The Service Programming System (Sps); Printing A Snapshot; Vci Number - GMC Tech2 User Manual

Printing a Snapshot

Printing can be accomplished in three ways:
1. Using the "Print" command in the File menu.
2. Using the "Print screen dump" icon on the TIS2Web toolbar.
3. Using the "Print" icon on the snapshot toolbar.
The "Print" commands produce a text listing of data parameters. The "Print screen dump"
icon produces a full-page representation of what's displayed on the monitor.

The Service Programming System (SPS)

The Service Programming System (SPS) updates the flash calibration files that are stored
in a vehicle onboard controller (e.g. PCM, ABS, VTD). The calibration file custom-tailors a
module to a certain vehicle. The calibration file contains data for things such as spark
curves and fuel control. When troubleshooting a driveability condition, diagnosis may call
for reprogramming the controller with newer calibration information to correct a customer
concern.
The ECM/PCM controller can generally use four types of serial communications:
•
UART (Universal Asynchronous Receive and Transmit)
•
Class 2
•
Keyword
• CAN – GM LAN (recent communications application currently available only on a
few limited applications)

VCI Number

A Vehicle Configuration Index (VCI) is a number representing a valid combination of parts
and systems built in a vehicle, including optional equipment. GM Service and Parts
Operations uses VCI numbers to identify a unique calibration or group of calibrations.
You will need a VCI number to access vehicle calibrations when reprogramming if the VIN
of the vehicle is not part of the TIS2Web data, depending on the vehicle, if it has been
reconfigured from its original build specifications. Keep in mind that many calibrations for
reconfiguring vehicles (adding/changing options, such as fog lamps) are selectable in
TIS2Web and a VCI number is not necessary.
If the VIN is not part of the TIS2Web data that is currently loaded, a TIS2Web error
message will state that the VIN is incorrect or a VCI number is needed. If this is the case,
make sure that the appropriate software version is loaded to your computer.
A VCI number also allows you to program a vehicle that has been reconfigured from its
original configuration. This includes changes in tire sizes and axle ratios. When selecting
Reconfigure from the "Supported Controllers" screen in TIS2Web, the calibrations that
support various configurations are presented as information only. To access those
calibrations, you'll need a VCI number.
The VCI number provides access to all of the latest calibrations available for the vehicle
based on its VIN.
General Motors Tech2 User Guide
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