1994 GMC Suburban Owner's Manual - Page 128

This light will come on briefly when you are starting the engine. If the light comes on and stays on while you are driving, it could indicate a problem with your vehicle. It could be a problem with your oil pressure, coolant temperature, or some other problem. Check your various gages to see if they are in the warning zones. If they are, have your vehicle serviced right away. Daytime Running Lights(DRL) Indicator Light (Canada Only) I The green Daytime Running Lights (DRL) Indicator light, if you have one, is located near the upper center of the instrument cluster. I If your vehicle was first sold, when new, in Canada, you will have this green light on the instrument panel. It will light whenever the Daytime Running Lights are on.For more details about DRL, see "Headlights and Vehicle Lighting" in this section. Shift Indicator Light The orange SHIFT Indicator light, if you have one, is located near the upper left corner of the instrument cluster. This light, with the word SHIFT and the upshift arrow, is used on some models with manual transmissions. Depending on your particular model, your vehicle may not have this light. The SHIFT indicator light will help you get the best fuel economy. See "Shift Light'' or "Shift SpeedsVehicles Without Shift Light" in this section for more information. 2-72