96 Silverado Bagged and Bodied (Part 14 A/C Box)

The heater A/C control unit has blend door actuators, evaporator, and heater core. Remove a couple of bolts from the fire wall. 10mm bolts hold it together, remove the dash to access this. Flip it over to get the orientation right. On this case itself, fan blower, air inlet, blend door that opens and closes the valve. Recommend replaces all parts since it's hard to get to.
This blend door actuator is by your foot pedals; it controls your defrost and sends air out the sides to defrost windows. The other behind the glove box is pretty challenging, but can be removed without taking the whole unit out. You can tell if the blower motor resister goes out because you'll get only high or medium high fan speed. If you're going to pull the dash out I recommend replacing all the parts. It'll cost around $500 depending on where you live and cost of parts, but it's worth doing it all together.
A couple of fasteners 7mm need to be removed to get the cover off. The heater core is clipped in. Replace the foam, too, if it doesn't come with it. A/C condenser has bolts and sealer that need to be zipped off. Pull straight up, push back and wiggle it a little bit. They can get clogged up.
10mm bolts are on the fire wall holding the whole unit in place. The defrost door has a blend door actuator. You can test it with the four wires connecting to it. Good to clean out the leaves and crud. There are 3 blend door actuators. When you take the cap off, the box gets week, so be careful.
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Due to many factors beyond the control of Scotty's Detailing , we cannot guarantee this information will work for you and any improper use of the information found on Scotty's Detailing videos. Scotty's assumes no liability for property damage or injury incurred as a result of any of the information obtained on Scotty's Detailing KZbin channel. Scotty's recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen, written about, or implied in this KZbin channel. Any injury, damage or loss that may be a result from improper use of tools, equipment, or the information contained at Scotty's detailing KZbin channel and is the sole responsibility of the viewer and not Scotty's Detailing.

[@chuckrosenbush2803]

This is what I need for my truck. I’ve been told by every mechanic that this is an extremely labor intensive job so your video is just what the KZbin certified mechanic in me needed to figure out how to tackle or if to tackle this myself. God bless and thanks for the help

[@TheStangSlayer]

This video is gold, thank you for making. The only thing I think it may be missing is that the doors themselves probably should be replaced. The seals on the edges of them tend to go out and they'll allow air around.

[@jacko4483]

Thank you so much for this. 1997 Sierra ( original owner ) and defrost has been crippled for about 5 years. Limped by through the winters ( self employed ) but now have time between jobs to deal with it. Psyched myself up changing the heater core on my son's 2001 Crown Vic last year. THAT was not fun! Going that far I guess I'll get the seat reupholstered, new carpet, door handles, inner and outer, rebuild the door hinges....... He's my buddy and after 335k he needs some lovin'!

[@temtagesson5274]

Looks like I'm going to tackle replacing heater core and the tapping bleeder door and the evaporator in the same time. Thanks for being so detailed.

[@nuclearknight8543]

One thing I’ve learned since I was six years old when I started working on these trucks is that everything goes out you repeatedly say that this goes out replace this. Well, that’s true for everything on these trucks. I’ve had to replace so many different things. Lots of people in my family on these types of vehicles and still have them today. I even have one and I have had to replace so many things by the time I’m done I pretty much have a brand new truck

[@utahyork3338]

I'm removing mine tomorrow. This video has been very helpful. Thank you.

[@brianhydrorenewal6632]

Thanks for doing all that work! 💯

[@bobbymccaskill7006]

Thanks. I didn't need to pull the box, but I was quickly able to tell which part is responsible for controlling hot/cold and go straight to it!

[@chrissavage9349]

What was it and where is it

[@bobbymccaskill7006]

@@chrissavage9349 I had a bad blend door actuator. Temp was stuck on full heat. I was able to change it by pulling the glove box and ash try and get one hand in from each direction.

[@boblinza9696]

Would love to see the vintage air set up, and the part numbers you are using. I would like to put vintage air on my truck.

[@averythomas6135]

There's only one blend door actuator, and I'm glad that ain't my truck you're working on!

[@tearsinsilence]

What ???? No sir 3 recirculation, cold hot, and distribution

[@Obs_Mafioso]

@@tearsinsilence are all 3 the same or would they be different part numbers for each?

[@bobbywomack8262]

Great information Scotty.

[@ikeanderson3174]

This is what I needed. Thanks

[@markgamble8377]

Thanks will make the job much easier

[@JCSRunur]

Thanks a bunch. Your video eliminated a lot of mystery in the removal process. I suppose I can replace the actuator coupler (which I broke a couple years ago) when the box is out.

[@rongamblin2107]

Can I do this on my 1994 GMC the Vintage Air ! Thanks Scotty ! You do it all right from your videos to your finished project.

[@paulthebeardedchap.2562]

Looks exactly like the one in my 94 burb. Should be the same in yours.

[@kennyrogers3919]

The 3 actuators are hot and cold, fresh or cabin air, and modes as in defrost, vents, and floor 👍🏻

[@tylerbarlowjr6283]

Do you know if they are all three the same part?

