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Home >> Cadillac >> 2004 >> CTS Base, 3.2 N >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Automatic Transmission Troubleshooting) >> Troubleshooting >> No Drive in All Ranges

No Drive in All Ranges

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No Drive in All Ranges

Check Causes
DEFINITION: A large engine RPM increase is noted, with no vehicle forward speed increase, during the following conditions:
The engine is running.
The transmission is in Drive range.
The vehicle is stopped or moving slowly.
The vehicle brakes are not applied.
The throttle is opened 25 percent or greater.
Forward Clutch Assembly
  • Damaged or worn clutch plates
  • Damaged or cut piston
  • Damaged or stuck ball check valve
Forward Clutch Sprag
  • Damaged sprag
  • Worn or pitted inner race
Fluid Pump
  • Damaged vanes
  • Missing slide spring
  • Fluid pump screen assembly plugged or damaged
  • Fluid pump rotor guide omitted or misassembled
  • Fluid pump rotor cracked or broken
  • Porosity in fluid pump
  • Fluid pump surfaces not flat
  • Excessive fluid pump rotor clearance
Low Clutch Sprag
  • Damaged sprag
  • Worn or pitted inner race
Input and Reaction Carrier Damaged or worn gears