2008 Pontiac G5 Owner's Manual - Page 103

Shift Speeds Up-Shift Light If you have a manual transmission, you may have an up-shift light. This light will show you when to shift to the next higher gear for the best fuel economy. United States Only When this light comes on, you can shift to the next higher gear if weather, road, and traffic conditions let you. For the best fuel economy, accelerate slowly and shift when the light comes on. While you accelerate, it is normal for the light to go on and off if you quickly change the position of the accelerator. Ignore the light when you downshift. {CAUTION: If you skip a gear when you downshift, you could lose control of your vehicle. You could injure yourself or others. Do not shift down more than one gear at a time when you downshift. 2-31