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Old 04-25-2018, 05:59 PM   #1
Hubscrub
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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.
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Old 04-26-2018, 10:00 AM   #2
Ski-me
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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.
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Old 04-26-2018, 10:58 AM   #3
kwmech
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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.
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Old 04-26-2018, 05:26 PM   #4
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Re: 91 sububan ac controls cable or electric, and rear ac question

Thanks yall, when it quits raining I'll dig in.
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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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Old 04-28-2018, 09:03 AM   #5
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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.
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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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