If it has the same engine, then damn near everything. they have the same frame, tranny, running gear... almost the same car with a slightly different body.
Yes, some will be.
The GP was redesigned in 2004 so parts are only interchangeable with 2004 or later. 99-2003 wont work.
1997-2003
1997 - 2003
Not likelyNot likely
Yes
The 3800L is a common engine among the w-body GM's. The 94 is a Series 1, and is interchangeable with most other 3800 s1. 95 + are branded with "Series II" on the engine, and are not compatible. Keep in mind however, that many parts are still interchangeable.
the interchangeable parts where invented in 1798.
Many parts are interchangeable between a 1992 and 1995 Honda Civic, but always consult a qualified automotive mechanic before trying to use these parts.
Suzuki and Peugeot do not share parts. 4-cylinder Grand Vitaras built before 2006 have some interchangeable parts with Chevrolet Tracker vehicles, because Suzuki was building them for General Motors.
interchangeable parts are used in factories
Interchangeable is an adjective; parts is a noun.