Chevrolet TrailBlazer 2007 Owner's Manual page 409

Then, without shutting off the engine, follow
these steps:
1. Flip the handle up and then remove the
dipstick and wipe it with a clean rag or
paper towel.
See Engine Compartment Overview on
page 392 for more information on location.
2. Reinstall it back in all the way, wait
three seconds and then pull it back out again.
If the dipstick does not go down the tube
easily, turn the blade and try again until it is
fully inserted in the tube.
The automatic
transmission dipstick
handle with this symbol
on it is located in the
engine compartment on
the passenger's side
of the vehicle.
3. Check both sides of the dipstick, and read
the lower level. The fluid level must be in
the COLD area, below the cross-hatched
area, for a cold check or in the HOT or
cross-hatched area for a hot check. Be
sure to keep the dipstick pointed down to
get an accurate reading.
4. If the fluid level is in the acceptable range,
reinstall the dipstick back in all the way;
then flip the handle down to lock the dipstick
in place.
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