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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission - 9T50 (M3D), 9T60 (M3T) Or 9T65 (M3V) - Diagnostic Information And Procedures >> Diagnostic Information and Procedures >> DTC P0721-P0723, P077C, or P077D >> 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
Signal P077C P077C P077D * P0721, P0722, P0723
*Internal control module or component damage may occur if the circuit shorts to B+.
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