On ours the regulator went out and it actually overcharged the battery , (burned up the electrolyte) was putting out 15.4 volts the first sign was that we went through 2 sets of headlights in a month 2 different brands .
It is built into the alternator.
the battery dies, Belt replacement
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.
To remove the alternator from a 2004 Chevy Trailblazer, first disconnect the negative battery terminal to prevent electrical shorts. Then, remove the serpentine belt by releasing the tensioner and sliding the belt off the alternator pulley. Next, disconnect the electrical connectors from the alternator and remove the mounting bolts securing it to the engine. Finally, carefully lift the alternator out of its bracket.
Where is the starter on a 2004 Chevy trailblazer.
The 2004 Chevy Trailblazer holds 7 quarts of oil.
If your Chevy trailblazer 2004 gauges are not working, check your fuel pump.
where is map sensor on 2004 trailblazer
It's behind the alternator; screwed to the block right above the thermostat. Good luck removing it. You need to remove the alternator.
remove and replace engine coolant temperature(ect)/chevy 2004 trailblazer
I need a diagram for the vacuum lines on a 2004 Chevy trailblazer
105mph