| Transmission overheating |
Incorrect transmission fluid level |
CHECK and if necessary, ADJUST the transmission fluid to the correct level. REFER to Automatic Transaxle Transmission - 6R80
. |
| Transmission fluid condition |
CHECK transmission fluid condition. REFER to Automatic Transaxle Transmission - 6R80
. |
| Incorrect transmission fluid type |
REFER to Specifications. |
| Transmission cooling system damaged, blocked, restricted or installed incorrectly |
CARRY OUT the Transmission Fluid Cooler Backflushing and Cleaning. REFER to Transmission Fluid Cooler Backflushing and Cleaning . |
| System leaks |
REFER to Automatic Transaxle Transmission - 6R80
. |
| Excessive vehicle or towing loads, severe vehicle use |
REFER to the vehicle specification manual for load and GVW information. REFER to the Owner's Literature. |
| Engine overheating |
REFER to Engine Cooling
. |
| Powertrain control system electrical inputs/outputs, vehicle wiring harnesses, PCM, Torque Converter Clutch (TCC) solenoid |
CARRY OUT On-Board Diagnostic (OBD) test. REFER to the ENGINE CONTROLS - INTRODUCTION (EXCEPT DIESEL & HYBRID)
and Automatic Transaxle Transmission - 6R80
. |
| Internal transmission concerns |
REFER to Automatic Transaxle Transmission - 6R80
. |
| Transmission fluid leak at the transmission in-tank cooler |
Transmission fluid cooler |
INSTALL a new radiator. REFER to Engine Cooling
. |
| Loose or leaking transmission fluid cooler tubes |
REPAIR transmission fluid cooler tubes. |