Key in alarm

If the key in alarm is going off while driving down the road is that the door jam switch or something else? When the vehicle is off and the key is out it quits.

Welcome to AF, If your talking about your buzzer for your door than yes it is at the door jam, either replace the switch or take it out and possibly fix yours but there pretty cheap so it's up to u.

I am thinking that the dome lights should be on as well though and they are not. It just gives off that same sound while the car is running. Any thoughts would be appreciated.

Does the pin in the switch look damaged in any way, look on both sides one of the switches are bad or bent if your dome light isn't coming on. start there.

Does the pin in the switch look damaged in any way, look on both sides one of the switches are bad or bent if your dome light isn't coming on. start there.
The light does come on when the door is opened but it is not on while the car is going down the road but it is still making the noise going down the road.

My service notes are below- so if ignition is "ON" it should not be chiming even if door is open....

The chime sounds if all of the following conditions exist:

• The key is in the ignition switch.

• The ignition switch is in one of the following positions:

- ACC

- LOCK

- OFF

• The LH front door is open

That is my problem. It shouldn't be chiming but it is while the auto is running and the doors are closed. Any thoughts please?

What year Blazer is it exactly?

It is a 97 Bravada.

That is my problem. It shouldn't be chiming but it is while the auto is running and the doors are closed. Any thoughts please?

Replace the buzzer sometimes they just go bad....