GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Regal 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Data Communication Schematics
Figure 1:

High Speed GMLAN (1 of 3)
Object Number: 2179961 Size: FS
Figure 2:

High Speed GMLAN (2 of 3)
Object Number: 2179963 Size: FS
Figure 3:

High Speed GMLAN (3 of 3)
Object Number: 2179964 Size: FS
Figure 4:

Mid Speed GMLAN
Object Number: 2179967 Size: FS
Figure 5:

Low Speed GMLAN
Object Number: 2179969 Size: FS
Figure 6:

Chassis Speed GMLAN
Object Number: 2179971 Size: FS
Figure 7:

Serial Data Communication Enable
Object Number: 2179973 Size: FS
Figure 8:

Serial Data - LIN 1
Object Number: 2179976 Size: FS
Figure 9:

Serial Data - LIN 2
Object Number: 2179978 Size: FS
Figure 10:

Serial Data - LIN 3 and 4
Object Number: 2179981 Size: FS
Figure 11:

Serial Data - LIN 8 (Memory)
Object Number: 2179983 Size: FS
Figure 12:

Data Link
Object Number: 2179985 Size: FS