Grand Prix V6-3100 3.1L MFI VIN M (1994)
Exhaust Pipe: All Technical Service Bulletins
Exhaust - Moan or Hoot in the Passenger Compartment
Group Ref.: 6 - Engine
Bulletin No.: 436601
Date: June, 1994
SUBJECT:
EXHAUST MOAN/HOOT
(INSTALL DAMPER)
MODELS:
1994
BUICK REGAL
1995
CHEVROLET LUMINA AND MONTE CARLO
1993-94
OLDSMOBILE CUTLASS SUPREME
1994
PONTIAC GRAND PRIX
WITH 3.1L V6 ENGINE (VIN M - RPO L82)
CONDITION:
Some customers may comment on an exhaust hoot/moan audible in the vehicle passenger compartment on vehicles with single or dual exhaust. This
condition is apparent when the engine is operated in the 1000-1100 or 1800-2000 RPM ranges after a cold start.
CAUSE:
Vehicle exhaust system excited by engine exhaust pulse induced vibration.
CORRECTION:
Install damper, P/N 10137383, using exhaust pipe clamp, P/N 10114791, following the procedure indicated below.
SERVICE PROCEDURE:
1.
Raise vehicle.
