For 1990-2009 cars

# INTERMITTENT POWER REDUCTION ENGINE STOPS

#### VEHICLES AFFECTED: 1981 6.0L and 1982-1985 4.1L DFI Equipped Vehicles

Some 1981 through 1985 DFI equipped vehicles may experience an intermittent reduction of power and/or engine stops running due to intermittent injector circuit operation. The following trouble trees should be used when attempting to diagnose auch a condition. In some cases, it may be necessary to operate the vehicle and record the voltages as outlined, while the performance condition exists.

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.