What is this part called? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71CHEVYSHORTBED402** · 09-23-2015, 04:02 PM

It's the ghost image above number 15....... Number 15 attaches to it. It's for the Inside AC to Defroster control. I have a question about this unit, and would like to sound nearly intelligent when I ask. http://www.lmctruck.com/icatalog/cb/full.aspx?Page=167

Thank you

Davidf · 09-23-2015, 04:23 PM

Good question. It function is to divert air from floor to defrost vents. So, I would call it the "heater/defrost diverter box". Not reproduced the best I could determine.

**71CHEVYSHORTBED402** · 09-23-2015, 04:40 PM

Quote:

Originally Posted by Davidf

Good question. It function is to divert air from floor to defrost vents. So, I would call it the "heater/defrost diverter box". Not reproduced the best I could determine.

Exactly. Seems like a good label............ I've looked in a few places. They seem to reproduce everything else. I think I'll call mine a "Inside Air/Defroster Selector", beings that's consistent with how the A/C/heat controller is labeled.

Davidf · 09-23-2015, 04:46 PM

I think the reason the box is not reproduced is that it is made from sheetmetal and not in a location that would make it susceptible to rusting. So, the box is durable and thus the replacement market/demand small. Most/all the other parts are plastic and subject to cracking/breaking/deforming and thus market/demand is high.

**71CHEVYSHORTBED402** · 09-23-2015, 04:47 PM

Quote:

Originally Posted by Davidf

I think the reason the box is not reproduced is that it is made from sheetmetal and not in a location that would make it susceptible to rusting. So, the box is durable and thus the replacement market/demand small.

Which leads me to my next question. Don't want to mess something up. I'll put it in another thread.

**leddzepp** · 09-23-2015, 04:51 PM

Diverter box. They come up for sale on the parts board, see NOS units on eBay, and Brothers used to sell them, not sure if they still do or not.

cdowns · 09-23-2015, 05:22 PM

In my 71 &72's with ac they were made out of plastic from the factory and have been available at least 20 years or so in repops

**71CHEVYSHORTBED402** · 09-23-2015, 11:56 PM

The "diverter box" for the "inside" air control is steel. If you search for diverter box, the new ones appear for the A/C. From a limited search (including Brothers), these may no longer be reproduced. Note: I don't need one, just wanted to know what called.

The diverter box for the A/C and the "S Duct" are plastic. You can locate repro.

cdowns · 09-24-2015, 06:59 AM

I do believe that the item #12 is called the diverter box because of the flspper valve enclosed in it that diverts the air where you want it to go

ERASER5 · 09-24-2015, 11:06 AM

I think he is talking about the grayed out un-numbered and un-named part in that diagram.

EARNHARDT#3 · 09-24-2015, 11:52 AM

Nowadays this part is called a "blend door"

mrein3 · 09-24-2015, 01:37 PM

the grayed out thing - which I think is what you are asking about not only is inside and durable like Davidf pointed out, but it is the same on AC and non-AC trucks so EVERY one out there has one making any part-out a potential donor.

**71CHEVYSHORTBED402** · 09-24-2015, 06:26 PM

The flapper on the grayed out image (""Inside" Air/Defroster Selector Duct") has a piece of rubber (approx 3" wide x 5" long x 3/16" thick) mounted to the flapper with three staples. This piece runs on both sides of the flapper. It's likely the rubber is cracking on yours, right where it bends.

Could try locating a piece of rubber that's durable and flexible (reference runs on both sides). Could make due with two rubber pieces instead.

I likely won't take it off the hinge. Not worth chancing a scratch or break. I don't have staple gun to go through that anyway. Doesn't mean I can't replace it. It's that or call it a day already. May not live long enough to require a replacement.

**71CHEVYSHORTBED402** · 09-24-2015, 06:45 PM

BTW, my attempt to sound nearly intelligent backfired. I just wasn't wearing my glasses.

Andy4639 · 09-24-2015, 08:22 PM

The part you are talking about is to direct air either for the floor heat are for the defrost to windshield. The one in my 71 AC truck is metal and if I'm not mistaken they are the same thing on either AC trucks are just heat.

09-23-2015, 04:23 PM	#2
Davidf Registered User Join Date: Nov 2014 Location: Austin Posts: 749	Re: What is this part called? Good question. It function is to divert air from floor to defrost vents. So, I would call it the "heater/defrost diverter box". Not reproduced the best I could determine.

