Sounds like you need a new battery.
Alternator is failing.
relay in the hood fuse box HDM relay (Headlamp Driver Module)
There are several things that can cause your 2004 Chevy Trailblazer headlights to keep going out. The most common cause is a loose or corroded ground wire.
Most state inspection stations have alighment machines. you dont
how to replace lowbean head lights in 2004 impla
Yes, they did.
Yea its an electric or body comtrole module .about 400.00to repair at dealer. Will cause lights to flicker off & on and sometimes horn will chirp also while driving
The rheostat in the light stalk is dirty and getting a bad connection causing the dash lights to flicker dim to bright and so on. Try turning the reading and dash lights on and off several times moving the rotary switch from all the way off to all the way on abd back several times. This sometimes will clear the problem for a period. If not, the light stalk will require replacement.
As per www.totalrecallinfo.com there are 2 recalls on this item, but both on exterior lights.
check your fues
Unplug the wire harness.Unbolt the three bolts on the back of the lens, and remove it from the housing.
The 2004 Pontiac Aztek does not have automatic headlights; the headlights must be manually turned on by the driver. However, it does feature daytime running lights that activate when the vehicle is in motion. For night driving or low-light conditions, the driver needs to switch on the headlights manually.