The 1998 Jimmy-Blazer Fuel Tank Dilemma – UnderhoodService

The 1998 Jimmy-Blazer Fuel Tank Dilemma

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.

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.
 

this is the seal and cover design used on the fg0071 fuel module. this design was made for use in a steel fuel tank.

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.
 

This is the seal and cover design used on the FG0052 fuel module. This design was made for use in a plastic fuel tank.

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. 
 
Courtesy of Delphi.

You May Also Like

Tools To Service Serpentine Belts

Servicing the serpentine belt on some vehicles is a tough task.

Servicing the serpentine belt on some vehicles is a tough task. Without the right tools it is almost impossible. Here are six tools your shop needs to make your next belt replacement more productive.

Don’t Fight It
If you are still fighting belt tensioners with 3/8” breaker bar and wrenches, there are better solutions. There are serpentine belt kits that can help you get the right angle and attachment point on a tensioner to remove the old belt and install the new belt.

Battery Charging and Diagnostics

Here are six tips to use when diagnosing a vehicle with a dead battery. 

Why Do Timing Chains Stretch?

As the timing chain wears, it can change the timing of the camshaft and crankshaft.

Carbon Deposits and Direct Injection Engines

The primary cause of these problems is that fuel and added detergents are not hitting the back of the intake valves.

Acura Turbo Engine Service

It is important to check the operation of the solenoids that control vacuum to the actuators.

Other Posts

Subaru EJ25 Head Gasket Problems

Most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak.

Honda Electronic Throttle Body Service Tips

Using care and following OEM procedures will help you to avoid unnecessary parts replacement and comebacks.

New Oil Specifications

Many 0W16 oils have a new donut certification mark on the bottle called API SN-PLUS and SN-PLUS Resource Conserving.

Solving Intermittent Overheating

New cooling systems anticipate and influence changes in coolant temperature.