1972 Chevy C10 Perplexed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1963hoss · 11-24-2009, 07:57 AM

Hello. I bought my dream truck a couple of months ago. It is a driver with only small cosmetic things to replace and minor mechanical things that need work to bring it back to the original condition it was as new. I have two pressing problems maybe someone can help me with. I cannot get the a/c blower to work on high. It was fine until I serviced the a/c and then the relay went out. I replaced the relay. But now the blower only works in low and medium. All the wiring and the switch checks out ok for juice. I looked at the resistor and the motor and they seem fine. I am stumped. Next I really would like to locate a original jack for it. They are hard to find. Does anyone know where I can locate one in working order? Any help or ideas would be appreciated.

70cstjr · 11-24-2009, 10:04 AM

Welcome to the site...I will try to help you as much as i can...as for question
#1 try to go to the 67-72 forums to get the help you need..there are alot of knowledgeable people there
http://67-72chevytrucks.com/vboard/forumdisplay.php?f=3

#2 you can try, craigslist, ebay, or looking in the classifieds here you cant post for sale, but you can buy, but you are more than welcome to become a supporting member

http://67-72chevytrucks.com/vboard/forumdisplay.php?f=8

1963hoss · 11-24-2009, 11:46 AM

Thanks for the quick response. I am still trying to figure out how to use and post on the forum. I will make use of your advice and do those things.

**old Rusty C10** · 11-24-2009, 04:54 PM

welcome aboard

1963hoss · 11-24-2009, 07:07 PM

Thank you

Hottrucks · 11-24-2009, 08:36 PM

welcome

I had to change the relay mounted on the left side of the heat/ac box behind the cardboard glove box..its near the pass outside wall above the vent there is anotehr one that is inside the box behind the defrost vent splitter..wish I had some pics to show you but both parts where under $20 at napa

bruceman1968 · 11-24-2009, 08:48 PM

Welcome to the site.

1963hoss · 11-24-2009, 09:42 PM

I replaced the relay on the side of the ac box and checked the resistor inside the box. No help. The wiring checks out too. Am I missing something?

Hottrucks · 11-24-2009, 09:58 PM

I beleive that the high side of the fan is straight to the fan from the switch??? tht was the only spped mine would work when I started working on mine

11-24-2009, 11:46 AM	#3
1963hoss Registered User Join Date: Nov 2009 Location: euless texas Posts: 0	Re: 1972 Chevy C10 Perplexed Thanks for the quick response. I am still trying to figure out how to use and post on the forum. I will make use of your advice and do those things.

11-24-2009, 04:54 PM	#4
old Rusty C10 Robert Olson Transport Join Date: Oct 2002 Location: recent transplant to NC USA Posts: 20,310	Re: 1972 Chevy C10 Perplexed welcome aboard __________________ Bob 1951 International running on a squarebody chassis "If a man's worth is judged by the people he associates himself with, then i am the richest man in the world knowing some of the fine people of this board" http://67-72chevytrucks.com/vboard/a...t.php?f=25&a=9 (you can review the site rules here!) PM Me for your vehicle/parts hauling needs in the North East US or see my Facebook page Robert Olson Transport Live each day to the fullest.. you never know when fate is going to pull the rug out from under you... I hate cancer!!

11-24-2009, 07:07 PM	#5
1963hoss Registered User Join Date: Nov 2009 Location: euless texas Posts: 0	Re: 1972 Chevy C10 Perplexed Thank you

11-24-2009, 08:36 PM	#6
Hottrucks Redefining LowBudget Join Date: Mar 2009 Location: lebanon Cow Hampshire Posts: 4,538	Re: 1972 Chevy C10 Perplexed welcome I had to change the relay mounted on the left side of the heat/ac box behind the cardboard glove box..its near the pass outside wall above the vent there is anotehr one that is inside the box behind the defrost vent splitter..wish I had some pics to show you but both parts where under $20 at napa __________________ 1970 C10 CST fleetside 472 ....big dreams little cash... http://67-72chevytrucks.com/vboard/s...d.php?t=335721 SunShine Syndicate.. Mikes Sandwich Fair Run OCT 8th 2011 http://www.thesandwichfair.com/html/...auto_show.html

11-24-2009, 08:48 PM	#7
bruceman1968 Registered User Join Date: Oct 2009 Location: Tampa Bay Posts: 1,549	Re: 1972 Chevy C10 Perplexed Welcome to the site.

11-24-2009, 07:57 AM	#1
1963hoss Registered User Join Date: Nov 2009 Location: euless texas Posts: 0	1972 Chevy C10 Perplexed Hello. I bought my dream truck a couple of months ago. It is a driver with only small cosmetic things to replace and minor mechanical things that need work to bring it back to the original condition it was as new. I have two pressing problems maybe someone can help me with. I cannot get the a/c blower to work on high. It was fine until I serviced the a/c and then the relay went out. I replaced the relay. But now the blower only works in low and medium. All the wiring and the switch checks out ok for juice. I looked at the resistor and the motor and they seem fine. I am stumped. Next I really would like to locate a original jack for it. They are hard to find. Does anyone know where I can locate one in working order? Any help or ideas would be appreciated.

11-24-2009, 10:04 AM	#2
70cstjr Registered User Join Date: Sep 2007 Location: laura, ohio Posts: 935	Re: 1972 Chevy C10 Perplexed Welcome to the site...I will try to help you as much as i can...as for question #1 try to go to the 67-72 forums to get the help you need..there are alot of knowledgeable people there http://67-72chevytrucks.com/vboard/forumdisplay.php?f=3 #2 you can try, craigslist, ebay, or looking in the classifieds here you cant post for sale, but you can buy, but you are more than welcome to become a supporting member http://67-72chevytrucks.com/vboard/forumdisplay.php?f=8 __________________ PROJECT CIRCUIT RIDER Last edited by 70cstjr; 11-24-2009 at 10:06 AM.

11-24-2009, 09:42 PM	#8
1963hoss Registered User Join Date: Nov 2009 Location: euless texas Posts: 0	Re: 1972 Chevy C10 Perplexed I replaced the relay on the side of the ac box and checked the resistor inside the box. No help. The wiring checks out too. Am I missing something?

11-24-2009, 09:58 PM	#9
Hottrucks Redefining LowBudget Join Date: Mar 2009 Location: lebanon Cow Hampshire Posts: 4,538	Re: 1972 Chevy C10 Perplexed I beleive that the high side of the fan is straight to the fan from the switch??? tht was the only spped mine would work when I started working on mine __________________ 1970 C10 CST fleetside 472 ....big dreams little cash... http://67-72chevytrucks.com/vboard/s...d.php?t=335721 SunShine Syndicate.. Mikes Sandwich Fair Run OCT 8th 2011 http://www.thesandwichfair.com/html/...auto_show.html

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