Replacing Fuel Pump Relay In Blazers: Step-By-Step Guide

If you're looking to change the fuel pump relay in your Chevrolet Blazer, the first step is locating it. The location of the fuel pump relay in Blazers seems to vary by model year. For instance, in 1994 and 1996 models, the fuel pump relay is located behind the glove box. In 1995 and 1997 models, it is located under the hood, on the driver's side. In 2001 models, it is located under the hood, next to the firewall on the driver's side. Once you've located the fuel pump relay, you can proceed to change it.

Location of the fuel pump relay in a 1996 Blazer

If you own a 1996 Chevrolet Blazer and are looking to locate the fuel pump relay, this is the right place. The fuel pump relay is located in the relay centre behind the glove box. There is an access cover in the glove box for the relays.

To get to the relay centre, you will need to open the glove box and locate the access cover. Once you have found the cover, open it and you will see the relays. The fuel pump relay is one of the three relays in the glove box and is the one on the left, closest to the driver's side. The relay on the right is for the horn.

The fuel pump fuse is located in the instrument panel fuse box and is labelled ECM BATT. This is different from the relay and is located elsewhere in the vehicle.

It is important to note that this information is specific to the 1996 Chevrolet Blazer and may not apply to other models or years of the Blazer.

Location of the fuel pump relay in a 1994 Blazer

The fuel pump relay in a 1994 Chevrolet Blazer is located in the engine compartment, on the right side of the firewall. It is placed in the fuse panel under the hood, near the driver's side.

Some users have also reported that the relay can be found inside the glove box, under the dash in the convenience centre, or under the driver's seat between the door panel and the brake pedal.

To access the fuel pump relay, lift the truck hood and look in the engine compartment. It should be on the right, beside the firewall, above the power-assist brake canister or master brake cylinder.

The fuel pump relay is a small, rectangular part that is usually black or grey in colour. It is often located near other relays or fuses.

Location of the fuel pump relay in a 1995 Blazer

The fuel pump relay in a 1995 Chevrolet Blazer is located in the upper left corner of the glovebox, behind a black plastic cover. There should be two relays visible; the fuel pump relay is the one on the left. You can hear it working when you turn on the key, as it will click after the fuel pump pressurises.

If the fuel pump relay is not in the glovebox, it may be located in the main fuse/relay box under the hood on the driver's side.

Location of the fuel pump relay in a 1987 Blazer

The fuel pump relay in a 1987 Blazer is located on the firewall beside the brake booster. There are two black boxes that measure about one inch by one inch. One is the fuel pump relay, and the other is the horn. These can be switched to check if the horn and fuel pump are working.

There is also a wire sticking out of the harness on the firewall, which may be pink, with a female connector that is not plugged in. This is the fuel pump bypass. To test the fuel pump, you can apply 12V to this wire by connecting it to the positive terminal of the battery.

In addition, there are four relays located between the coolant bottle and the windshield washer fluid bottle in the engine compartment. One of these four relays is the fuel pump relay.

It is recommended to consult a mechanic or a professional for further guidance and to ensure the correct procedure is followed for your specific vehicle.

Testing the fuel pump relay

Step 1: Locate the Fuel Pump Relay

The first step is to locate the fuel pump relay in your Blazer. It is usually found in the fuse box, which could be under the hood, in the engine compartment, or even inside the glove box, depending on the model and year of your Blazer.

Step 2: Prepare the Necessary Tools

You will need a multimeter or a voltmeter to test the relay. A multimeter is a device that can measure voltage, current, and resistance, while a voltmeter measures voltage specifically. Ensure you have the necessary knowledge and skills to use these tools safely and accurately.

Step 3: Check Voltage at the Relay Pins

With the engine off, use the multimeter or voltmeter to check the voltage at the relay's pins. Here are the expected voltage readings:

• Pin 30 to ground with the engine off: Approximately 12.45 volts.
• Pin 30 to ground with the engine running: Approximately 13.70 volts.
• Pin 87 to ground: Approximately 13.7 volts.
• Pin 86 to ground: 0 volts.

Step 4: Inspect for Heat Damage

In addition to voltage testing, it is important to inspect the fuel pump relay for any signs of heat damage. This includes burn marks or melting around pins 30 and 87. If the relay shows signs of heat damage, it may be an indication of a larger issue, such as a problem with the fuel pump itself or a broken wire.

Step 5: Compare Results

Finally, compare your voltage readings and heat damage inspection results with those of a known good relay. If your readings deviate significantly or you notice heat damage, it may indicate a faulty relay or an underlying issue with the fuel pump system.

It is important to note that testing a fuel pump relay requires working with the vehicle's electrical system. Always exercise caution and refer to a qualified mechanic or technician if you are unsure about any aspect of the testing procedure.

Frequently asked questions