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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 P27A7-P27AC >> Circuit/System Verification

Circuit/System Verification

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  1. Ignition - On / Vehicle - In Service Mode
  2. Verify DTC P27A7, P27A8, P27A9, P27AA, P27AB, P27AC is not set.
    • Go to next step: If no DTC is set 
  3. All OK.
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