Q: transmission compatibility on 2002 Pontiac Aztek

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My wives 2002 aztek just lost the transmission. I dont know yet if it is the solenoid of if its shot. What I would like to know is if I change out the whole unit which model GM cars and years are compatible, or where I can get this info Thanks.
(1) Answer
the trans is a 4T65 and does interchange with other models. when you call a junk yard, they will be able to tel you which other cars it fits.
remember, you will be buying a junkyard part that has no warranty. it may or may not work. you need to weigh the options of having yours re built.