What is a btsi fuse on my 2004 Chevrolet TrailBlazer?

no- no recall on the fuel tank that cracks at the filler neck the following link are complaints about fuel tank that are recieved if you go to home page and enter trailblazer they give you the break down of the whole series of model and complaints as well as recall information they also list the TSB technical service bulletins
2004 Chevrolet Trailblazer Crack In Fuel Tank

flip up the back seat on the driver's side. take black cover off the fuse box panel and look at the fuse location on the fuse map. It's all there. The seats just flip up. Good luck let me know how you make out

There isn't a fuse. There is a circuit breaker, but it runs all the windows.

Brake Transmission Shift Interlock System

sounds like you need to try jumping it, you lost voltage and the btsi solenoind is probably locking you out of putting it into park and being able to turn the key back

Front fuse box



Rear fuse box

Fuse panels can be located sround the pedal or steering column area or underneath your glove box and the BTSI solenoid should be inside the steering column.

Headlamp relay part # 15016745 under hood fuse box , common problem.

You need to replace your BTSI (brake transaxle shift interlock) solenoid. I have replaced MANY and it is the problem 99% of the time. The only other thing it could be is your BTSI fuse so check it first. All you have to do is remove the shifter assembly and install a new BTSI solenoid (couple of screws and two connector terminals) and you will be driving in no time. Hope this helps!!

2004 Chevy Trailblazer radio won't eject CD. Push the eject button and the thing just clicks and says "check CD" . Tried bulletin 04--8-44-020C (fuse removal and reinstall) didn't work. Any other suggestions before going to dealer?