GMC Envoy Oil Filter

I Had My Car Check At Advance Auto Part.it Show No.1mis Fire.it Was Tapping So I Change Plug,wires,air Filter And Throttle Body And Ignition...

Before I Changed The Oil And Filter On The Dash It Show 0/%, But After I Change The Oil And Filter It Show 100%, But I Just Added 6 Quart So...

How Many Quart Of Oil Does This Engine Hold When Changing The Oil And Filter? I Put 6 Quart In The Engine, But It Looks Like It Needs More...

Car Was Running Fine. I Had My Oil Changed At Jiffy Lube. Car Running Ok With A/c Running. Next Day, Battery Died (not Surprised Because...