If it is a A/T Powerglide, you can use Dexron or a synthetic such as Mobil 1 ATF. You may not be able to find Dexron, but you can use Dexron II or Dexron III.
Use Dexron 2 A/T Fluid.
It is important to use the right type of transmission fluid in a car. A 1994 Chevy Corsica take Dexron III transmission fluid.
Dexron
A 2004 Chevy Tracker uses standard Dextron ATF transmission fluid. This transmission fluid is used extensively among Chevy automatic transmissions.
Dextron II fluid.
Check the dipstick, it will tell what fluid to use in that automatic transmission.
You can use any type of SAE certified transmission fluid in your 1997 Chevrolet Blazer. You can check the transmission fluid level with the transmission fluid dipstick.
If that is an automatic transmission, pull the dipstick and read it, it will tell what fluid to use.
Dexron III
Dexron-III
dextron 3
Dexron lll