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Home >> Chevrolet >> 2021 >> Trailblazer RS, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Automatic Transmission - VT40 (MRG) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P0721-P0723, P077C, or P077D >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different variant/trim than selected.
Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
9 V Reference P077C, P176D P077C - P0721, P0722, P0723
Signal P077C P077C P077D* P0721, P0722, P0723
*Internal control module damage may occur if the circuit is shorted to B+.
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