Symptom Chart -- Transmission Cooling
WARNING: This page is about a different variant/trim than selected.
Symptom Chart
| Symptom | Possible Sources | Action |
|---|---|---|
| Transmission overheating | Clogged transmission fluid cooler or transmission fluid cooler tubes Bent or crushed transmission fluid cooler tubes Transmission fluid cooler thermal bypass valve stuck closed (if equipped) Vehicle has been towing a trailer exceeding the maximum towing limits of the vehicle |
INSPECT the transmission fluid cooler, transmission fluid cooler tubes and transmission fluid thermal bypass valve for damage or plugging. INSTALL new components as necessary. |
| Cooler bypass valve stuck closed | INSTALL a new cooler bypass valve. TEST the system for normal operation. | |
| Transmission fluid warmer coolant control valve is sticking | INSTALL a new transmission fluid warmer coolant control valve. TEST the system for normal operation. | |
| System leaks | INSPECT transmission fluid cooler and transmission fluid cooler tubes for leaks. SERVICE as required. | |
| Internal transmission concerns | REFER to: Diagnosis By Symptom | |
| Vibration -- a high frequency (20-80 Hz) that is felt through the seat or gear shifter. Changes with engine speed | Transmission fluid cooler tubes grounded | CHECK the transmission fluid cooler tubes. REFER to: Transmission Fluid Cooler Tubes |