A/C blows through defroster and a little through the dash vents

[Headshaker]

I notice my 2006 holiday Rambler ambassador the AC was bwing through the vent and The dash a little.I Notice the overhead defroster was blowing at the top I was wondering if that could be the Vacuum Pod. I'm at a loss I looked at Least 4 hours.

[Old Scout]

Not familiar with your rig but "default" position for vacuum mixing/blending doors is defrost for most vehicles....Assuming a DP, you have a vacuum pump under dash or in front of bulkhead. So vac pump is bad, eg, pump doesn't run;, loose hose connection, eg, pump runs all the time; or bad control head in dash [heater/cooler knobs/switches].

[lllkrob]

Look for a cracked vacuum hose between the control switch and the vacuum pod under the dash.

[Outbound]

Ditto, look for a cracked or loose vacuum hose.

[153stars]

Mine has vacuum inducer/generator from air pressure / flow and vacuum ball/tank looks form 70-80s GM cars. I believe there is a solenoid on air side as well. Notorious for cracking hoses at the cone shaped fittings on ball.