Buick Rendezvous Check Engine Light Reset

Advance Said It Was A Small Emissions Leak. We Changed The Gas Cap Because A Rubber Seal Was Missing. Is There Something I Need To Do To...

About A Week After An Oil Change (all Levels Were Good & I Reset The Oil Change Light That Never Came On Yet), The "service Engine Light"...

I Reset Doing The Pump The Gas Three Times. It Stays Off Until I Put It In Reverse, Then The High Beam Indicator Flashes And The Service...