ac changes from hot to cold over and over .
#1
ac changes from hot to cold over and over .
hi and thanks in advance if anyone can help . for a couple of days now when i start my 2000 blazer trailblazer when i try and use the climate controls to turn on the ac it will run for a few seconds cold and the fan speeds ups slows down , then it will change to heat and the fan will speed up then slow down and go back to cool . then back to heat again over and over. also when you turn the key on you hear a buzzing noise . any help would be appericated .
#2
hi and thanks in advance if anyone can help . for a couple of days now when i start my 2000 blazer trailblazer when i try and use the climate controls to turn on the ac it will run for a few seconds cold and the fan speeds ups slows down , then it will change to heat and the fan will speed up then slow down and go back to cool . then back to heat again over and over. also when you turn the key on you hear a buzzing noise . any help would be appericated .
#3
ac is fine , now it is stuck blowing straight heat now . so not sure where to start to fix the problem. i'll do a search as i have seen alot of posts about other's having nothing but super hot heat blowing . kinda sticks living in fl right now with heat blowing hehe .
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