We need to know which indicator light you speak of.
Low coolant
This issue could mean that the fuse on the indicator light is blown. This could also mean that the brake fluid is low on the vehicle.
what need to do when indicator light is on
The GED indicator light is an warning indicator. Essentially, it means that the alternator in the vehicle is not charging properly.
That is the passlock security indicator. www.trailvoy.com all the answers for your Trailblazer from true enthusiasts.
4x4 indicator light
It means that the car is turning whatever side the indicator light is on. This is the same with every car
On a Mazda tribute, the car with a key light indicator means that the engine is started.
Airbag. Off light
A malfunction.
It is the powertrain/4x4/AWD malfunction indicator. It is the second indicator light covered in your owners manual if you have one.
Random cylinder misfire