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Disable CCR

[Disclaimer -- Proceed at your own risk; Thanks to Logan for sending.-- Bruce]
Document #740707
Info -- Procedure to Disable Illumination of Service Indicator AFTER installing Passive Struts #00-03-11-001A
Applies to:

1989-1992 Cadillac Allante
1991-1993 Cadillac Eldorado, Seville
1991-1995 Cadillac DeVille
This bulletin is being revised to clarify when this bulletin may be used to turn the service suspension lamp off.  Also, a step has been added to the 1991 Cadillac Eldorado and Seville repair.  Please discard Corporate Bulletin Number 00-03-11-001 (Section 3 -- Suspension)

Some owners may bring their vehicles in for service with an illuminated service suspension light.  The service suspension indicator lamp is telling the owner that the vehicle is due for strut/shock replacement, a maintenance item.  The customer may elect to have passive struts installed in their vehicles due to the repair cost savings and/or parts availability.  The installation of passive shock/struts will result in handling characteristics which are the equal to a like vehicle without the computer controlled ride, with all other components such as tires, tire pressure, springs, etc. being equal.  The installation of (4) new passive struts will cause the continued illumination of the service suspension indicator.  If desired by the customer, the service indicator may be disabled AFTER THE INSTALLATION OF THE (4) NEW PASSIVE STRUTS, using the appropriate service procedure listed below.  This bulletin DOES NOT authorize this procedure unless (4) NEW PASSIVE STRUTS WERE INSTALLED ON THE VEHICLE.

The wiring harness going to each strut and or chock assembly should be cut and taped back to clean-up the appearance both under the hood and under the vehicle.  In addition, each specific vehicle will require a modification as outlined below:

1989-1992 Allante with Speed Dependent Damping (SDD):  Refer to the Service Manual page 8D-13 (1989) or 8D-14 (1990-1992).  On these vehicles, adjust the BCM Override value "BS08".  To do this, use the warmer/cooler button on the CCDIC to decrease the BCM override value "BS08" which is displayed when you enter the system by two(2).  When the desired number is displayed on the CCDIC, it must be stored by holding the "Elapsed Time" and "Fuel Used" buttons until the new value flashes on and off.  When it flashes on and off, the new value has been stored.
1991 Eldorado and Seville with Computer Command Ride (CCR):  Refer to the Service Manual page 8D-12.  Set the BCM override value BS09 to 0 by using the warmer and cooler buttons.  Store this value by pressing the Econ button on the climate control panel and the Instant Econ button on the Fuel Data/Drivers Information Center for about five seconds.  The new value will be stored even through the indicator does not flash.  Remove the key from the ignition.  Disconnect both battery cables from the battery.  When both cables have been disconnected, touch the ends of the cables together and hold for five seconds.  This will discharge the capacitors in the system and allow the system to perform properly when the battery cables are reconnected.  Advise the customer they will have to reset all radio stations and clock.
1993 Eldorado and Seville with Speed Sensitive Suspension and 4.9L Engine Only:  Refer to page 8A-43-6 in the 1992 Eldorado Seville Service Manual.
Cut Circuit 1020 (PINK)
Attach the IPC side of circuit 1020 to relay pin 87A
Attach the module side of circuit 1020 to relay pin 86
Run a ground wire to relay pin 30
Run a wire from a switched ignition (hot in run) source to relay pin 85.
1991-1993 DeVille with Computer Command Ride (CCR):  Refer to the Service Manual, page 8A-43-0.  Cut Circuit 1300 (Dark Green wire) at the CCR module (Pin C15) to disable the indicator lamp.  Tape the wires back into the harness to prevent shorting to other components.
1994-1995 DeVille with Speed Sensitive Suspension (SSS) and 4.9L Engines ONLY:  Refer to the 1994 Eldorado, Seville, DeVille Service Manual, page 8A-43-14:
Locate and cut circuit 370 (RED)
Attach the IPC side of circuit 370 to pin 87A of the relay
Attach the module side of circuit 370 to pin 86 of the relay
Run a ground wire to relay pin 30
Run a wire from a switched ignition (hot in run) source to relay pin 85.
The following part numbers are required to make the correction on the 1993 Eldorado/Seville and the 1994-1995 DeVille:
Part Number Description Qty
12193601 Relay 1
15306045 Connector 1

Parts are currently available from GMSPO.