I have a 98 Buick Century that I need to replace the tranny. The number
on the tranny tag is a 618AHW. The number on the tranny I want to use
is a 619AHW out of a 99 Buick Century. Salvage yard cross reference
these are interchangable. One gm dealer told me these are the same
gear ratio and will interchange and another gm dealer told me they are
different gear ratios and won't interchange. Who can tell me or who can
I call to find out for sure if it will work?