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Home >> Pontiac >> 2009 >> Solstice Base, 2D Convertible, Automatic >> Repair and Diagnosis >> Transmission >> Hydraulic Diagrams >> Automatic Transmission - 5L40-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis >> Diagnostic Information And Procedures >> No Reverse or Slips in Reverse

No Reverse or Slips in Reverse

Check Causes
DEFINITION: A large engine RPM increase is noted with little or no vehicle rearward speed increase during the following conditions:
  • The engine is running.
  • The transmission is in Reverse range.
  • The vehicle is stopped or moving slowly.
  • The vehicle brakes are not applied.
  • The throttle is opened 25 percent or greater.
Direct and Reverse Clutch Assembly
  • Damaged reverse clutch housing ball check valve
  • Damaged or cut piston
  • Damaged or worn clutch plates
Control Valve Body Accumulator Assembly
  • Reverse lockout valve stuck
  • TCC PWM solenoid valve leaking
Selector Lever Adjustment