CTS-V V8-6.0L VIN U (2006)
Service Procedure
Reprogramming the Powertrain Control Module (PCM)
Note:
Before reprogramming, please check the battery condition to prevent a reprogram error of the Powertrain Control Module 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 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:
^
The control module serial data link tester
^
The RS-232 communication cable port
^
The connection at the data link connector (DLC)
^
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.
Program the powertrain control module (PCM) to the latest calibration part number. Use of the Pass Thru programming method is recommended, and
use of both the Tech2 with CANDi module and the TIS terminal is required. The procedure below is for Pass Thru programming.
Important:
Use data version 3.0 or later, broadcast to dealers on March 5, 2006; and on TIS CD-ROM version 3.0/2006, mailed to dealers beginning March 16,
2006.
To complete this service procedure, the TECH 2 must also be updated to release 26.002 or greater. If you cannot access the calibration, call the Techline
Customer Support Center and it will be provided.
1.
Verify the battery charge of 12 to 16 volts. The battery must be able to maintain the charge during programming. Use an additional jump battery if
necessary.
2.
Connect the Tech 2 to the vehicle and the TIS terminal.
3.
Turn the ignition to ON with the engine OFF.
4.
Turn off or disable any systems that may place a load on the battery during programming, such as automatic headlamps, radio, interior lights, etc.
5.
After all warning chimes inside the vehicle have stopped, turn on the Tech 2.
6.
On the TIS terminal go into SPS Programming.
7.
Select Pass Thru programming.
8.
Follow the instruction on the TIS terminal. When you get to the Supported Controllers screen.
8.1.
Scroll down in the top box and select PCM/VCM, Powertrain Control Module/Vehicle Control Module.
8.2.
In the lower box, select Normal.
8.3.
Select Next.
9.
When the calibrations screen comes up, pick the calibration described as, "CalibraUonn addresses customer concern of fuel gage accuracy" (or
any later supersession) and select Next.
