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As you are probably already aware, popular GM vans Chevy Express and GMC Savannah from 1998 and 2002 are equipped with numerous vehicle options. This can make determining the correct fuel module or pump for these applications challenging.

Did you know there are as many as 11 different fuel modules or fuel pumps to fit this van application? The most common parts are FG0098 and FG0099. It's those two numbers that provide the focus for this article.

FG0098 and FG0099 are identical except for the fuel tank pressure sensor located on the top of the fuel module.

Determining which part your van needs can be confusing and, if not selected correctly, can lead to an incorrect installation and customer comeback.

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Find the GVW

The FG0099 shown on top has a fuel tank pressure sensor, while the FG0098 shown on the bottom does not. Both fuel modules are similar except for the fuel tank pressure sensor.

To determine if you need FG0098 or FG0099, you will need the Gross Vehicle Weight (GVW) information. GVW can be difficult to locate and is the key determining factor when making the correct choice. If this information is missing, the opportunity to choose the wrong part increases.

But where is the GVW? Knowing is half the battle. GVW information is typically located on a label on the driver's door.

Find the Evaporative Emission Sensor.

FG0098 and FG0099 are identical except for the fuel tank pressure sensor located on the top of the fuel module.

In addition to GVW, the next key to correct selection is determining if the fuel module in the van is equipped with an evaporative emission sensor or not. This information is often located on a label inside the engine compartment. If the vehicle is not available, but the fuel module removed is, examine the top of the fuel module to determine if there is an evaporative emission in the fuel module cover. Based on what you see, the correct module can be selected.

If the fuel module is still in the van, a determination as to which module is needed may be done by carefully looking at or feeling the top of the fuel module cover to determine how many electrical connectors there are. If there are two connectors, the van needs a FG0099 fuel module. If there is one connector, the van needs a FG0098 fuel module.

By spending a minimal amount of time to determine if you have a van equipped with or without an evaporative emission sensor you can select the correct fuel module, reduce customer part returns.