The Chevrolet Blazer and GMC Jimmy are popular GM vehicles, and in 1998 they were equipped with a number of vehicle options that make determining the correct fuel module for either application confusing.
These vehicle applications could potentially offer three different fuel modules to fit. They are FG0072, FG0052 and FG0071.
The FG0072 fuel module is designed for use on two-door applications. This is easy to identify, so there is little confusion regarding these applications.
The confusion typically surrounds the remaining two fuel modules, FG0052 and FG0071, which both fit four-door applications.
The catalog indicates that FG0052 fits the four-door Blazer with an 18-gallon fuel tank, while FG0071 fits a four-door Blazer exc. 18-gallon fuel tank. Regardless of the descriptions, mistakes can be made when fuel tank size cannot be determined.
If you are having difficulty determining the tank size, see if the tank is made of plastic or steel. The 18-gallon tank option is made of plastic, using FG0052. The exc. 18-gallon tank option is made of steel, using FG0071.
If you do not know either the fuel tank size or material, you can determine the correct module by examining it once removed from the fuel tank.
The FG0052 fuel module, which is used in the 18-gallon plastic tank, uses a cuff-style seal and cover design as shown in the photo.
By spending minimal time determining the type of fuel tank and/or module used in these applications, you can reduce part returns and increase customer satisfaction.