For 1990-2009 cars

# ENGINE STARTING DIFFICULTY OR LOW ACCELERATION

CATALYTIC CONVERTER REPLACEMENT

1985-87 FIREBIRD MODELS WITH A 60 DEGREE V-6 2.BL MPFI ENGINE (VIN CODE S)

Some 1985-87 Firebird models with a VIN Code S engine may exhibit an engine starting difficulty and/or reduced acceleration condition. These symptoms may be due to a damaged catalytic converter. If the converter is found to be damaged, other engine components may be the cause of the converter damage. Therefore, it is recommended that spark plugs, spark plug wires, ignition coil or other related ignition components be inspected for proper function before returning the vehicle to the owner.

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.