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2000 Buick Century, Regal
Models: 2000 Chevrolet Impala, Monte Carlo
Condition:
Some customers may comment on a bang/slosh type noise coming from the rear of the vehicle. This noise will be most noticeable when the vehicle comes to a stop or during parking lot maneuvers. Customers may also comment that the noise will not occur when the fuel tank is full.
Cause:
The noise may be caused by fuel in the fuel tank sloshing when the fuel level is below full. This noise is transferred through the rear seat and storage area due to hard contact between the fuel tank and the floorpan.
Correction:
Install insulator pads (P/N 88895867) to the top of the fuel tank and to the fuel straps, using the following service procedure:
Remove the fuel tank. Refer to the Fuel Tank Replacement Procedure in the Engine Controls sub-section of the Service Manual.
Remove the old insulator pads from the top of the fuel tank and clean the insulator pad mounting surfaces with a suitable cleaner.
Important:
Some of the fuel tanks and fuel tank straps may have a thinner insulator pad already located at one or more of the installation points. Remove the original pads to ensure proper adhesion of the new insulator pads.
Clean the fuel tank straps with a suitable cleaner.
Using a utility knife, cut the insulator pads (P/N 88895867) as follows:
Cut 5 pieces measuring 63.5 mm X 63.5 mm (2½ in X 2½ in) for use on the top of the fuel tank.
Cut 8 pieces measuring 38.1 mm X 63.5 mm (1½ in X 2½ in) for use on the fuel tank straps.
Install the insulator pads to the top of the fuel tank as shown in Figure 1.
FIGURE Figure 1 -- Fuel Tank Insulators©
Figure 1
(1) Insulator Location #1.
(2) Insulator Location #2 & #3.
(3) Insulator Location #4 & #5.
Install the insulator pads to the fuel tank straps as shown in Figure 2.
FIGURE Figure 2 -- Fuel Tank Strap Insulators©
Figure 2
(a) RH Strap -- 57.2 mm (2¼ in).
(
RH Strap -- 88.9 mm (3½ in). © RH Strap -- 203.2 mm (8 in).
(d) RH Strap -- 82.6 mm (3¼ in).
(e) LH Strap -- 196.9 mm (7¾ in).
(f) LH Strap -- 209.6 mm (8¼ in).
Install the fuel tank to the vehicle. Refer to the Fuel Tank Replacement Procedure in the Engine Controls sub-section of the Service Manual.
Parts Information:
Part Number Description
88895867 Fuel Tank Insulator Kit
Parts are currently available from GMSPO.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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