Am I missing something?? Defroster duct - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JJorgensen52** · 11-20-2014, 11:38 PM

I can't get this figured out, and this is the third truck I've had issues with, help!

I went tonight to replace the defrost lever in my heater controls - which went great until the pot-metal stud holding the levers on the back of the face broke, so now tomorrow I'm drilling the face for screws.

Anyway, when I look up under the dash, the passenger's defroster duct is off its outlet on the heater box, and the blower control cable (goes to the bottom of the heater box from the vent lever) goes right over the outlet, where the hose should be. If I push it out of the way (front or back) to install the duct, the lever gets really stiff. What gives??

My '69 K10 and the '72 C30 to K30 build I did were both like this, too. Where is that cable supposed to go, and why doesn't it want to go there?

Andy4639 · 11-21-2014, 05:32 AM

I'm not going to say it's the right way to do it but I got a longer cable off another controller I had gotten out of a junk dash. That way it wasn't binding up like yours. I also soaked them really good before I installed them.

Another suggestion take the keepers on both ends of the cable loose and get them as close to the ends as possible this will give you a little more adjustment also may are maynot be enough though.

**JJorgensen52** · 11-22-2014, 12:52 AM

Quote:

Originally Posted by Andy4639

I'm not going to say it's the right way to do it but I got a longer cable off another controller I had gotten out of a junk dash. That way it wasn't binding up like yours. I also soaked them really good before I installed them.

Another suggestion take the keepers on both ends of the cable loose and get them as close to the ends as possible this will give you a little more adjustment also may are maynot be enough though.

You know what? This is simple and elegant and makes perfect sense, and I never would have though of it

I will have to remember to grab the next long control cable I run across!

Andy4639 · 11-22-2014, 01:44 AM

Glad I could help.

**71CHEVYSHORTBED402** · 11-22-2014, 02:03 AM

Funny. I think I remember seeing the same thing on mine. I have to put new duct hoses in anyway. Gee, can't wait.

benner · 11-22-2014, 11:11 AM

Quote:

Originally Posted by 71CHEVYSHORTBED402

Funny. I think I remember seeing the same thing on mine. I have to put new duct hoses in anyway. Gee, can't wait.

Me too on both...I guess. My ride has many little things that could be replaced and the money goes somewhere else way before it can trickle down to the last vehicle in the lineup! when I want defrost I move lever @ heater back & forth, w/o hoses, the air gets there sometimes and very slowly (laughs). Like I've said on other posts it is a beater/work truck, gets wood and hauls trash to dump! LoveMyTruck. Bam.

11-20-2014, 11:38 PM	#1
JJorgensen52 Simple? What's simple? Join Date: Apr 2007 Location: Southeast CT Posts: 1,472	Am I missing something?? Defroster duct I can't get this figured out, and this is the third truck I've had issues with, help! I went tonight to replace the defrost lever in my heater controls - which went great until the pot-metal stud holding the levers on the back of the face broke, so now tomorrow I'm drilling the face for screws. Anyway, when I look up under the dash, the passenger's defroster duct is off its outlet on the heater box, and the blower control cable (goes to the bottom of the heater box from the vent lever) goes right over the outlet, where the hose should be. If I push it out of the way (front or back) to install the duct, the lever gets really stiff. What gives?? My '69 K10 and the '72 C30 to K30 build I did were both like this, too. Where is that cable supposed to go, and why doesn't it want to go there? __________________ CURRENT '50 GMC 100 shortbed Gen IV 4.8 LS - 4L65E (Secret truck, Shhh!!!) Build '63 Buick Wildcat Coupe 401ci Nailhead (Very much in pieces) Photos '66 Impala SS convertible 327-QJet-glide (4 speed swap one of these days...) Photos '69 CST/10 4x4 SWB Stepper 350 2bbl - NV4500/NP241C (Broken Truck!) '72 Sierra Grande 2WD LWB fleetside 350-TH350 Refresh '99 K2500 Silverado RCLB 5.7 Vortec - NV4500/NP241C (Daily) '99 K2500 Suburban 7.4 Vortec - NV4500/NP246 (still working out the bugs) SOLD '71 Custom/10 2WD LWB fleetside - '72 GMC K/3500 Dually (Sold to redryder)

11-21-2014, 05:32 AM	#2
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Am I missing something?? Defroster duct I'm not going to say it's the right way to do it but I got a longer cable off another controller I had gotten out of a junk dash. That way it wasn't binding up like yours. I also soaked them really good before I installed them. Another suggestion take the keepers on both ends of the cable loose and get them as close to the ends as possible this will give you a little more adjustment also may are maynot be enough though. __________________ 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.

11-22-2014, 01:44 AM	#4
Andy4639 Old member Join Date: Jan 2002 Location: Liberty, & Garden City S.C. , U.S. Posts: 19,936	Re: Am I missing something?? Defroster duct Glad I could help. __________________ 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.

11-22-2014, 02:03 AM	#5
71CHEVYSHORTBED402 Senior Member Join Date: Feb 2009 Location: Northern Nevada Posts: 7,188	Re: Am I missing something?? Defroster duct Funny. I think I remember seeing the same thing on mine. I have to put new duct hoses in anyway. Gee, can't wait.



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