Hello, I have a 2004 Avalanche 1500 and am having some AC issues. First off its not cold enough, but the lines get ice cold, so I'm assuming I have an evaporator core/orifice tube issue. Sound about right? Already checked the freon on a machine, freon level and pressures are good.
Now the sort of common question, but with a little twist. What controls the blend door actuator? Mine has the typical cold passenger side, full heat driver side issue. But I just replaced the actuator with a brand new Delco unit, and also unhooked the battery and did the reset. The issue is that as soon as I turn the climate control system on, no matter what the temp setting is, the blend door actuator goes to full heat. I even took the actuator off and watched it when I changed temp settings. It goes full hot and won't go the other way. Is there a temp sensor it may need or a new control unit? Thoughts on this one? Thanks.
Now the sort of common question, but with a little twist. What controls the blend door actuator? Mine has the typical cold passenger side, full heat driver side issue. But I just replaced the actuator with a brand new Delco unit, and also unhooked the battery and did the reset. The issue is that as soon as I turn the climate control system on, no matter what the temp setting is, the blend door actuator goes to full heat. I even took the actuator off and watched it when I changed temp settings. It goes full hot and won't go the other way. Is there a temp sensor it may need or a new control unit? Thoughts on this one? Thanks.