1995 GMC Yukon Owner's Manual - Page 311

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 HOT. (A COLDcheck is used only as a reference.) If the fluid level is low, add only enough of the proper tluid to bring the level up to the HOT area for a hot check. It doesn't I ' We take much tluid, generally less than a int. DOH o\?erJi'll. recon?mend you use only tluid labeled DEXRON -111, because fluid with that label is made especially for your automatic transmission. Damage caused by fluid other than DEXRON@-111 is not covered by your new vehicle warranty. 8 0 After adding tluid, recheck the .fluid level as described under "How to Check." When the correct fluid level is obtained. push the dipstick back in all the way; then flip the handle down t o lock the dipstick in place. 0 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. How to Check Because this operation can be a little difficult, you may choose to have this done a t your GM dealer Service Department. If you do it yourself. be sure t o follow a l l the instructions here. or you could get a false reading. NOTICE: Too much or too little fluid can damage your transmission. Too much can mean that someof the fluid could come out and fall on hot engine partsor exhaust system parts, starting a Be sure fire. to get an accurate reading if you check your transmission fluid. Check the fluid level only when your engine is off. the vehicle is parked on a level place and the transmission is cool enough for you to rest your fingers on the transmission case. 6-29