91 sububan ac controls cable or electric, and rear ac question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Hubscrub · 04-25-2018, 05:59 PM

I've search but can't find. My (new to me ) 91 suburban is blowing floor only are the ac,heat controls still cable operated like the other square body's or are they electric like the 90s trucks? Also is the rear ac switch fixable mine won't work on high unless I hold it in. Don't seem to be available new.

Ski-me · 04-26-2018, 10:00 AM

Cable and Vacuum like the old body style. There is also a plastic piece on the door actuator that tends to break easily.

**kwmech** · 04-26-2018, 10:58 AM

Check the vacuum hose up on the firewall near the distributor. Just a small plastic hose that goes through the firewall.

Hubscrub · 04-26-2018, 05:26 PM

Thanks yall, when it quits raining I'll dig in.

Hubscrub · 04-28-2018, 09:03 AM

Found a rotted vac line fixed problem think my duct work is stopped up on vent. The passenger door vent blows like a hurricane and little pices of looks like hood insulation blowing out of it rats might have been in there? The other vent blow a little defost blows strong. Ths burb did sit for a while found little evidence of critters in engine bay.

04-25-2018, 05:59 PM	#1
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	91 sububan ac controls cable or electric, and rear ac question I've search but can't find. My (new to me ) 91 suburban is blowing floor only are the ac,heat controls still cable operated like the other square body's or are they electric like the 90s trucks? Also is the rear ac switch fixable mine won't work on high unless I hold it in. Don't seem to be available new. __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

04-26-2018, 10:00 AM	#2
Ski-me Registered User Join Date: May 2012 Location: Colo Springs, CO Posts: 870	Re: 91 sububan ac controls cable or electric, and rear ac question Cable and Vacuum like the old body style. There is also a plastic piece on the door actuator that tends to break easily. Attached Images __________________ - Jeff 89' K5 Blazer, 2.5" lift, 35" tires 04' GMC Yukon XL, 3/4 ton, 8.1L

04-26-2018, 10:58 AM	#3
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,634	Re: 91 sububan ac controls cable or electric, and rear ac question Check the vacuum hose up on the firewall near the distributor. Just a small plastic hose that goes through the firewall.

04-26-2018, 05:26 PM	#4
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: 91 sububan ac controls cable or electric, and rear ac question Thanks yall, when it quits raining I'll dig in. __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14

04-28-2018, 09:03 AM	#5
Hubscrub Cruzin Join Date: Dec 2009 Location: on the road Posts: 2,835	Re: 91 sububan ac controls cable or electric, and rear ac question Found a rotted vac line fixed problem think my duct work is stopped up on vent. The passenger door vent blows like a hurricane and little pices of looks like hood insulation blowing out of it rats might have been in there? The other vent blow a little defost blows strong. Ths burb did sit for a while found little evidence of critters in engine bay. __________________ Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14



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