Regal V6-231 3.8L VIN L SFI (1990)
Fuel Tank Mounting Straps: Customer Interest
Fuel Tank - Underbody Creak/Groan Noise
Bulletin: 91-10-34
Date: Oct. '91
Ref. No.: 91-266-10
Corp. Ref. No.: 136304
SUBJECT:
FUEL TANK/UNDERBODY CREAK/GROAN NOISE (SERVICE PROCEDURE FOR INSTALLING FUEL TANK STRAPS AND
SPACERS)
MODELS AFFECTED: 1989-91 REGALS
This bulletin cancels and supersedes Buick Bulletin 91-10-20. Additional information and part numbers are provided to address another fuel tank related
noise condition.
CONDITION:
Some 1989-91 Regals may exhibit a creak/groan or in severe instances a clunk/thud type noise coming from the rear of the vehicle. This noise is most
apparent when a vehicle twisting motion is generated, such as that which would be experienced when turning up a steep incline/driveway.
CAUSE:
These noise conditions may be caused by the fuel tank flange contacting the underbody crossbar located forward of the fuel tank or movement between
the tank and retaining straps.
CORRECTION:
On 1989-91 Regals assembled prior to VIN M1848929, install new fuel tank straps, P/N 10199250 (2 required), and strap spacers, P/N 10192675 (2
required).
On 1991 vehicles assembled after VIN M1848929, it will only require installation of tank straps, P/N 10199250 (2 required) and the transfer of existing
strap spacers.
SERVICE PROCEDURE:
1. Raise vehicle on hoist.
2. Remove exhaust intermediate pipe heat shield.
3. Support fuel tank assembly.