I have the 94 grand cherokee, 4.0. My jeep use to tell me my drive to empty, mpg etc. The temperature is correct, but the other is at zero, is there a way to reset this. I have held the two buttons in until it reset. But it didn't do the trick. I did replace the pcm a while back but i dont remember if it work before i switched it. I know it is silly thing to worry about but i would like to know how to fix it. Any input would be very thankful.

 

Has anybody had this problem?