Stock AC mess to clean up - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71meangreenc10 · 03-16-2009, 01:45 AM

My GMC has factory air and everything is there except a few vac lines. When I select the lever to heat/defrost nothing comes out of the vents on the top of the dash, heat comes out of the ac vents. I looked under the dash at the controls and there are some vac lines that are plugged. My cables seam to be working and stuff moves on the mechanical side. My question is has anyone redone their factory controls? Where do you start? What lines go where? Go from the panel contol to outside and back. Pics would be great. I will post pics of what is suspect tomorrow.

Thanks

Smitty

cdowns · 03-16-2009, 08:08 AM

the assembly manual available from most vendors has excellent diagrams how the vaccume lines are run

KEL · 03-16-2009, 09:53 AM

http://outintheshop.com/vacswitch.html

71meangreenc10 · 03-16-2009, 04:35 PM

Thanks guy's....

Smitty

03-16-2009, 01:45 AM	#1
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Stock AC mess to clean up My GMC has factory air and everything is there except a few vac lines. When I select the lever to heat/defrost nothing comes out of the vents on the top of the dash, heat comes out of the ac vents. I looked under the dash at the controls and there are some vac lines that are plugged. My cables seam to be working and stuff moves on the mechanical side. My question is has anyone redone their factory controls? Where do you start? What lines go where? Go from the panel contol to outside and back. Pics would be great. I will post pics of what is suspect tomorrow. Thanks Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

03-16-2009, 08:08 AM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Stock AC mess to clean up the assembly manual available from most vendors has excellent diagrams how the vaccume lines are run __________________ 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

03-16-2009, 09:53 AM	#3
KEL 72 GMC Join Date: Feb 2008 Location: Wells, Maine Posts: 534	Re: Stock AC mess to clean up http://outintheshop.com/vacswitch.html

03-16-2009, 04:35 PM	#4
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: Stock AC mess to clean up Thanks guy's.... Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"



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