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 speedometer cable anymore, it's all electronic.
There is no cable....It's all done with a sensor and electronics.
dash light on my 1996 chevolet lumina is not working where i am able to read mileage
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.
i would have the coil packs tested
It will not run and will appear to be out of fuel.
Check the fuses.
Chevy Lumina has not the carborator.