automatic transmission
car downshifts for no reason, (flat road, constant speed etc seems like OD switch on shifter colum is acting on its own, had AT serviced recently, doesnt fix problem.Sometimes when I accelerate the car wont automatically upshift, I have to take my foot all the way off the gas to get it to shift to higher gear Seems like it may be electrical instead of mechanical problem. The problem is erratic, doesnt occur all the time or under same conditions. Any familiarity with this problem on these models?