09-23-2015, 04:46 PM	#4
Davidf Registered User Join Date: Nov 2014 Location: Austin Posts: 749	Re: What is this part called? I think the reason the box is not reproduced is that it is made from sheetmetal and not in a location that would make it susceptible to rusting. So, the box is durable and thus the replacement market/demand small. Most/all the other parts are plastic and subject to cracking/breaking/deforming and thus market/demand is high.

09-23-2015, 04:51 PM	#6
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,984	Re: What is this part called? Diverter box. They come up for sale on the parts board, see NOS units on eBay, and Brothers used to sell them, not sure if they still do or not. __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

09-23-2015, 05:22 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: What is this part called? In my 71 &72's with ac they were made out of plastic from the factory and have been available at least 20 years or so in repops __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-23-2015, 11:56 PM	#8
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,128	Re: What is this part called? The "diverter box" for the "inside" air control is steel. If you search for diverter box, the new ones appear for the A/C. From a limited search (including Brothers), these may no longer be reproduced. Note: I don't need one, just wanted to know what called. The diverter box for the A/C and the "S Duct" are plastic. You can locate repro. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 09-24-2015 at 12:16 AM.

09-23-2015, 04:02 PM	#1
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,128	What is this part called? It's the ghost image above number 15....... Number 15 attaches to it. It's for the Inside AC to Defroster control. I have a question about this unit, and would like to sound nearly intelligent when I ask. http://www.lmctruck.com/icatalog/cb/full.aspx?Page=167 Thank you __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 09-24-2015 at 06:44 PM.

09-24-2015, 06:59 AM	#9
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: What is this part called? I do believe that the item #12 is called the diverter box because of the flspper valve enclosed in it that diverts the air where you want it to go __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

09-24-2015, 11:06 AM	#10
ERASER5 Registered User Join Date: Jun 2006 Location: Indiana Posts: 4,859	Re: What is this part called? I think he is talking about the grayed out un-numbered and un-named part in that diagram. __________________ '70 GMC C1500 LWB Power disc brakes. WooHoo! Posi 6 Lug Dana 60

09-24-2015, 11:52 AM	#11
EARNHARDT#3 Registered User Join Date: May 2014 Location: PA Posts: 1,417	Re: What is this part called? Nowadays this part is called a "blend door" __________________ 1967 C10, LWB, 250, Powerglide, PS, PB, 3/4 STATIC DROP

09-24-2015, 01:37 PM	#12
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	Re: What is this part called? the grayed out thing - which I think is what you are asking about not only is inside and durable like Davidf pointed out, but it is the same on AC and non-AC trucks so EVERY one out there has one making any part-out a potential donor. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

09-24-2015, 06:26 PM	#13
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,128	Re: What is this part called? The flapper on the grayed out image (""Inside" Air/Defroster Selector Duct") has a piece of rubber (approx 3" wide x 5" long x 3/16" thick) mounted to the flapper with three staples. This piece runs on both sides of the flapper. It's likely the rubber is cracking on yours, right where it bends. Could try locating a piece of rubber that's durable and flexible (reference runs on both sides). Could make due with two rubber pieces instead. I likely won't take it off the hinge. Not worth chancing a scratch or break. I don't have staple gun to go through that anyway. Doesn't mean I can't replace it. It's that or call it a day already. May not live long enough to require a replacement. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025 Last edited by 71CHEVYSHORTBED402; 09-24-2015 at 06:43 PM.

09-24-2015, 06:45 PM	#14
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,128	Re: What is this part called? BTW, my attempt to sound nearly intelligent backfired. I just wasn't wearing my glasses. __________________ Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assm. guide "kit" for restoring it from ground up. With assys, the guide accts for 1000s details such as OEM identifications& part numbers, written in short order. 700+ images include assm, illust., charts, and points of interest. Much of the info. applies to all 67-72 GM trucks, and to a lessor degree all 67-72 GM vehicles. My build thread, and more on the guide https://67-72chevytrucks.com/vboard/...d.php?t=730025

09-24-2015, 08:22 PM	#15
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: What is this part called? The part you are talking about is to direct air either for the floor heat are for the defrost to windshield. The one in my 71 AC truck is metal and if I'm not mistaken they are the same thing on either AC trucks are just heat. Attached Images __________________ 1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs.



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