Lucerne V6-3.8L VIN 2 (2006)
Keyless Entry Module: All Technical Service Bulletins
Service Procedure
Important:
Technicians may experience low performance using the TIS2 web application when reprogramming the vehicle to correct the condition.
Technicans may notice the lower application performance from mid-morning until late afternoon.
To assist in improving performance and reduce programming time, it is recommended to complete the bulletin procedure on customer vehicles
first. Vehicles in inventory should be programmed during off peak hours if low performance is experienced.
Important:
This bulletin contains two reprogramming procedures, 1) reprogramming of the BCM, and 2) reprogramming of the RCDLR. Not all vehicles
require reprogramming of both.
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The Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Suburban, Tahoe; and GMC Yukon and Yukon XL vehicles
require the BCM and RCDLR reprogramming.
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The Buick Lucerne; Cadillac DTS; Chevrolet Impala, Monte Carlo; Chevrolet Equinox; and Pontiac Torrent require only the RCDLR
reprogramming - DO NOT ATTEMPT TO REPROGRAM THE BCM ON THESE VEHICLES.
Body Control Module Reprogramming - For Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Suburban, Tahoe; and GMC
Yukon, Yukon XL ONLY:
Important:
The calibration numbers required for this service procedure are programmed into control modules via a Techline Tech 2(R) scan tool and the
Techline Information System (TIS) terminal with the calibration update. Use TIS 2 Web version 2.0 for 2007 (available on 02/04/07) and on
TIS DVD version 2.0/2007 or later, that was mailed to dealers on 02/14/2007. If you cannot access the calibration, call the Techline Customer
Support Center.
Notice:
Before reprogramming, please check the battery condition to prevent a reprogramming error of any of the modules due to battery discharge.
Battery voltage must be between 12 and 16 volts during reprogramming. If the vehicle battery is not fully charged, use jumper cables from an
additional battery. Be sure to turn off or disable any system that may put a load on the battery, such as automatic headlamps, daytime running
lights, interior lights, heating, ventilation, and air conditioning (HVAC) system, radio, engine cooling fan, etc. A programming failure or
control module damage may occur if battery voltage guidelines are not observed.
The ignition switch must be in the proper position. The Tech 2(R) prompts you to turn ON the ignition, with the engine OFF. DO NOT change the
position of the ignition switch during the programming procedure, unless instructed to do so.
Make certain all tool connections are secure, including the following components and circuits:
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The RS-232 communication cable port
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The connection at the data link connector (DLC)
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The voltage supply circuits
DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or
control module damage may occur.
DO NOT turn OFF the ignition if the programming procedure is interrupted or unsuccessful. Ensure that all control module and DLC connections
are secure and the TIS terminal operating software is up to date.
Tech 2 Pass-Thru Method for the Body Control Module (BCM)
1.
Verify that there is a battery charge of 12 to 16 volts. The battery must be able to maintain a charge during programming. Use an additional jump
battery if necessary.
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If the vehicle will not start, test and charge the battery. Refer to SI for battery testing and charging information, if required.
^
If the battery will not hold a charge, replace the battery. Do NOT replace the battery unless it can't be charged or a leak and/or physical
damage is present.
2.
Connect the Tech 2 to the vehicle and the TIS terminal.
3.
Turn the ignition to the ON position with the engine OFF.
