Because the bulb is burned out.
Are the lights in the dash coming on, and it just won't crank or are there no lights at all? If the lights are coming on you need an ignition switch.
Answerapply the parking brake before turning the ignition/starting the motor. OK, so how do you reengage it?
ensure that the indicator stalk is set in the middle when you turn off the ignition.
You do not need the key in the ignition to make lights work. They are "hot" all the time. The reason you Sid marker lights are coming on at the same time is because you have a bad ground in one of your brake lights. It's allowing electricity to jump from the brake lights to the tail light circuit. Take the brake lights apart, clean up all the rust and make sure they "ground" to bare metal. Problem cured.
Head lights on?
Yes, the ignition on a trailblazer can cause head lights to work improperly.
Day time running lights?
Could be a fuse, a relay... definitely something electrical. Now if you have dash lights coming on for no apparent reason, it's the ignition switch.
Yes.
You should remain stopped until the bus's red lights are no longer flashing.
Is it when the ignition lights on the brake lights are stuck on? If so adjust the brake light switch at the pedal.hope this helps Answer: Its the park lights. The vehicle is probably in park.
Red lights flashing on a school bus mean remain stopped until they are turned off.