PURPOSE: The "Daytime Running Lights (SC2)" schematics located on pages ELPD 174 through 176 of the "1995 Revised Electrical Service Manual," incorrectly identifies the connector pinouts for the black, 30-way connector (12129099) used at the DRL relay pack. When diagnosing Canadian daytime running lights, refer to the schematics in this bulletin, while using the diagnosis in the "1995 Revised Electrical Service Manual."
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.