2004 Pontiac GTO Owner's Manual - Page 240

4. While holding the assembly, turn the appropriate bulb holder counterclockwise to release it from the housing. 5. Remove the bulb from the holder by pushing it in and turning it counterclockwise. The turn signal bulb must have amber colored glass. 6. Install the new bulb into the bulb holder by pushing it into the holder and turning it clockwise. 7. Insert the new bulb into the bulb holder and install the bulb holder into the lamp housing, ensuring that the holder locks securely into place. 8. Ensure that the lamp assembly clips are seated correctly. Fit the housing to the body, ensuring that the locating pegs snap into the clips and install and tighten the attaching nuts to the correct torque. 9. Check the light operation. Replacement Bulbs Exterior Lamp Bulb Number Back-up Lamp 1156 Front Sidemarker Lamp 168 Front Turn Signal and 1157NA Parking Lamp Headlamps High-Beam H9 Low-Beam H11 Rear Turn Signal 1156NA Stop/Taillamp 1157 For any bulb not listed here contact your dealer. Windshield Wiper Blade Replacement Windshield wiper blades should be inspected at least twice a year for wear or cracking. See Owner Checks and Services on page 6-9 for more information. To replace the wiper blade assembly: 1. Lift the wiper up from the windshield and set into the vertically-locked position. 2. Press the tab that holds the wiper blade to the arm. 3. Slide the blade down and off the arm. 4. Slide in the new blade and snap into place. 5-50