ECM, PCM & BCM UNIT EXCHANGE PROGRAM POLICIES

Subject: ELECTRONIC CONTROL MODULE, POWERTRAIN CONTROL MODULE, BODY CONTROL MODULE - EXCHANGE PROGRAM

Model and Year: 1991 CAPRICE, CAMARO, CAVALIER, CORSICA, BERETTA, LUMINA, AND CORVETTE 1991 T1 TRUCKS AND U VAN (APV)

To ensure that replacement units are returned as soon as possible, ECM, PCM and BCM units are excluded from the normal 30 day parts retention policy as stated in the current (Division) Service Policies and Procedures Manual. ECMS, PCMs and BCMs are to be returned to GMSPO in accordance with section IV, item H (Parts Return) of the current GMSPO Parts and Accessories Policies and Procedures Manual.

Elimination of the 30 day retention period for these units will speed analysis and resolution of any reported malfunctions. It will also result in earlier receipt of credit for cores.

A two-part Return Tag is included in the remanufactured ECM, PCM and BCM containers. All areas of the tag MUST be properly completed for all units returned for repair. It is very important to describe what led to the replacement of these units (items 10 and 11 on the tag). If more space is needed than that given on the return tag, then include a separate sheet. This information will aid in the correct analysis of each unit. After completion of the tag, the extra copy is to be attached to the scrap copy of the repair order and retained for disposition by the (Division) Zone Representative.

A copy of the return tag is on the back side of this bulletin. Please be sure all affected personnel review this bulletin so all replaced ECM, PCM and BCM units are promptly returned.

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.