DaveAm,
GM had the same issue with the early "Comfortron" auto/temp systems particularly the dumbed down version used in the late 60 early 70 Chevy. No way to get 'unconditioned' air and a butt ugly temp sensor mounted right in the middle of the dash.
GM also had something called "Comfortron I" (?) that Olds used that was manually controlled with auto temp. My New Yorker had the same set up and Ford used it for years.
Things have come so far that my Cruze has "AQS" air quality sensor. If it detects odors outside of the car it will automatically switch the auto temp system to recirc! Hell, even my SRX didn't do that!
GM had the same issue with the early "Comfortron" auto/temp systems particularly the dumbed down version used in the late 60 early 70 Chevy. No way to get 'unconditioned' air and a butt ugly temp sensor mounted right in the middle of the dash.
GM also had something called "Comfortron I" (?) that Olds used that was manually controlled with auto temp. My New Yorker had the same set up and Ford used it for years.
Things have come so far that my Cruze has "AQS" air quality sensor. If it detects odors outside of the car it will automatically switch the auto temp system to recirc! Hell, even my SRX didn't do that!