Originally posted by: minkman on 5/29/2007 6:25:48 AM
ac/heat vent trouble
i have a 1995 S-10 bazer 4x4 with the 4.3L vortec motor. my proble is that the ac/heat only comes oyt of the defrost position regardless of the setting position. thought the prob may have been the switch so replaced it...still no luck.
my cousin told me ther is a vaccuum line that comes out of the firewall, but can't locate where it would come from.
also found to loose vaccum lines under hood.
if any body has a vaccum line diagram or any other suggestions would be a great help and much appreciated.