Search the Community
Showing results for tags 'blend door'.
Found 6 results
-
I have a broke blend door for a 08 Silverado. How hard is this to change and can you buy a new door at a part store? A mechanic is wanting to charge me a ton. I’d rather do it myself if it’s not to big of a chore. Any help is appreciate.
-
I just bought a used 2015 GMC Sierra 1500 ale crew cab. 5.3 eco tech engine. My issue is that when I press the front defrost button it just blows through my vents. I’ve read that there is blend door reset by pulling out the fuse. I’ve tried that but with no luck. Maybe someone has better instructions for it or possible the directions to replace the actuator for modes of air flow. Thank you -
2001 Tahoe Odd Blend Door Actuator/HVAC Behavior
2001EAYoung posted a question in Ask the GM Technician
My 2001 Tahoe's HVAC is acting weird. I recently checked, replaced and calibrated the temperature blend door actuator because it was grinding (split gear). So after all that was done, I noticed that I now am unable to set the temperature and have the system maintain that temperature. It does this if the system is in manual or ACC (auto mode). The system can't maintain the cabin temperature when the control knob is turned. I can feel the air temperature cycle from warm to cold to warm to cold continuously. I removed the actuator and watched the shaft rotate a few degrees when I turn the temperature knob on the control unit. However the shaft pauses a couple of seconds and then rotates a few degrees in the same direction, pauses, rotates a few degrees in the same direction, pauses, rotates...You get the idea. It is doing this without me turning the control knob. It continues this cycle until it reaches the end of it's travel and then reverses direction, doing the same cycle of rotating a few degrees, pause, rotate a few degrees, etc., until it reaches the end of it's travel in that direction. At that point it switches direction again and continues this endless cycling. Sometimes when the A/C is running, the temperature will remain on full cold unless the control knob is turned to full hot. Anything less than full hot and the actuator begins this back-n-forth cycling of hot, cold, hot. It does this regardless of manual or auto climate control. I also replaced the cabin temperature sensor, above the driver's seat in the headliner. All the remaining controls function correctly: mode actuator switches from floor to vents to defrost, the fresh/recirculating air actuator switches normally, all fan speeds are good. I just can't set the temperature and have the system maintain that temperature with the temperature control. The system used to work correctly, either in manual or ACC (auto climate control), blending cold and warm air as the temperature control was rotated to the desired setting. Is the control head bad? Did I get a bad actuator? Is there a climate control code that needs to be cleared? -
I have a 1999 chevy silverado 2500hd with a 6.0 The air was stuck on cold so I looked at the actuator and it is working properly. Both hoses in the engine bay are hot. I took off the actuator and tried moving the blend door and it is stuck. Any way to free the blend door so it will open with the actuator?
-
Anyone know a cheap fix for a blend door acuator? 2003 yukon XL. front dash and floor vents blow cool air when heat is on. Front defrost does not work. Rear heat works fine. thanks Sean 2003 GMC Yukon XL 160k miles. (great truck BTW)
-
Hey guys, after 3 years of going without my old Silverado (and driving a foreign family sedan) and constantly scanning dealers, I finally made my move on a 2015 Silverado 4wd crew cab LTZ! It's the first vehicle I've owned under 70k miles so naturally I can't stop staring at it...Hell, if I could, I'd park the damn thing in the living room so I can watch it in my sleep! Anyway, I'm new to this website too and I already have 1 thing that is off about this truck (its the same thing that happened to my '06 Silverado). Maybe someone could point me in the right direction where to ask or if its been discussed before... I've tried researching it, but cannot find anyone that's noticed this or if its a problem. When the AC is set to top vents only, the bottom vents are still partially open. When I select the blend option, I can notice the bottom vents open a little more. So the blend door actuator is working, but not fully closing off and damn that AC is nice and cool, but too cold for my feet! Do I have a defective actuator or are they supposed to always blow air towards the floor boards? I hate the idea of bringing out duct tape on a brand new LTZ, but hell I'm the one who's hot (literally and figuratively) and not my feet!
