LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1219 (Data Communication System) >> Repair Instructions >> Serial Data Gateway Module Replacement (HP2)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Serial Data Gateway Module Replacement (HP2)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Serial Data Gateway Module (HP2)
GM1897790Courtesy of GENERAL MOTORS CORP.
Callout Component Name
Preliminary Procedures: 
Remove the inflatable restraint module. Refer to Inflatable Restraint Instrument Panel Module Replacement .
1 Serial Data Gateway Module Assembly

Procedure

  1. Press on the tabs to release the serial data gateway module.
  2. Disconnect the electrical connectors.
  3. Reprogram the serial data gateway module if replaced. Refer to Control Module References .