2006 Hummer H3 Owner's Manual - Page 149
2006 Hummer H3 Manual
Page 149 highlights
Battery Warning Light This light will come on briefly when you start the vehicle, as a check to show you it is working; then it should go out. Up-Shift Light (Manual Transmission) This light appears when you need to shift to the next higher gear on a manual transmission vehicle. If it stays on, or comes on while you are driving, you may have a problem with the electrical charging system. Have it checked right away. Driving while this light is on could drain your battery and result in a vehicle that may stall. See DIC Warnings and Messages on page 3-44 for more information. If you must drive a short distance with the light on, be certain to turn off all your accessories, such as the radio and climate control system. Shifting when the indicator light is on will help you get the best fuel economy. See "Up-Shift Light" under Manual Transmission Operation on page 2-21 for more information. 3-31