[@jimmygomez558]

Great video

[@revduc01]

Thanks! Great video!

[@Whatsintheshop]

Great Video man!

[@sammorgan2390]

I just replaced the evaporator core on my96 chevy k1500 without removing the dash !!

[@rgill1847]

The condenser is in front of the radiator! You're working on the evaporator core!

[@JD-526]

Where is the video on the dashboard removal

[@mtebaldi1]

how did the vigdar (is this correct spelling)AC system workout? Do you have pictures of the install and the location installed on truck?

[@Shaft-Industries]

Can you just remove the blend door section that diverts air from the defroster to the vents without pulling the whole works out of there?

[@funbranditoo4763]

SAME!!!!!

[@joefromny718]

Hey scotty, thanks for the vid. I'm modding a 96 c3500 dually. Can you tell me how many blend doors are on that unit in your vid. I found two but some say there are three. I found the one under the steering wheel and behind the ashtray. Thanks, Joe

[@joefromny718]

I read your intro and you ID it behind the glove box. Thanks ill look tomorrow.

[@THEOLYMPIAGUY360]

I wish you would of went into the blower motor box. I bought a truck and I can’t tell but it seems like someone cut out the bower motor hole. I’m trying to figure out how to tackle that.

[@1guardia]

Where can I get the whole box assembly?

[@dbeatty2495]

What is the actual name for this part??? I'm replacing mines and need it's actual name!! Please someone help me with this

[@km6344]

I enjoy your video, Even though KZbin has it where you can't find all parts of somebody's video in one area you have to actually go fishing trying to find all the different part videos somebody has! But I happened upon this video which show me well let me start by saying I have a 97 Yukon the doors that regulate the defrost to the heater to the direction of the airflow or actually either broken or fell off inside the Box closest to the gas pedal! In this video here it appears that that box can be detached independently from the hole HVAC main box that holds the heater core in AC condenser or evaporator whatever whatever that is! My question to you is if I remove the two screws directly behind the engine would I be able to detach that box closest to the gas pedal to repair those doors inside without having to remove the whole unit box itself? I wish there was a way I can find all your videos starting from one, the dash removal all the way up to this one! The spring loaded levers that control from the actuator to those doors actually fell off due to the doors inside dropping. So I'm also going to need to know how they go back on which angle because one of them actually pivots, when I go to put it back together! Your video looks as if it would be helpful to me if I was able to find all the video Parts you have and be able to watch them one after the next but KZbin doesn't have it where I can find them all very easily if at all! But again my main question is would I be able to remove just that box closest to the gas pedal with those doors in it to repair those doors or replace them if need be? Or does the other end of those doors fit in slots inside the main box? I hope I'm making some kind of sense here! Thank you

[@km6344]

sorry for the misspellings. i used the voice typing thing on this phone of my sons, and it mistyped half of what i tried to say.

[@muchgreatness7497]

Hi, 95 K1500, the only way to get hot air in the cab is on face setting. Any other settings gets room temp air. When we move the setting from face to feet or defrost, as the door is changing position, the blend door opens and air by passes the HC. Any chance you'd know why its doing that? Thanks

[@Isleepin516]

Nice what are u going to use for ur vintage air..plz do a video..I have a 2dr Tahoe and would love to get an up grade

[@cristianledesma16]

hey is i remove this will my ac lines needa be recharged

[@mtebaldi1]

yes they did need to be recharged

[@gmboi6432]

Hey man so I been having trouble trying to figure out why my 95 tahoe wont throw any heat out I replaced thermostat,heater core, heater valve,. And no luck do you happen to know what can cause it to not throw heat

[@davegibson3763]

Are all those blend door actuators interchangeable?

[@chuckrosenbush2803]

No

[@Emanuelserna1291]

What are the pros and cons of vintage air

[@ColoredCopper_6299]

great break down! I can't get power to my electric climate control box or radio on my 94 1500 PLEASE CAN YOU HELP ??

[@tomtalamantez8934]

Is that unit the same in a 96-99 OBS Chevy

[@ScottysDetailing]

Yup it is and

[@tomtalamantez8934]

@@ScottysDetailing I have a question about the operation of the hvac unit. It’s on a 99, 2 door Tahoe.

[@justin6409]

Can you talk about the vintage air box you are changing it out with or leave a link? I'm actually looking at doing the same exact thing as well as making a custom dashboard.

[@roncreach753]

you give part # for this unit

[@Jtmcguire1]

Scotty where are you located?

[@ScottysDetailing]

UT

[@Jtmcguire1]

Dang, wish you were closer. I’m in KY, definitely could use your help on my 95 Chevy.

[@moss2844]

This looks like a big mess. Lot of work. Take many hours of labor.

[@michaelmc4025]

What would cause the unit to blow HOT air constantly?

[@michaelmalcolm1748]

Louder can barely hear u

[@davidsaltz5708]

That's not a condenser it's the evaporator dummy!name you're parts property so I will know that you know what you're talking about!