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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 297 (Supplemental Restraints System) >> Diagnostic Information and Procedures >> DTC B0021 or B0029 >> DTC Descriptors

DTC Descriptors

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
DTC B0021

Left Front Head Curtain Module High Control

DTC B0029

Right Front Head Curtain Module High Control

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