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Data Communication Schematics

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: Low Speed Bus - JX200 - 1 of 3

GM1906797

Courtesy of GENERAL MOTORS CORP.

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

GM1906799

Courtesy of GENERAL MOTORS CORP.

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

GM1906801

Courtesy of GENERAL MOTORS CORP.

Fig 4: High Speed Bus - 1 of 2

GM1906806

Courtesy of GENERAL MOTORS CORP.

Fig 5: High Speed Bus - 2 of 2

GM1906812

Courtesy of GENERAL MOTORS CORP.

Fig 6: Serial Data Communication Enable and Wake-up Circuits

GM2006034

Courtesy of GENERAL MOTORS CORP.

Fig 7: High Speed Bus (HP2)

GM2005978

Courtesy of GENERAL MOTORS CORP.

Fig 8: Powertrain Expansion Bus (HP2)

GM2005980

Courtesy of GENERAL MOTORS CORP.

Fig 9: Serial Data Gateway (SDG) Module (HP2)

GM2005981

Courtesy of GENERAL MOTORS CORP.