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Hi, I recently had a friend (my bad) change out my radiator in my 2004 Dodge intrepid it was leaking antifreeze, has the 3.5 ho engine. Said he had to take whole front end off got the radiator in and it works beautiful no leaks awesome, now the car doesn't shift guy drove it to my house to drop it back off how could he not know it didn't shift so now I would like help in troubleshooting this issue. Is there something unhooked ? Drives fine it just shifts from first to second and that's it. Then motor screams . Thanks for any help I appreciate it