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Home >> Chevrolet >> 2024 >> Tahoe Commercial, 4WD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 10L80 (MHS MHU MQC) - Diagnostic Information And Procedures (1 Of 2) >> Diagnostic Information and Procedures >> DTC P0721-P0723, P077C, P077D, P172A, or P172B >> Diagnostic Fault Information

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
9 V Reference P077C** P077C** P077D P0721, P0722, P0723, P172A, P172B
Signal P077C P077C P077D* P0721, P0722, P0723, P172A, P172B
*Internal control module or component damage may occur if the circuit shorts to B+.
**Additional DTCs may set
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