The 2012 Light Duty Full Size C&K Trucks, built on the GMT900/900HD (CK1XX) platform, represent a robust offering in the full-size pickup truck market. These trucks are engineered for demanding tasks, featuring powerful V8 engine options and substantial towing and hauling capabilities, complemented by comfortable interiors and advanced safety features for their time. They were designed to compete effectively against other major players in the segment, providing a blend of utility and refinement for a wide range of applications, from work to everyday transportation.

This comprehensive Electrical Service Manual is designed to assist owners, mechanics, and technicians in understanding and maintaining the intricate electrical systems of the 2012 Light Duty Full Size C&K Trucks. It covers primary areas such as Electrical Systems and Diagnostics, providing detailed wiring diagrams, component locations, fuse and relay information, and guidance on Diagnostic Trouble Codes (DTCs). The manual includes step-by-step diagnostic procedures, component testing methods, fuse and relay identification, ground point locations, connector pinouts, and advice on using diagnostic tools, making it an invaluable resource for troubleshooting and repairing a vast array of electrical components and systems.