Service Bulletin P0741 ? other suspension issues

[iowaboy77]

After the first heavy snow, I started hearing a metallic clack at random times, seeminly coming from the front right of the car. Shortly thereafter, the service suspension system notice came over the DIC and stayed on. The dealership diagnosed that the sensors were wrong and ordered parts under warranty. While waiting on parts, the service engine soon light came on, and stayed on. When the parts came in, part of the ticket tells what they did:

New H2508 module, electronic brake and traction control- and reset false code

New N5650 module (9386599), control (electronic suspension (ESC/RSS/RTD). code C1251 gone. Code C0696 will be cleared by replacing right rear road sensor.

They state that service engine soon light will go out after the right rear sensor is changed next week, and the clack was a loose exhaust shield.

While driving home, the service suspension suspension notice came over the DIC again and stayed on, and the clack is still there. Any ideas?

Also listed is service bulletin P0741. whats that?

[Logan]

Service Engine Soon (SES) Light On, Diganostic Trouble Code (DTC) P0741, Torque Converter Clutch (TCC) Excessive Slip, Transaxle Chuggle, Slip/Surge (Inspect/Replace Internal Transaxle Components) #04-07-30-034 - (Aug 6, 2004)

Service Engine Soon (SES) Light On, Diagnostic Trouble Code (DTC) P0741, Torque Converter Clutch (TCC) Excessive Slip, Transaxle Chuggle, Slip/Surge (Inspect and/or Replace Various Internal Transaxle Components)

1998-2002 Cadillac Eldorado

1998-2004 Cadillac Seville

1999-2004 Cadillac DeVille

2000-2003 Oldsmobile Aurora

with 4T80-E Auto Transaxle (RPO MH1)

Condition

Some customer may comment on the SES light on and a chuggle or surge. Diagnostics may show excessive TCC slip speed and DTC P0741 will be current code stored.

Cause

Seal damage may allow the TCC apply fluid to leak into the channel plate, causing excessive TCC slippage under certain conditions, eventually causing no TCC apply.

TCC may have partial apply fluid pressure or no apply fluid pressure. If excessive slip speed is noted and condition/cause cannot be corrected by using DTC P0741 diagnostic chart, suspect worn seals from slippage of the drive sprocket bearing inner race on the drive sprocket.