Temp difference on 2009 GMC Sierra
When I turn my A/C on, both sides blow cool. I have the passenger side set at the same temp as the driver's side. All of a sudden, the driver's side heats up and pass side says cool. (it just does this when going down the road. When I stop, the temp on drive's side comes back down.
GMCfatboy, I am sorry to hear you are having this concern with your air conditioner. We can certainly look into this further for you. If you are interested, you can email us at email@example.com. Please be sure to include your name, VIN, address, phone number, and the name of your GM dealership. Erica Tiffany GM Customer Care