Speedometer stopped working and mileage has dashes in display

Most likely a failed "vehicle speed sensor", have ECM codes pulled to verify.

abs unit failed or the sensor on front passenger side wheel has failed all depends if abs is fitted for the abs unit. you would have a light on dash if abs has faild or the bulb may have blown on the light.

hi i would check the abs module its located on the abs pump it controls the speedometer and can also bring lights on the dash eg abs &the brake warning light

Could be just a bad dash screen or a blown light in the dash. New dash screens are fairly cheap.

Usually if both the odometer and speedometer stop working, the problem is the speed sensor on the transmission. You should also have a trouble code in the engine computer.
If one component works but the other does not, the problem is usually the speedometer head in the dash.

Sounds like your charging system (Alternator) may be failing. Take it to an auto parts store and have a charging system load test performed.

Let us know results.

Best regards,

check the body control module under the dash

I think the reason it starts and turns off is most likely you fuel pump the abs light on could be the brake fluid level and or the brakes may need replaced.

if your speedometer is working,and the odometer is not,you will need to have the odometer replaced for it works off the speedometer

Usually the ABS computer knows what it is doing. You may want someone to hookup a scanner to the ABS test port.
When I had my speedometer and odometer act up, it turned out to be a bad alternator. You might want to check yours.