A faulty alternator, a faulty belt tensioner.
The voltage gauge on the Blazer is not the most accurate (cheap) When using the signals the voltage draw on the system is enough to make the gauge move slightly.
Bad brake booster.
engine misfire. i have a '96 Chevy blazer but i don't have that problem, i was reading reviews on the car and found out that some of them do that.
Head gasket or cracked head. Mo
might be a fuse
A blown fuse can make your dashboard lights to not work in your 1993 Chevy Blazer Tahoe. A burned out bulb can also cause this.
Hey Tom ==It probably has a loose connection and looses voltage/. GoodluckJoe
The lights on the odometer on a 1999 Chevy Blazer might not work because of a burned out fuse. They might also not work if the lights are burned out.
Bad ideal. Why would you want to ? It would just cause bad problems later.
replace the catalytic converter
Cheak fuel pression in the morning.
over charging or bad bearings its about to let you stranded change it