Serial Data Gateway Module (SDGM) Reprogramming

When SDGM reprogramming must be performed, refer to Service Programming System (SPS) .

Ensure the following conditions exist in order to prepare for SDGM programming or reprogramming:

• The battery is fully charged.
• The ignition switch is in the RUN position.
• The Techline equipment cable connection at the data link connector (DLC) is secure.

Program the SDGM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.

If the SDGM fails to program, proceed as follows:

• Ensure the DLC and SDGM connections are good.
• Inspect the Techline equipment for the latest software version.
• Attempt to program the SDGM. If the SDGM still cannot be programmed properly, replace the SDGM.