Condition: Rear Underbody buzz or rattle on vehicles equipped with N10 exhaust (Dual Catalytic Converters)
Cause: Heat Shield hits floor pan.
Correction: Install rubber bumper P/N 10164154 at location shown in Figure 1.
Parts are currently available from GMSPO.
Labor Operation Number: T1674
Labor Time: 0.3 Hours
Trouble Code: 92
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those 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 a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.