SERVICE MANUAL UPDATE-REVISED THROTTLE BODY FUEL RAIL TORQUE

Models 1987-89 6000 AND GRAND PRIX WITH Affected: 2.8L (VIN CODE W) AND 3.1L (VIN CODE T)

SERVICE MANUAL UPDATE

The throttle body attaching bolt torque and fuel rail attaching bolt torque specifications are incorrect in some service manuals. The correct torque specifications are:

Throttle body to plenum attaching bolts - 25 N.m (18 lb. ft.)

Fuel rail to intake manifold attaching bolts - 10 N.m (88 lb. in.)

When reinstalling the intake plenum, tighten plenum attaching bolts to - 21 N.m (16 lb. ft.)

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.