What to do if your Chevy Express fuel pump goes out?

There are physical signs that you can feel when your Express’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.

Are there any problems with the Chevy 4.8L Vortec?

The two engines tend to have similar problems, but the 4.8 Vortec comes in at a higher reliability rating on our scale due to its lack of AFM, which is known to cause problems on just about every engine it touches. 1. Intake Knock Sensor – 4.8L Vortec

Is there an engine misfire code on a GM 4.8L?

Engine Misfire or Rough Engine Idle on GM 4.8L, 5.3L, 6.0L is becoming; more common and getting harder to diagnose. Because, GM V8 engines are very prone to a rough idle and engine misfire when cold. The check engine light may also come on, with codes P0300, P0171 and PO174.

Why is my GM 4.8l engine running too lean?

The engine may be running too lean, due to a leaking intake manifold. Too lean means too much air and not enough fuel; according to the power control module (PCM) calculation. When the engine is cold, not all sensors function. As the engine warms up the oxygen sensors report the lean condition.

Is there a 2008 Chevy Express Cargo Van?

As a traditional American full-size van, the 2008 Chevrolet Express Cargo (and its GMC Savana twin) is a capable companion for working men and women across the country.

What kind of engine does Chevy Express have?

There’s a new steering wheel, switchgear, instrument cluster and materials. The light-duty Chevrolet Express 1500 cargo van comes standard with a 4.3-liter V6 that produces 195 horsepower and 260 pound-feet of torque. Standard on all-wheel-drive 1500s and optional on rear-wheel models is a 5.3-liter V8 that makes 301 hp and 325 lb-ft of torque.

What was the difference between 2003 and 2003 Chevrolet Express?

A number of important under-the-skin changes took place for 2003, including a wider selection of V8 engines, the first-time availability of all-wheel drive, upgraded brakes, a stronger frame and various interior improvements — all of which went a long way toward making the Express safer and more capable than ever before.

Where is the connector on a Chevy fuel pump?

When you get the Delco replacement parts it comes with a new connector on the fuel pump side. The problem is the connector on the vehicle side of the harness. In the online Chevrolet repair manual I use, a Tech Tip states, the connector should be replaced with the fuel pump assembly.

What do I need to replace my fuel pump?

This factory replacement unit also includes the fuel level gauge sender, hanger assembly and tank filter sometimes called the sock. Some aftermarket replacement pumps just include the motor. This means you replace the motor and transfer the used fuel pump sock, fuel sending unit, and hanger assembly.

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.

What happens if your Chevy Express fuel pump goes bad?

One of the worst problems that can happen to a vehicle is abad fuel pump. If your Chevy Express’s fuel pump goes bad, no fuel (or not enough fuel depending on whether or not it’s out all the way) can enter the engine. Without gas your Express will not run at all.

What are the symptoms of a bad fuel pump?

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 Chevy Express: 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.

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.

How can I tell if my fuel pump is bad?

Testing your Express’s fuel pressure on each side of the pump would be the best way to diagnose this problem. A priming fuel pump sounds like a high-pitched whine for a few seconds and can be heard with a sharp engine right after the ignition key is turned, but before the starter is engaged.

What kind of fuel pump does a Chevy Silverado need?

It turned out the pump I put in was for a 96 C1500, which has a throttle body system and the pump only produced 20-30psi. The Fuel injection in the Silverado needs 55-65psi. Be very careful you didn’t put the wrong fuel pump in!!

Why is my Check Engine light on after installing fuel injection?

Most of the problems encountered while installing your fuel injection system or after a time of operation are very simple. If your check engine light is on you more than likely have a hard fault meaning something is grounded out, unplugged, operating out of range or has gone bad.

Where is the voltage regulator on a Chevy truck?

Beginning around 1950, some vehicles have a small voltage regulator behind the dash that supplies a stable voltage supply for the instruments – something less than the battery voltage of six (or 12) volts. This isolates the instruments from the effects of varying battery and generator voltage.

What to do if your fuel gauge is full?

If you DO have 12 volts to the fuel gauge, the next step is to remove the fuel sending unit wire, and, with the ignition key “on”, ground the sender wire to a good chassis ground. The fuel gauge should immediately go to empty. Removing the sending unit wire from the chassis ground the fuel gauge should go directly to “full”.

What causes a bad gas gauge on a Chevy truck?

A poor ground or loose connection to a gas gauge is just as likely to cause problems as loose or dirty battery cables assuredly will with your starting system.

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.

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?