It could be a problem with your transmission. The same thing just happened to me. It required replacing some of the internal transmission parts, but did not require replacing the entire transmission.
rpm and speedometer gauges not working 1995 Chevy silverado 2wd
If your Chevy trailblazer 2004 gauges are not working, check your fuel pump.
I pretty sure it doesn't have a speedometer cable, it is electronic.
There is no cable....It's all done with a sensor and electronics.
There is no speedometer cable anymore, it's all electronic.
In a 1995 Chevy Lumina, the speedometer cable connects to the transmission at the speed sensor. The other end typically attaches to the back of the speedometer gauge in the instrument cluster. To access it, you may need to remove the dashboard or instrument panel. It's important to ensure the cable is properly secured to avoid issues with speedometer readings.
dash light on my 1996 chevolet lumina is not working where i am able to read mileage
look in your owners manual and it will tell you.
If the speedometer is not working but the odometer is, I would suspect the dash cluster is at fault. If both speedometer and odometer are not working I would suspect the speed sensor on the transmission is at fault.
If the speedometer is not working it probably needs a new speedometer cable. If the speedometer is actually broken either take it to as speedometer repair shop or replace it.
It will not run and will appear to be out of fuel.
i would have the coil packs tested