Hi Kevin, This fuel pump works on several vehicles with a 6 cylinder 3.8L engine. To check the fitment please use our Vehicle Selector — which can be found towards the top of the homepage as well as all categories, search results, and product pages — can help verify if a part will fit your specific application. To enter your application, simply select your vehicle’s year, make, model, sub-model, and engine type and click “Go.” Once your application is selected, you’ll see a “Guaranteed to Fit” badge if the part will fit, and we recommend that you also double-check Your Vehicle Fit Details as well as the Vehicle Fitment Information table on the product page.

Yes it will work on a 3.8

Hello! the circuit that feeds power to the fuel pump is protected by a fuse, which is used as a cheap point of failure in case of a wiring short or fuel pump failure, so that no wiring is damaged.

Hi, We recommend referring to a good repair manual for step by step instructions on how to replace a fuel pump. It may require basic automotive knowledge for proper installation and professional installation is always recommended. You can find more information here: https://www.carparts.com/blog/why-you-should-always-consult-a-repair-manual/

On my 2004 buick century with 3.1L V6 the access was under the back seat, so I had to remove the seat..

You can access the fuel pump under the rear seat.

Yes you do. Unless there is a removable access port in the trunk. But my experience has been always dropping the tank. Make sure it's close to empty before you start.

Hello! Connect the same colored wires together, and Black/White will connect to Orange/Black.

Gray to gray purple to purple big black to big black orange & blk. To small blk and white .//// but what about the dark green. And gray and blk orange and blk?

Just Connect Matching Colored Wires

Hi Tony, I'm pleased to assist you. Yes, that is correct. But, this fuel pump is currently unavailable (sold out). Click on the "Notify me when available" button and enter your email address to be notified when items will be available. Here is the link: https://www.carparts.com/fuel-pump/drivemotive/repb314505?can=CPGG4850_20220621 You may want to consider purchasing heavy-duty industrial-strength cleaning wipes, good to have around your home and garage. Click on the link below to see and order while supplies last. You'll get a 30-day post-purchase price match guarantee with your order. I hope this helps. Enjoy shopping at Carparts.com! https://www.carparts.com/hand-cleaner/tub-o-towels/tubtw40?can=CPGG4850_20220621

Yes