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Home >> Saturn >> 2010 >> Sky Base, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Automatic Transmission - 5L40-E/5L50-E - Symptom Troubleshooting And Diagnosis) >> Inaccurate Shift Points

Inaccurate Shift Points

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Check Causes
DEFINITION: An upshift or a downshift, or TCC apply, that occurs at a speed outside of the calibrated range. Refer to Shift Speed .
Fluid Pump Assembly
  • Stuck pressure regulator valve
  • Sticking pump slide
Control Valve Body Accumulator Assembly Spacer plate and gasket misaligned or damaged
Throttle Position Sensor Disconnected or damaged
Input Speed Sensor
  • Disconnected or damaged
  • Bolt not torqued properly
Output Speed Sensor
  • Disconnected or damaged
  • Bolt not torqued properly
Shift Solenoids Leaking
Sport Mode active Shorted switch or circuit