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Home >> GMC >> 2021 >> Terrain SLT, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (Automatic Transmission - 9T45 (M3U) Or 9T50 (M3D M3H) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC P171D >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
Component DTC Condition
B280 Automatic Transmission Accumulator Solenoid Valve P171D
  • Binding, sticking or stuck component: Solenoid Valve
  • Damaged or missing component:
    • Accumulator Valve Body Bolt
    • Solenoid Valve
Transmission Accumulator P171D
  • Blocked or restricted component: Fluid/oil passage
  • Leaking component: Transmission Accumulator
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