just bought a 04 tahoe from a dealer and when i test drove it i checked the ac (dual climate control) and the snowflake came on and then flashed and went off. so when i got back told them that it was not working. they took it to there shop and sucked the old fre-on out and checked for leaks (said no leaks were detected) and filled it back up with new fre-on. Also said it was a half pound low. So it worked all day yesterday and half the day today, and noticed it doing the same thing again when i left from work to come home. does anyone have any idea so maybe i have a place to start?

The heated seats on both front seats, when you push the button to turn them on all the lights blink but wont stay on?

Any comments are much appreciated.

Thanks
clayton