Fuel Tank - Thud/Cluck Noise

File In Section: 6E - Engine Fuel & Emission

Bulletin No.: 83-63-16

Date: July, 1998

Subject:
Fuel Tank Thud/Clunk Noise
(Install New Fuel Tank Straps and Insulator Pads)

Models:
1997-98 Chevrolet Venture
1997-98 Oldsmobile Silhouette
1997-98 Pontiac Trans Sport Built Prior to VIN Breakpoint WD100162

Condition

Some customers may comment that their vehicle exhibits a thud/clunk type noise audible when accelerating from a stop or during a braking maneuver when the fuel tank is filled between 5/8 and full.

Cause

This condition may be caused by fuel shifting within the fuel tank during certain maneuvers and colliding with the large radii at the ends of the fuel tank.

Correction





Install insulator pads to the top surface of the fuel tank and replace existing fuel tank straps with new components indicated. To insure proper installation, see Figure 1, and follow the procedures in the appropriate Service Manual.

Parts Information

P/N Description

10419933 Strap, Front, Fuel Tank
10407883 Strap, Middle, Fuel Tank
10407884 Strap, Rear, Fuel Tank
10419938 Insulator Pads

Parts are currently available from GMSPO.

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation Description Labor Time

L1260 Tank, Fuel - Use published
Replace Insulator labor operation
Pad time