2007 Buick LaCrosse Owner's Manual - Page 360

Automatic Transaxle Fluid When to Check and Change Automatic Transaxle Fluid A good time to check the automatic transaxle fluid level is when the engine oil is changed. Change the fluid and filter at the intervals listed in Additional Required Services on page 464, and be sure to use the transaxle fluid listed in Recommended Fluids and Lubricants on page 470. How to Check Automatic Transaxle Fluid Because this operation can be a little difficult, you may choose to have this done at the dealership service department. If you do it yourself, be sure to follow all the instructions here, or you could get a false reading on the dipstick. Notice: Too much or too little fluid can damage the transaxle. Too much can mean that some of the fluid could come out and fall on hot engine or exhaust system parts, starting a fire. Too little fluid could cause the transaxle to overheat. Be sure to get an accurate reading if you check the transaxle fluid. 360