space ace Posted July 14, 2011 Report Posted July 14, 2011 I have a 2001 Grand Prix that when A/C is on and temp controls are set to cold, will blow hot air from the driver's side and cold from passenger side. I know it has the dual climate control and I have checked the R134 level and it is good. I also replaced the actuator on the driver's side, but it was not the problem. I tried disconnecting the battery for 15+ minutes, but nothing changed. I can move the driver's side temp control back and forth several times and the actuator will then move to the cold setting for a ~5 seconds, then go right back to the full heat setting. I have taken the actuator off and manually moved the vent door to the cold postion to get the A/C to come out the driver's side until I can find out WHAT is causing the issue. Any ideas?? Quote
runt Posted July 15, 2011 Report Posted July 15, 2011 http://www.w-body.com/showthread.php/22011-%282nd-Generation%29-FAQ-Help!-My-HVAC-is-cold-on-one-side-hot-on-the-other! Try those suggestions?? Quote
space ace Posted July 15, 2011 Author Report Posted July 15, 2011 I think a covered all those suggestions in the threads. I replaced the actuator and it still responds the same way. My old actuator did not have a cracked gear either, so I think the actuator is not the problem. I have removed it now and manually moved the blend door to cold position. I can moved the temp control lever back and forth several times (then leave it in the cold position) and the actuator will move from the hot position to the cold position, but then go right back to the hot position. Any more suggestions?? Quote
Z34guy Posted July 15, 2011 Report Posted July 15, 2011 [video=youtube;IRXon0jOiWQ]http://www.youtube.com/watch?v=IRXon0jOiWQ obligatory Quote
88red4cyl Posted July 15, 2011 Report Posted July 15, 2011 Other than the actuator being bad, I think about the only other thing to check is the HVAC control unit... If it's changing to cold after you fiddle with it and then switching immediately back (indicating the actuator is functioning) it kind of sounds like something is screwy in the control unit to where it thinks the switch is on hot for some reason... Quote
runt Posted July 16, 2011 Report Posted July 16, 2011 Yeah. I would try to find a JY model and see if that fixes the problem. Could easily be something electronic at this point that you haven't already replacd. Quote
space ace Posted July 20, 2011 Author Report Posted July 20, 2011 I will try to get into the control unit and see if that is the problem. Thanks Quote
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