1995 Pontiac Firebird Owner's Manual - Page 259

3.8L Transmission Dipstick How to Add Fluid Refer to the Maintenance Schedule to determine what kind of transmission fluid to use. "Recommended See Fluids and Lubricants" the Index. in Add fluid only after checking the transmission fluid HOT. (A COLDcheck is used only as a reference.) If the fluid level low, add only .enough the proper is of fluid to bring level upto the HOT areafor a hot the check. It doesn't take much fluid, generally less than a pint. Don 't oveflill. We recommend you use only fluid labeled DEXRON@-III, because fluid with that label is made especiallyfor your automatic transmission. Damage caused by fluid other than DEXRON@-111 is not covered by your vehicle warranty. new After adding fluid, recheck the fluid level as described under "How to Check." When the correct fluid level is obtained, push the dipstick back in all theway. 4. If the fluid level is in the acceptable range,push the dipstick back all the way...in .