GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2007 🢒 Lucerne 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Cruise Control Schematics
Figure 1:

Cruise Control ON/OFF Switch
Object Number: 1795021 Size: FS
Master Electrical Component List
Cruise Control Description and Operation (3.8L)
Control Module References
Serial Data Wake Up
High Speed Serial Data
Cruise Control Schematic Icons
Figure 2:

Serial Data Wake Up
Object Number: 1795037 Size: FS
Master Electrical Component List
Cruise Control Description and Operation (3.8L)
Control Module References
Indicators
ON/OFF Switch
Figure 3:

Indicators
Object Number: 1795044 Size: FS
Master Electrical Component List
Cruise Control Description and Operation (3.8L)
Control Module References
Serial Data Wake Up
High Speed Serial Data
Engine Data Sensors - APP and TAC
Power, Ground, and Low Speed GMLAN
High Speed Serial Data
Engine Data Sensors - APP and Throttle Body Assembly