2009 Buick Enclave Owner's Manual - Page 305

Service and Appearance Care 5-33 All-Wheel Drive It is recommended that the all-wheel drive lubricants be checked and filled by the dealer/retailer. When to Check Lubricant Refer to the Maintenance Schedule to determine how often to check the lubricant. See Scheduled Maintenance on page 6-3. Headlamp Aiming Headlamp aim has been preset at the factory and should need no further adjustment. However, if your vehicle is damaged in a crash, the headlamp aim may be affected. Aim adjustment to the low-beam headlamps may be necessary if oncoming drivers flash their high-beam headlamps at you (for vertical aim). If the headlamps need to be re-aimed, it is recommended that you take the vehicle to your dealer/retailer for service. Bulb Replacement For the proper type of replacement bulbs, see Replacement Bulbs on page 5-35. For any bulb changing procedure not listed in this section, contact your dealer/retailer.