Data Communication Schematics

WARNING: This page is about a different car, the 2007 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: DLC Power, Ground and IPM Schematic

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Fig 2: GMLAN - High Speed, Domestic w/UE1, F55 w/o F55 Schematic

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Fig 3: GMLAN - High Speed, Domestic W/UE1, K59, F55 Schematic

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Fig 4: GMLAN - High Speed, Export w/ TR7/LC3 w/o UE1 Schematic

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Fig 5: GMLAN - High Speed, Export w/ TR7/F55/LC3 w/o UE1 Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 6: GMLAN - High Speed, Export w/ TT7/ TT8, F55, K59 w/o UE1 Schematic

Courtesy of GENERAL MOTORS CORP.

Fig 7: GMLAN - Low Speed 1 of 2 Schematic

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Fig 8: GMLAN - Low Speed 2 of 2 Schematic

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Fig 9: GMLAN - High Speed Serial Data Wake Up Schematic

Courtesy of GENERAL MOTORS CORP.