GMC 2007 Envoy - Manual (Page 404)

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.
Consistency of Readings
Always check the fluid level at least twice using
the procedure described previously. Consistency
(repeatable readings) is important to maintaining
proper fluid level. If inconsistent readings
persist, contact your dealer.
How to Add Automatic Transmission
Fluid
Refer to the Maintenance Schedule to determine
what kind of transmission fluid to use. See
Recommended Fluids and Lubricants on page 517.
Add fluid only after checking the transmission
fluid while it is hot. A cold check is used only as
a reference. If the fluid level is low, add only
enough of the proper fluid to bring the level up to
the HOT area for a hot check. It does not take
much fluid, generally less than one pint (0.5 L).
Do not overfill.
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