Chevrolet C/K Truck Mode And Blend Door Actuator Replacement




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bg147: Hmmm. I have a 1996 C1500 and when I switch to defrost the sound of the fan changes and I can hear the air blasting but the air only comes out from below. Just a tad comes through the defroster which is a huge issue in the winter. 

Nathan Zupancic: Hannah, on the dual control climate controls, if one side still blows cold and the drivers side blows hot, you need to replace the actuator that is for the drivers side. It is actually just to the right of the transmission hump under the dash. I need to replace one in my truck, but I've been told it is a half hour job.

Brian Jones: First you said it was a factory part then you said someone changed it.which one is it?

Kyle Spitnale: Mine only coms out the defrost and a little out the top vents all the time no change nuthing on the floor what do I have to replace and where is it located thanks 

claudeham9: i have a 2000 chevy tahoe it reads 200 - 210 but no heat is this whats wrong with my truck?thanks in advance

SuperBakery10: Great video. My parent's 99 suburban the air is doing exactly this. My dad thinks the control is crap but now I'll tell him about this.

Chris Linnon: Great educational video. Than you very much!

jjsjeffjjsjeff: I'm sure this is the problem on my 2004. No heat in the winter. Just enough through the defrost to keep the fog off the windows, but that's about it.

Accumulator1: My blend door actuator went out in the middle of hot and cold selection. The AC would not blow very cold and then winter hit and froze my ass off because no hot air. That flap door was not closed to allow heat to be drawn from the heater rad. Took that lousy bulky plastic cover off the bottom and the actuator was wedged close to the carpet floor. It did not cost me anything to repair the actuator. I took it apart for inspection. The main diode, a 1N4004 was faulty. I just happen to have one in my parts supply to swap out. Next main task was to realign the gears in the actuator. Took forever to get it indexed again. Finally got it like it suppose to be and installed it. Works perfect again. A pain in the ass was to put back the large bottom cover. 

Danny Gelatt: Thank you! this was incredibly helpful! I have a 1997 Suburban. My modes are working fine but temp control is not so I'll be looking to replace the Blend Door Actuator this weekend :)

Brian Jones: I did some checking and my part# is Dorman 604-116.

bud moore: please help i have a 95 chevy diesel air coming out floor only i can take that motor off that u changed in the video and work the lever manually and it works right but i put the motor on everything back to the floor i tried new motor and a new head unit and no change everything out floor

Brian Jones: Lol I keep hand sanitizer in my truck too.

Brian Jones: you said the 2 actuators are the same identical part.I don't know where you are from but here in south georgia they are not the same.different part #.one is $32.00 the other is $65.00 so just sayin.

Louis Roman: Well done, helped out a bunch, thanks for taking time to make video.

TheTANGOWHISKEY: Great video man. Thanks for all the info in one place!

newportndn9799: hey bud, changed the actuator and it is blowing cold air FINALLY, but it seems to depend if I am on the gas or in idle. up an down

jbyrd3304: I have a 2005 gmc 1500 pick up. I will be going down the road with cold air then the driver side will start blowing hot but the passenger side will be cold. I turn truck off and back on then everything works fine again. My diagram shows four actuators I replaced the one by drivers right foot and that did not fix the problem can you please tell me which one it is. Gmc will not help me. THANKS

newportndn9799: hey bud, I sure do appreciate the info!!!!! I was about to pay Firestone 300 after I paid them 142 already!!!!!!!! But my question is what if what is the housing is broken??? And why is my a/c button is not lighting up?

dom angelo: I have a 2001 Chevy blazer zr2 and my control button works fine but when I switch it to the floor it starts making this noise sounds like air but it's only when I switch it to the floor.

Kyle Spitnale: Mine only coms out the defrost and a little out the top vents all the time no change nuthing on the floor what do I have to replace and where is it located thanks 

Paul: Thanks man! Sometimes my truck will stay on the floor and not come our then vents and have to wait like 5 mins and a tap on the dash makes it come kit the Pannel

tjconway6462: Ok, thanks. I understand the procedure, just can't seen to get any tools on the bolts to remove the actuator. Its a tight area.

Aaron Hinojos: thank you sooooo much for this video!!!! had nooooo idea what so ever what controlled were the air went .... didnt even know what to type to look for lol... just googled some stuff like blower motor some how ran across your video>>> watched it .. ran to orileys ... bought the part .. put it in.. worked great!!!!!...... great video man!!! thank you!

WhoSaidTyler: Awesome!

WhoSaidTyler: You may try taking out the accessory plugs there in the center. Be careful though, that plastic isn't strong.

WhoSaidTyler: jeez.."blend" door.

WILLIAM CORLEY II: Thanks for the video it was very helpful with changing my 02 Tahoe mode actuator.

