ECM TERMINAL VOLTAGE CORRECTION TO CHASSIS MANUAL

MODELS AFFECTED: 1987 CENTURYS, SOMERSETS, AND SKYLARKS WITH 2.5L ENGINES (VIN CODES R AND U)

Page 6E2-A2-15 of the 1987 Buick Chassis Service Manual (Vol. 1) contains an error. The voltage reading at Pin B9 (Ignition Ref. Hi) should be about:

Key "On" = 4.5V Eng. Run = 3.OV

Please make note of this on the page referenced above.

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.