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Home >> GMC >> 2021 >> Yukon AT4 >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Seat Belts >> Diagnostic Information and Procedures >> DTC B1921 >> Reference Information

Reference Information

Schematic Reference

Seat Belt Wiring Schematics 

Connector End View Reference

Master Electrical Component List , or Component Connector End Views - Index

Description and Operation

Supplemental Inflatable Restraint System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information