GMC Jimmy Water

I Am Not Sure If The Caegory Is Right But I Put Air Conditioner. When I Shut Off My Air Conditioning Switch To Off It Makes A Strange Noise...

When I Am Turning I Hear The Sound Of Water Rushing In The Back Of My Vehicle. I Have Checked To Make Sure I Didn't Leave A Jug Of Water Or...

How Do I Flush Water Out Of Engine

Not Much Else To Say Really. I Do Wonder If The Ac Drain Is Plugged. I Had That Problem On A Jeep I Had. Where Is The Drain Located On A Gmc...