the hood of 2007-2009 Chevy and GMC 6.0-liter V8 equipped vehicles, you’ll find the LY6 engine. It has a power output of 363 horsepower and 383 pound-feet of torque and is found in the following vehicles: Active Fuel Management intends to increase fuel economy.

What kind of fuel pump does Chevy 4.8 use?

The 4.8 uses a sequential multi-port fuel injection system, which is jargon for saying that the fuel system uses a fuel pump to send fuel to the injectors which then sprays fuel into the intake ports.

What happens when the fuel pump goes out on a GMC Sierra?

There are physical signs that you can feel when your Sierra’s fuel pump is going out. Before taking anything apart, check to see if your engine’s computer has any trouble codes saved in it. The engine may throw a P0087 trouble code. This trouble code detects that the fuel rail/system pressure is too low.

How to remove a fuel pump from a truck?

Basic instructions on how to tip your bed and remove your fuel pump and sender assembly, replacement of the fuel pump from the sender unit and putting it back into the tank with gasket o-ring and lock ring. I also show video of the bolt hole locations on my short bed frame. Loading…

How to test the fuel pump on a Chevy Silverado?