Can you change the motor from top on a 2005 Chrysler Pacifica?

You can't simply "change the motor from top" on a 2005 Chrysler Pacifica (or any car for that matter). Replacing an engine is a major undertaking requiring significant mechanical expertise, specialized tools, and a considerable amount of time. It's not a job for the average DIYer.

To replace the engine, the entire engine needs to be lifted out from the engine bay, not just from the top. This involves disconnecting numerous components (wiring harnesses, hoses, exhaust system, transmission, etc.), removing various supporting parts, and carefully lowering the engine using appropriate lifting equipment.

If the engine in your 2005 Chrysler Pacifica needs replacing, it's strongly recommended that you take it to a qualified mechanic or a reputable auto repair shop. Attempting this yourself without the proper knowledge and equipment is extremely risky and could lead to further damage to the vehicle or personal injury.