PONTIAC MONTANA REPLACE/REMOVE

I Have A 2000 Pontiac Montana Ext. Van.3.4 - V-6 Engine. This Is The 3rd Engine Being Put Into This Car. First Time It Had 89,000 Miles;...

I've Been Told The 6th Cylinder Of My Engine Is Not Getting Compression Anymore And Therefore The Entire 6th Cylinder Needs To Be Replaced...

It Hesitates When I Am At A Stoplight And Start To Take Off I Just Had The Engine Replaced.

Is It Possible To Pull An Engine From A Montana Van From The Top? If So, Can You Send Me The Instructions To Do It? I Can Only Find Info On...