GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Yukon - 2WD 🢒 Diagnostic Navigation 🢒 Vehicle Diagnostic Information 🢒 Theft Deterrent System Schematics
Figure 1:

Content Theft Deterrent
Object Number: 1704340 Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
Control Module References
Door Jamb Switches
Door Jamb Switches
Low Speed Bus - SP200 - 1 of 3
Low Speed Bus - SP 200 - 2 of 3
Horn Schematics
Park Lamp Controls and Front Park Lamps
Low Beam and Daytime Running Lamps - X88/Z88
Door Jamb Switches
Figure 2:

SPO Alarm
Object Number: 1875016 Size: FS
Master Electrical Component List
Object Detection Description and Operation
Control Module References
Content Theft Deterrent
B+ Bus - 1 of 3
AIRBAG, SEO B1, and SEO B2 Fuses
AIRBAG, SEO B1, and SEO B2 Fuses