general problems of the 2005 Cadillac STS

The vehicle intermittently loses engine/ electrical power while driving. When the power loss occurs, brakes and steering lose proper functionality creating a threat to the driver and passengers as well as other motorists. The vehicle then is unresponsive to the proper starting procedure. Restarting the vehicle is inconsistent. It may start immediately upon command or it may cause a theft procedure to initiate. The vehicles dic will possibly show the following prompts just before the shutdown failure occurs; service vehicle soon, service stability system soon, service a/c system soon. During the shutdown failure, no electrical components are operable but power is still available to the car allowing the dic to prompt 'no fob detected' or 'theft attempted' and the fob will intermittently allow you to send lock/ unlock commands during the shutdown failure. The failure happens in any scenario and is intermittent in the aspect of no failure occurs for a week or 5 failures occur in a day. I cannot determine when the failures began happening considering I purchased the vehicle used with 155000 miles and the failures have been happening since day 3 of my ownership. The vehicle is currently at a midland michigan Cadillac dealership being diagnosed.

Without warning my transmission stopped working . I can move the greer with out it collecting any greer . No engine check light nothing . I pulled the parking lot and had to be pushed out street .

Twice drive on interstate (possible after rough area on interstate) reduce power light and no engine power atlanta, GA traffic nearly got hit several times trying to get to the side of the interstate. Now three times stop car put in park and engine will not shut off, light says put in park although it is in park or should be. The recall on the drive axle seal, caddillac would not cover cost, I did pay to have it fixed at hoover, al caddillac.

While driving my 2005 Cadillac Sts in afternoon rush hour traffic the car suddenly loss acceleration. The car would not maintain speed (60 mph) while driving on the freeway. Had to exit freeway. The car continued to operate only at idle. Everything else was working, but could not get the car to respond to the throttle pedal. Was able to slowly exit and enter a parking lot. Restarted the car and was able to drive off normally. After a few minutes the problem reoccurred. The dealer had the car 4 different times (over a month total) and was not able to resolve the problem. The dealer indicated a $4000 cable harness assembly has to be replaced, but did not guarantee it will correct the problem. Throttle body, throttle position sensors have been replaced without results. The car did operate normal for over a month with new throttle body. After visiting the dealer for another issue the throttle problem reoccurred.

There was no previous indicator of a trouble condition--first indication of trouble was mis-firing---long story short---a complete engine over haul (rings, bearings etc. ) was made aware that these cars normally use 1 qt oil per 2000 miles---there is no warning for low oil level on the dash or dic other than remaining oil life, which was ok--an extended warranty covered the repairs the car had between 68k-69k miles and had been maintained as required by the dealership----.