During April, 1987 some 32-way female micropack connectors were produced with the row identification letters "C" and "D" reversed. The affected connectors are black or brown in color.
Some of these connectors may have been used for the ECM on all affected models and the BCM for the Eldorado, Seville, and Allante. Service parts may also be affected.
The connector will work properly, but could cause confusion if electrical troubleshooting is necessary. Figure 1 shows a properly identified connector. All Service Manual terminal call-outs use the row identification as shown in Figure 1. Row "D" should be on the same side of the connector as the "PED" logo.
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.