Chevrolet 1995 Blazer Owner's Manual page 256

Then, without shutting off the engine, follow these steps:
1. Flip the handle
up and then pull
out the dipstick
and wipe it with a
clean rag or paper
towel.
2. Push it back in all the way, wait three seconds and then pull it back out
again.
3. Check both sides of the dipstick, and read the lower level. The fluid
level must be in the COLD area for
a
cold check or in the HOT
area or
cross-hatched area for a hot check.
4. If the fluid level is in the acceptable range, push the dipstick back in all
the way; then flip the handle down to lock the dipstick in place.
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