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Q:

not shifting gears on 1998 Cadillac Seville STS

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
the serv. eng. soon light came on and the digital speedometer will not show up/ car wont shift through gears. Had the solonoid a and b changed in the transaxle and the vehicle speed sensor. None has worked. any suggestions?
(1) Answer
Get the problem diagnosed by an experienced mechanic. Codes are hints as to what is wrong, it takes some investigation to be able to determine the real problem.