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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (Anti-Lock Brake System And Traction Control System) >> Diagnostic Information and Procedures >> DTC C0121 >> DTC Descriptor
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DTC Descriptor

WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
DTC C0121

Valve Relay Circuit

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