Hey there I just bough my first blazer its a 2000 4 door v6 auto and it is having some issues, 1 the clement control only blows hot air sometimes?, 2 there is a little pice on the driver side roof that makes a wired noise what is it?,3 also when I am driving at night I notice that the gages and lights flicker off and on, 4 the dome lite only comes on if I push the override button?, if u can answer any of these it would help me out alot. Thanks to all who look

 

1) the climate control motor(blend door) has most likely broken the gears and is stuck on hot, or you have a vacuum leak and a actuator isn't closing fully
2) n/a
3 & 4) possibly sounds like the headlight/dome switch is shorting/shot would have to pull the dash apart and check with a multimeter.

 

Ok ill look into that thanks

 

does it make noise when u drive... could be a hidden 15k gold ring... pop up there and take a look. i fount a silver quarter hidden in a crack....

 

the dome light is the dome override button...the same thing just happened to my mom's '02 silverado. read the manual.