Pontiac 1999 Firebird - Manual (Page 272)

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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 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 in place.
How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. See “Recommended
Fluids and Lubricants” in the Index.
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 doesn’t take much fluid, generally less
than one pint (0.5 L). Don’t overfill.
NOTICE:
We recommend you use only fluid labeled
DEXRON
R
- III, because fluid with that label is
made especially for your automatic transmission.
Damage caused by fluid other than
DEXRON
R
- III is not covered by your new
vehicle warranty.
D After adding fluid, recheck the fluid level as
described under “How to Check.”
D When the correct fluid level is obtained, push the
dipstick back in all the way.
Manual Transmission Fluid
When to Check
A good time to have it checked is when the engine oil is
changed. However, the fluid in your manual
transmission doesn’t require changing.