It's the brake pad wear indicator. It indicates worn brake pads that require service. (Source: '97 Catera manual)
Usually are yellow and diamond-shaped, with black lettering or symbols.
One of the exterior bulbs is blown......
Usually it is posted on a yellow diamond shaped warning sign.
the horseshoe shaped light is your low tire pressure warning light. check your tire pressure in all of your tires. the light will turn off once the tires are at the proper PSI.
Tire pressure is low in one or more tires
Low coolant warning
I believe that is the low tire pressure warning light
brake pad warning light
It is found in VERY few areas and it means a change in the road from a 4 lane to a 2 lane road.
yellow snowflake indicates 33 degrees to 40 degrees. the red snowflake indicates anything freezing or below.
Warning signs are usually a diamond shape. The color of the sign is yellow in order to caution drivers about an intersection ahead, bicyclists or wildlife that may be near the road.
It means pull out the owners manual, and hit yourself with it until you find the answer