For step by step programming instructions, please refer to the techline information
system (TIS) terminal.
Review the information below to ensure proper programming protocol.
Important: DO NOT program a control module unless you
are directed by a service procedure or you are directed by a General Motors Corporation
service bulletin. Programming a control module at any other time will not permanently
correct a customer's concern.
It is essential that the Tech 2 and
the TIS terminal are both equipped with the latest software before performing service
programming system (SPS).
Some modules will require additional programming/setup events performed before
or after programming.
Review the appropriate service information for these procedures.
Ensure the following conditions are met before programming a control module:
| - | There is not a charging system concern. All charging system concerns
must be repaired before programming a control module. |
| - | Battery voltage is greater than 12 volts but less than 16 volts.
The battery must be charged before programming the control module if the battery voltage
is low. |
| - | A battery charger is NOT connected to the vehicle's battery. Incorrect
system voltage or voltage fluctuations from a battery charger, may cause programming
failure or control module damage. |
| - | Turn OFF or disable any system that may put a load on the vehicle's battery,
such as the following components: |
| • | Daytime running lights (DRL)--Applying the parking brake, on most
vehicles, disables the DRL system. Refer to the Owner's manual. |
| • | Heating, ventilation, and air conditioning (HVAC) systems |
| • | Engine cooling fans, radio, etc. |
| • | 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. Attempt to reprogram the control
module. If the control module cannot be programmed, replace the control module. |
