well i had my heat warmers on (both) and both of the temp. on 90 degrees

we had just got into the car

bout 5 miles the heater quit

the heater info screen went out and the car made a beeping sound (not the horn, you could only hear it inside the car...and it was a soft sound) i pulled over and shut the car off... and turned it back on iw was fine

then it did it again

and again

and again and again

i turned the temp to 65 and the seat warmers off

it stayed on but the info screen for the heat control kept dimming and the heater was starting to quit...however it caught itself

I bought it to GM and they said it is from overheating and they said its cause when you start the car in cold I put it on high temp. while it was cold and it was trying to blow out hot air

the next day i started it up bout 10 min before i went to work

and put it on 70 degrees

when I went out to the car...the car was cold

and the heater was dead

i bought it to them and they said it was a computer problem

then it did it again and i bought it back and they said it is a overload

they said it needed a new heating system,wires,and computer

i was pissed...and they told me they wont cover it, because it wasn't their fault

i was arguing for bout 1 hours........telling them it wasn't my fault...they still didn't cover it..then I left and got it fixed