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Problems/Service/RepairsIf you have a problem with your HHR, want a tip on repairing or performing a particular service to you HHR here is the place to post!
Make sure you don't put to much coolant in, the normal amount is at the bottom of the bottle. I thought my Rad. was leaking but i had overfilled the coolant, dealer took awhile to figure that one out. Sounds like your fine.
I raised the cold level mark by 2 inches, & marked it with a Black Marker. Easier to see & lil more in reserve.
Before I did this tho, I made sure to see how high the level rises in summer, with full heat & running it pretty hard.