Ameer Randolph
Replacing the fuel pump on a 2002 GMC Envoy XL is a moderately complicated job. It can be done by a mechanic at a dealership’s service department or by the owner of the car. To replace the fuel pump, the mechanic will need to get to the failed pump through the top of the fuel tank via an access panel in the passenger compartment or by removing the tank from the vehicle. The owner of the car will need to locate the relay for the fuel pump, which is in the fuse box under the hood, right behind the battery. They will then need to start the vehicle and pull the fuse relay. Once the engine cuts out, the relay can be put back in.
| Characteristics | Values |
|---|---|
| Year | 2002 |
| Vehicle | GMC Envoy XL |
| Items needed | New fuel pump and sending unit module, 7mm and 15mm socket and ratchet, 11mm wrench, flat blade screwdriver, pliers, drip pan, hammer and a chisel, pick, paper towels, jack and jack stands, and depending on the condition of your fuel tank straps you may also need a reciprocating saw |
| First steps | Locate the relay for your fuel pump and the fuse box under the hood right behind the battery |
| Next steps | Start up the vehicle and then pull the fuse relay. The engine will cut out as it loses fuel. Put the relay back in after you have turned off the key |
| Warning | Make sure you don't turn the key on again |
| Mechanic's access | Through the top of the fuel tank via an access panel in the passenger compartment or by removing the tank from the vehicle |
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What You'll Learn
Locating the relay for the fuel pump
To locate the relay for the fuel pump, you will need to open the hood of your 2002 GMC Envoy and look right behind the battery. There, you will find a fuse box. Start up the vehicle and pull the fuse relay. The engine will cut out as it loses fuel. Then, put the relay back in after you have turned off the key. Make sure you don't turn the key on again.
To access the fuel pump, a mechanic will need to get to the failed pump through the top of the fuel tank via an access panel in the passenger compartment or by removing the tank from the vehicle. This moderately complicated job is best performed at your dealership’s service department.
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Removing the retaining ring
First, locate the retaining ring that holds the fuel pump and sending unit in place. You'll need to push a small lock to one side to release it. Use a chisel to gently pry the ring loose, being careful not to let any rust or dirt fall into the fuel tank. Once the ring is free, carefully lift it off the fuel pump and sending unit.
This step requires precision and caution to avoid any debris falling into the tank, which could contaminate the fuel system. Ensure you have a clean workspace and consider using a drip pan to catch any falling debris.
If your Envoy's fuel pump is accessible through the top of the fuel tank, as is often the case, you may need to remove the rear seat or an access panel in the passenger compartment to reach the pump and retaining ring.
Before beginning this process, ensure you have gathered all the necessary tools and safety equipment, including eye protection and gloves, to protect yourself from any fuel or debris.
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Getting to the failed pump
To get to the failed pump, a mechanic will need to access the top of the fuel tank. This can be done through an access panel in the passenger compartment or by removing the tank from the vehicle.
To start, locate the relay for the fuel pump. There is a fuse box under the hood, right behind the battery. Start the vehicle and then pull the fuse relay. The engine will cut out as it loses fuel. Put the relay back in after turning off the key, but do not turn the key on again.
Next, you will need to remove the retaining ring. There is a small lock that you need to push to one side. You can use a chisel to get the ring moving. Once the ring is free, carefully lift it off the fuel pump and sending unit, being careful not to let any rust or dirt fall into the tank.
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Removing the tank from the vehicle
To start, locate the relay for the fuel pump. There is a fuse box under the hood, right behind the battery. Start up the vehicle and then pull the fuse relay. The engine will cut out as it loses fuel. Put the relay back in after you have turned off the key, but make sure you don't turn the key on again.
Depending on the condition of your fuel tank straps, you may need a reciprocating saw. You will also need a new fuel pump and sending unit module, a 7mm and 15mm socket and ratchet, an 11mm wrench, a flat blade screwdriver, pliers, a drip pan, a hammer and a chisel, a pick, paper towels, a jack and jack stands.
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Putting the relay back in
To put the relay back in, start up the vehicle and pull the fuse relay. The engine will cut out as it loses fuel. Put the relay back in after you have turned off the key. Make sure you don't turn the key on again.
To replace the fuel pump on a 2002 GMC Envoy, you will need to access the fuel pump through the top of the fuel tank via an access panel in the passenger compartment or by removing the tank from the vehicle. This is a moderately complicated job, so it is best performed at a dealership's service department. You will need a new fuel pump and sending unit module, a 7mm and 15mm socket and ratchet, a 11mm wrench, a flat blade screwdriver, pliers, a drip pan, a hammer and a chisel, a pick, paper towels, a jack and jack stands, and, depending on the condition of your fuel tank straps, a reciprocating saw.
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Frequently asked questions
A mechanic will need to get to the failed pump through the top of the fuel tank via an access panel in the passenger compartment or by removing the tank from the vehicle. You will need a new fuel pump and sending unit module, a 7mm and 15mm socket and ratchet, 11mm wrench, flat blade screwdriver, pliers, drip pan, hammer and a chisel, pick, paper towels, jack and jack stands, and depending on the condition of your fuel tank straps you may also need a reciprocating saw. Start out by locating the relay for your fuel pump and there's a fuse box under the hood right behind the battery.
You will need a 7mm and 15mm socket and ratchet, 11mm wrench, flat blade screwdriver, pliers, drip pan, hammer and a chisel, pick, paper towels, jack and jack stands, and depending on the condition of your fuel tank straps you may also need a reciprocating saw.
There's a fuse box under the hood right behind the battery.
