Auto transmission. on 2000 Cadillac Seville SLS

Service engine light indicate the auto transmission torque converter clutch is not engage. The engine rpm at 60 mph is 2500, What is the cure for this issue ?

Asked by for the 2000 Cadillac Seville SLS
A trip to the dealer or a transmission service shop to diagnose the torque coverter issue.
1 more answer
possible sol , torque converter or seal in hydralic circuit for torque converter , what is the code #