2010 Chevrolet Blazer Repair Question
Mileage: No information provided.
S-10 blazer won't start
Answer
I would have the battery checked out at a local parts store. If the battery is good have the alternator checked out. Next would be to check your electrical connections between the battery and alternator. With intermittent electrical problems they can be a bear to find sometimes unless it is doing it when the shop looks at it, but I would start with the battery and alternator(your voltage regulator could be failing in the alternator causing the car to loose power(voltage) and with most newer cars when the voltage drops too low the computer will shut off causing the car to die.
Don't go there till we tell you-Triple check your engine electrical system
A buddy of mine has a 1997 s-10. The truck developed the same problem as yours. It took awhile to figure out but it was the ignition switch that was bad. When we had dash lights the truck would run and when it shut off, so did the lights. Hope this helps