Because there is a known issue with the brake lamps on the 2003 Trailblazer. I own a 2003 Trailblazer and had to take it in for service on a recall due to the issue. Take it to your Chevy dealer and have them check the VIN to see if the recall was ever done.
Blower circuit board is shot
A/C compressor not running
If done correctly, no.
possible grounded or bare wire
The difference between MDL fuses and ADL fuses are that MDL fuses are a slow blow fuse with a long time lag. ADL fuses on the other hand, are normal blow fuses with a medium time lag.
because there is a short somewhere
A short circuit either in your wiring system or electrical panel could cause your fuses to blow. Most likely, it would be caused by a burned out wire which is frayed and touching a piece of metal in your vehicle.
Check connection of ducts, check for blockage prevent air flow, check for vacuum problem prevent open/close of ducts
I would start with about 3 quarts and run the engine and drive a LITTLE and check the level..and slowly add more fluid to the transmission. Overfilling can cause excess pressure and blow seals.
there should be a diagram on the back of the plastic panel you had to remove to look at the fuses.
The air of your Chevy trailblazer 2004 blow out of the front vents when the air conditioner is on because the air condition is faulty and it needs repair.
I recently had to change mine...about a $25 fix. Kind of a pain to do but not bad. The blow motor resistor is behind the glove box. well i have a 2003 Chevy trailblazer ext but i assume they are the same. just empty the glove box...and it kind of forward and exposes the parts behind it. mine was to the left. hope this helps!