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Home >> Cadillac >> 2004 >> CTS Base, 3.6 7 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission Troubleshooting >> Troubleshooting >> First Gear Only

First Gear Only

First Gear Only

Check Causes
DEFINITION: The transmission only provides first gear in Drive range. The vehicle accelerates from a stop in first gear and does not upshift.
Control Valve Body Accumulator Assembly
  • 1-2 shift control valve stuck applied
  • 1-2 shift valve stuck applied
Control Valve Body Accumulator Assembly The spacer plate or gasket are mispositioned or damaged
Shift Solenoid Valve
  • Stuck or damaged
  • Faulty electrical connection