I guess that's the problem on my 05 387 peterbil, all I got it's hot air coming in thru the vents even with the ac on and temperature control knob on the cold position, everything works fine in the bunk cold and hot.
379 Heater Deflector Control ??
Discussion in 'Peterbilt Forum' started by The Truckist, Dec 21, 2011.
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Page 3 of 3