WhoSaidTyler: Most likely the panel. I would confirm system charge and also see if a command is being sent to the compressor to turn on during the times that it isn't responsive before you spend the money for a control panel. You may also be able to repair the panel yourself.

gazzellanorm: @WhoSaidTyler, Thanks I'll try to dismount and block.

419MrSmith: Both my actuators tend to have a mind of their own and move whenever they please. I was thinking about replacing the one at the blend door until I realized the one on the floor moves funny too. Maybe I just need to replace the control unit. My system is pretty much the same as yours, it's a 95 gmc. Nice vid, thanks!

WhoSaidTyler: Blend door controls hot or cold...your problem sounds like the mode door actuator which is the one I replaced in this video. Rule about not running them detached from the box still applies.

FABRIC8TIONUNLIMITE1: My truck (only when I turn it on or off) I get a repetitive CLICK CLICK CLICK down by the heater fan, I found a actuator on the left side of the fan and unplugged it & it stopped. I just replaced the heater fan the other day cause it was squealing like a banchie & inside the box I saw a flap, I sure that was the noise. Is that the third actuator? Have you ever heard of this prob. ?

osito6549: I have a 1998 Chevrolet S-10 reg. 4 cyl. I don't get any air out of the floor setting. It only blows out of the defrost. heat works fine everwhere, except floor. NOTHING blows out the floor vent. If I put it on floor, it blows out the dash Any idia or suggestion? Thanks

chrisflowers1984: I have a 99 surburban and the air is blowing to the floor and now the control panel out to it want light up nothing so do I need to.replace both

Jpait94: I have a problem with my 96 sierra my AC went out and Idk why. I think its my AC control unit bc I had problems with it before and to turn the lights to the AC and recirculate buttons off I would have to wiggle the power knob to the unit. All it does now when I turn my ac on is it blows air. not cold or hot it blows down to the floor and out the side vents I noticed that it blows out my main vents for a second when I turn the AC off for a second and then back on again. Thank you for any help!

WhoSaidTyler: You simply turn the actuator in your hand until you can slide it on the shaft. DON'T try to manually turn the inner workings of the actuator.

sbeer6er: It didn't engage at all, but now when I hooked it up to force it, it slaps. I'm pretty sure it will break something in there now, lol.

WhoSaidTyler: @gazzellanorm Ah. Well just remove the appropriate actuator(on a full size it is the one mounted front and center) and use something like strong tape to hold the shaft in the right spot. Remember to not operate the new actuator until it is mounted to the HVAC box and don't turn the actuator by hand.

Mookie Smith: i had same problem and my actuator behind cigarette ligher was bad ,, all the mechanical parts worked but i open it up and one of the wheels and axles was split in half and that half was wut i needed to reach the cold setting

jhowell928s: When you pull off the motor that selects which vents the air comes from, behind it you'll see a white lever/knob. It's actually what the motor uses for selecting positions.

TheDeathatron: I have a 99 same body style as yours. My ac works but doesn't get very cold. The freon levels are normal. Do you think it's the blend door going out that's mixing warm/cold air? Also there's a intermittent click every 30secs near that area.

713rmx: Thank you very much for this video!! Now I know what's wrong with my ac!! Will be fixing it this weekend.

WhoSaidTyler: No, I'm sorry I don't, but it's the same procedure. Sytem off, ignition off, remove fasteners. Replace with new part by rotating shaft to enable actuator to slide on and bolt in. Do not operate actuator with it off the box, ever.

John Sigler: I am new at posting comment so forgive me as i learn.The syndicated brothers car/talk could not help a lady with that knocking noise. It still occurs as you walk away from the car.or just fooling around with the control system knobs and features.Any way your video enabled me to have her guns loaded when dealing with the service righter,they messed her around so much she did not have the extended warranty But the coded the repair and G M ate it near 1k in the book.Thank you so much with all yado

stacie Phillips: Thank you so much! My son now has AC and Heat and is no longer stuck on defrost!

Gearheadtom: @WhoSaidTyler I checked mine, and it doesn't seem to even turn quite 1/4 turn all the way from one knob position to the farthest. I'm guessing it's supposed to move more than that.

ghtowagon: Did yours have a SLOW engagement of the change over from the dash defrost vents to the upper front vents? Mine does it, The flapper door is slow to change and when it does it goes "SLAP"

jchavez8807: I have 2004 chevy and the drivers side goes hot about every other day, passenger side stays cool...I'm guessing this is the blend door problem, correct? Is the blend door just as easy to change?

magzxi: since you pointed out that both actuators are the same i was able to swap them around and determine that tje conyrol unit was bad. tjanks!
Rating:
Chevrolet C/K truck mode and blend door actuator replacement 4.5 out of 5

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Chevrolet C/K truck mode and blend door actuator replacement