Chevrolet Low Cab Forward 2016 Manual page 207

206 Driving and Operating
Actions that Can Lead to a Breakdown with an Automatic Transmission
Actions that can lead to a breakdown
Stopping the vehicle on an uphill road with the selector lever in a position
other than N or P, the accelerator pedal pressed, and the brakes not
applied. Pressing the accelerator pedal and brake pedal at the same time.
Placing the selector lever with the accelerator pedal pressed and the
engine speed high.
Operating the selector lever into P before the vehicle has completely
stopped.
Turning off the engine control switch while driving. Driving with the selector
lever in the N position on a long downward slope. (This is dangerous due to
the lack of engine brake).
Breakdown symptoms
The transmission fluid overheats.
The transmission gears are
overloaded.
The parking mechanism will be
damaged.
The transmission is not properly
lubricated.