Subject: Exhaust Boom at 1500 RPM (Install Spacers to Exhaust Hanger)
Model Year: 2000 Chevrolet Corvette
Built from S.O.P. through December, 1999
Some customers may comment on an exhaust boom heard inside the vehicle at 1500 RPM. Customers may also indicate an exhaust pipe outlet to fascia misalignment.
Install one 2 mm (.079 in) thick washer on each stud (2 per side), P/N 11505463, between the bumper bar and the muffler hanger, using the following procedure:
Washer, Flat 2mm
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.
Article ID: 429
Created: July 23, 2014
Last Updated: July 23, 2014
Online URL: https://www.corvetteactioncenter.com/tech/knowledgebase/article/2000-corvette-service-bulletin-exhaust-boom-at-1500-rpm-429.html