GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Power, Ground, Serial Data, and Switch


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Figure 2:

Front Object Sensors


Object Number: 2137650  Size: FS
Figure 3:

Rear Object Sensors


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Figure 4:

Power, Ground, Serial Data and Switch (UDP)


Object Number: 2180360  Size: FS
Figure 5:

Front Object Sensors (UDP)


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Figure 6:

Lane Departure Warning


Object Number: 2137660  Size: FS