2006 Buick Terraza Owner's Manual - Page 350

If your vehicle has the 3.9L V6 engine, the terminal is located under the fuse block cover. Remove the cover to access the remote positive (+) terminal. {CAUTION: Using a match near a battery can cause battery gas to explode. People have been hurt doing this, and some have been blinded. Use a flashlight if you need more light. Be sure the battery has enough water. You do not need to add water to the battery installed in your new vehicle. But if a battery has filler caps, be sure the right amount of fluid is there. If it is low, add water to take care of that first. If you do not, explosive gas could be present. Battery fluid contains acid that can burn you. Do not get it on you. If you accidentally get it in your eyes or on your skin, flush the place with water and get medical help immediately. 3.9L V6 Engine See Engine Compartment Overview on page 5-12 for more information on the location of the remote positive (+) terminals. You should always use the remote positive (+) terminal instead of the positive (+) terminal on your battery. {CAUTION: An electric fan can start up even when the engine is not running and can injure you. Keep hands, clothing and tools away from any underhood electric fan. 5-44