SP. POLICY: INOPERATIVE TRANS. SHIFT INDICATOR DISPLAY (IPC)
VEHICLES AFFECTED: 1986 Eldorados and Sevilles
Some early model 1986 Eldorados and Sevilles were produced without an operative transmission shift indicator display on the Instrument Panel Cluster (IPC). This Vacuum Florescent (VF) display provides an additional visual check of the transmission position selected by the driver by highlighting one of the seven possible selections (PRND321).
Special Policy Adjustment
This Special Policy provides for the installation of a new EPROM in the vehicle's Body Computer module which activates a lighted display in the instrument panel cluster indicating the transmission position selected by the driver (PRND321).
This particular enhancement will be provided at no charge to all owners of 1986 Eldorados and Sevilles, per the Vehicle Involved section of this bulletin.
Dealer Information
There is no mileage limitation on the provisions of this Special Policy, however, this special Policy adjustment offer will expire June 30, 1987. This special Policy Adjustment Bulletin should be filed in the three ring binder furnished to Dealers during September, 1982.
Owner Notification
OWNERS OF VEHICLES AFFECTED BY THIS SPECIAL POLICY ADJUSTMENT WILL BE NOTIFIED BY LETTER FROM GENERAL MOTORS OF CANADA LIMITED. A COPY OF THE OWNER LETTER IS ATTACHED.
Vehicles Involved
All 1986 Cadillac Eldorados and Sevilles within the following VIN ranges are eligible for this Special Policy Adjustment:
Eldorado - GU600001 through GU604414 Seville - GU800001 through GU803180
Parts Information
The parts required to complete this Special Policy should be obtained from the Parts Distribution Centres.
A description is provided below:
Description Usage Part Number ----------- ----- ----------- Calibrator (EPROM) - Body Multi- 1986 Eldorado 16068128 Function Electric Computer and Seville
Service Procedure
1. Remove the Body Control Module (BCM) and the BCM PROM in accordance with the Service Procedure in Section 8C of the 1986 Cadillac Service Information Manual - Eldorado and Seville.
2. Install new service EPROM - Part no. 16068128 into the EPROM socket of the BCM (Refer to Section 8C; 1986 Cadillac Service Information Manual - Eldorado and Seville).
3. Install BCM onto vehicle in accordance with the above stated procedure.
4. Turn ignition to the 'Run' position. (DO NOT START ENGINE).
5. Enter diagnostics, clear BCM codes and exit diagnostics. Each of seven possible transmission shift selections (PRND321) should now be displayed in the upper right portion of the Instrument Panel Cluster (IPC).
6. Move the transmission shift lever to each of the seven possible selections on the shift console. Each corresponding position on the IPC display should be surrounded by a lighted 'box'. See Figure 1.
7. Move the gear selector to drive. Verify that only the 'D' indicator is surrounded by a lighted 'box'. See Figure 1.
9. If all gear positions are surrounded by a lighted box during Step 6 or 7, or if B127 is stored in diagnostics when performing Step 8, perform the diagnosis described in connection with Code B127, PRNDL Circuit, Section 8D2; 1986 Cadillac Service Information Manual, Eldorado and Seville.
Credit
Credit will be issued upon receipt of a properly prepared warranty claim as follows:
Parts Part Parts Labour Labour Count Number Allowance Operation Hours ----- ------ --------- --------- ------ 1 16068128 * * * T615 3 . 4
* * *The parts allowance should be the total of the current GM Parts net plus 30% for the part (EPROM) required for this repair.
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.
