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

Content Theft Deterrent


Object Number: 1847659  Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
Control Module References
SPO Theft
Door Jamb Switches AN3/DL3
Door Jamb Switches AN3/DL3
Low Speed Bus - 2 of 3
Horn Schematics
Park Lamp Controls and Front Park Lamps
Low Beam and Daytime Running Lights
Door Jamb Switches AN3/DL3
Figure 2:

SPO Theft


Object Number: 1874317  Size: FS
Master Electrical Component List
Content Theft Deterrent (CTD) Description and Operation
Control Module References
Content Theft Defferent
AIRBAG BATT, ALC COMP, EAP, LGM, SEO B1 and SEO B2 Fuses