For 1990-2009 cars

Check | Causes
--- | ---
DEFINITION: A large engine RPM increase is noted in fifth gear, Drive range, with little or no vehicle forward speed increase. First, second, third gear and fourth operation are normal. Shifts into fifth gear are soft or do not occur.
Control Valve Body Accumulator Assembly |

• | 4-5 SS valve stuck On

• | 4-5 shift valve stuck applied

• | 4-5 shift control valve stuck applied

Overdrive Clutch |

• | Damaged or cut piston

• | Damaged or worn clutch plates