If heater is off, car goes in gear fine. When heater is on, it won't come out of park? What on earth could cause this? I'm not sure if it is electrical related to the heater fan because it does the same thing when the A/C is turned on. If you turn on the A/C the vehicles transmission won't engage in any gear either. So A/C and Heater engagement causes the transmission to keep from shifting. The vehicle shifts fine while driving and you can use A/C or Heater. Put it in park and it won't re-engage until you turn off the A/C or Heater
have the same problem?
Wednesday, June 5th, 2013 AT 9:18 AM