Where to put the Coolant...

under hood you willsee a white plastic jug top of cap says engine collent only has line that says full cold on bottom near center or a little above says full hot if below full cold fillto fc line.cold meaning like sitting over night check befor cranking.if fluid is above full cold add nothing,if recently changed could have air in system.if so take to shop,a5 minuit fix.

I have a 2006 G6 as well. My light didn't come on it was a message on the dashboard is that what you meant???? Cause I had the same question.

I have a 2007 Pontiac G6 some days it drives perfectly fine other days I lose power RPMs at 2500 or higher vibration in the pedal and a knocking noise.. I have done brakes, rotors, calipers, tie, rod, new tires, balanced, rotated, air filter, brand new oil change everything already on this car. What is going on please somebody help diagnose this with me.