Data Communication Schematics

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2009 GMC Yukon XL, 2009 GMC Yukon, 2009 Chevrolet Tahoe, 2009 Chevrolet Suburban, and 2009 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Low Speed Bus - JX200 - 1 of 3

GM2074678

Courtesy of GENERAL MOTORS CORP.

Fig 2: Low Speed Bus - JX200 - 2 of 3

GM2074682

Courtesy of GENERAL MOTORS CORP.

Fig 3: Low Speed Bus - JX200 - 3 of 3 and JX300

GM2074685

Courtesy of GENERAL MOTORS CORP.

Fig 4: High Speed Bus - 1 of 2

GM2074688

Courtesy of GENERAL MOTORS CORP.

Fig 5: High Speed Bus - 2 of 2

GM2074692

Courtesy of GENERAL MOTORS CORP.

Fig 6: LIN Bus

GM2196614

Courtesy of GENERAL MOTORS CORP.

Fig 7: Serial Data Communication Enable and Wake-up Circuits

GM2074697

Courtesy of GENERAL MOTORS CORP.

Fig 8: High Speed Bus (HP2)

GM2074699

Courtesy of GENERAL MOTORS CORP.

Fig 9: Powertrain Expansion Bus (HP2)

GM2074701

Courtesy of GENERAL MOTORS CORP.

Fig 10: Serial Data Gateway (SDG) Module (HP2)

GM2074703

Courtesy of GENERAL MOTORS CORP.