2003 Chevrolet Blazer Owner's Manual - Page 166

Tow/HauI Mode Light This light should come on when the tow/haul mode has been selected. Gate Ajar Light If this light comes on, your endgate or liftglass is ajar. Try closing the tailgate or liftglass again. Never drive with the tailgate or liftglass even partially open. TOW I HAUL GATE AJAR For more information, see Tow/Haul Mode Light on page 3-37. Fuel Gage Check Gages Warning Light The CHECK GAGES light will come on briefly when you are starting the engine. FUEL ONLY CHECK GAGES \\' $ United States Canada When the ignition is on, the fuel gage tells you about how much fuel you have remaining. If this light comes and stays on while you are driving, check your coolant temperature and engine oil pressure gages to see if they are in the warning zones. 3-37