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.

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.

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 

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. 

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

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: help!!!!!! is there a way to manually lock the hvac actuator on hot in my chevy blazer ' 99

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?

John Artuso: Will this procedure work on my 97 K1500 ? .. maybe a stupid question but ya never know :) My issue is that I have air coming thru on my body vents when all I want is the defrost to work I changed the control panel last week Thanks John

jhowell928s: Actually, what you were saying at the 7 minute mark about not running the motor while it's off the box isn't true. The motor won't turn past a certain point on or off the box. I've done it before when I was trying to diagnose the problem in mine. My problem was actually the control panel wouldn't "tell" the motor to turn far enough to make it blow out the dash vents only. For a while I just pulled it off and if I wanted to switch the position I'd reach under the dash and turn the lever.

Michael Madsen: Thanks a lot, I am diagnosing my heating issues right now and I am pretty sure it is the blend door, but I have a question. So when I shift from inside circulation to out side air I hear everything shifting and working fine. Is that what the blend door does? How do I check if it is the blend door or something else. I didnt quite understand what part you where referring to that sits underneath the controls on the dash board.

Jim Lowey: Hello, I have a 1998 K1500 and recently replaced my heater blower fan. Since doing so, the defrost does not blow very hard on the passenger side, probably only about 25% of what it did before changing out the motor. All other functions work great and normally. Just the Defrost is having this issue. Any ideas of what would have caused this and what I can try to repair? I did notice that the rubber cover that encloses the blower was a real pain to get back on after replacement. Thanks!

SuperHBlaze: Is this is the same for a non- A/C unit?...Can't find a cable driven door actuator (if that is what I am looking for) what I find are all equipped for a/c and are electric. This truck is a '97 and was special order with no air conditioning and the door actuator was missing when it was bought a few months ago and noticed only now. I do not have a part number either to research it at different sites.....please help!

dee keller: I have 95 WT1500 and I have HOT to blow out of the vents and floor but when I change to defrost it goes to AC cold with the temp set on hot. Have you had any dealings with this?

joanben1977: Just changed mine on my 97 Z71. This video was very very helpful. Thank you sir.

Hannah Davey: my 2004 Chevy SUV has the dual controls where the driver side will suddenly blow Screaming hot air in the summer, (when you need AC). it sounds like my issue might be the "blend door" - does that sound like a good guestimate to you?

WhoSaidTyler: Yes. They are known to burn up and when that happens they either burn up partially or all the way. The way to diagnose this is to use a good digital multimeter on the correct scale(usually 20v) and disconnect the connector at the actuators. With the key on and the HVAC controls being operated, you should see voltage changes at the connectors. If you don't then you can be pretty confident the panel is DOA. Check G M parts direct.

WhoSaidTyler: You are welcome, glad to help.

arkansasbrent: My yukon has a similar issue. I have to turn the vent on max and turn the selector knob back and fourth sometimes to get it to switch vents. Is that a sign i need a knew one of these?

WhoSaidTyler: You have actuators just like the later trucks. I had a 1993 Chevy that was my favorite of all.

WhoSaidTyler: It has to move more than that. That one is the blend door actuator. If you remove it and work the blend door by hand you'll get cold or hot air.

WeBleedCrimsonRTR: sorry to sound like an idiot but where is this lever?

WhoSaidTyler: I'm glad to help! It has shocked me how many people seem to be having problems with these. However, it's an easy fix after you understand what those little troublemakers do.
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