Lights dimmed slightly, heater blows cold

tell all that works and does not work not just the bad
electric and fuses run off huge power buss.
even 10 things off 1 fuse
so telling it all makes the job 10x more easy see?
dim head lamps high and low beams?
horn dead.
but does car start run and drive,???

is key dead? engine dead. , heater blower dead
radio dead. ???????? key starter motor sounds strong and fast cranking the engine to start it?

it is an 01 cavalier.

HEATER NOT BLOWING COLD,NO HOT AIR FROM HEATER,A/C BLOWS HOT AIR,A/C NOT BLOWING COLD, COLD AIR FROM HEATER,BLEND DOOR ACUTATOR CLOSED,HVAC UNIT NOT OPERATING,
http://alltypesofpartsreplacing.blogspot.com/2012/12/heater-not-blowing-coldno-hot-air-from.html

My car did that too. I had to change my altenator and it quit doing it

when engien is cold ,top up coolant bottle with antifreeze and see what happens ,or the heater hoses are on in reverse

i would start buy changing all bulbs if u got lights in middle of dash then your fuses are not blowed change the bulbs.

This is usually a sign of the battery wires not connected completely or the ground has become frayed and needs to be replaced.

I believe there are multiple bulbs in each of the units, as they blow the unit dims, change the bulbs you should be good

Before going crazy with this, check all engine and body grounds to make sure everything is connected. it's possible something was left a bit loose when doing cylinder heads. Wont hurt to go over the positive battery and alternator connections as well!

i have replaced my dimmer roller switch to solve my problem with the dash bord light flickering and dimming by them selfs .. that or just flip (smack) the roller switch for temp inprovement untill you decide to install a new dimming switch..?