The torque converter clutch (TTC) may stop working due to an internal transmission failure. The Check Engine Light will illuminate if this occurs. Our technicians tell us the transmission will require dis-assembly to correct this concern.Google+
Car Problem Reports
Cadillac Seville SLS TCC Inop Due to Internal Transmission Fault
Cadillac Seville SLS Problem
Average Mileage: 89,825 mi (56,000 mi - 150,000 mi)
This is the third Cadillac that we've had this problem with. 1997, 2001 and now this 2003. Repair costs are from $2400 for repairs to $4000 for new transmission. The fault code is PO741
Visitor, 2003 Cadillac Seville SLS, 80,000 mi
check engine light came on. mechanic thought transmission may need to be replaced but after examining the car, found that it was torque selinoid. I picked up car, and light came on again. This time I was told it was a manifold vacuum.