Question about 2002 Cadillac Seville
CODES COMING UP P0507, P0741
P0507 Higher idle speed than expected partially stuck open thermostat engine running colder than normal raises idle speed. Small vacuum leak raises idle speed. sticking throttle cable holding throttle plate open.
P0741 Torque Converter Clutch system stuck off : Code conditions : No engine or transaxle system codes set, engine run time over 5 seconds , Throttle Fluid pressure switch not indicating Park/Neutral,TCC commanded On @ max duty cycle, throttle angle over 8% Trans fluid Temp input 68-248f Degrees not in fuel cut off, trans gear ratio indicates 2nd, 3rd, 4th gear delivered torque 32-150 ft lbs, the PCM detected a TCC slip value that was over the torque limits . most likely cause is bad tcc solenoid or torque converter itself. Trans shop can diagnose and repair
Posted on Nov 08, 2013
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Posted on Jan 02, 2017
I have a 2001 STS that had the same problem - Service Engine light and returned the P0410 code. It ended up being a small rubber hose that had pulled off one of the plastic lines in the secondary air system. In fact, I just fixed this last night.
Pull off the top engine shield (the one covering the motor and the fuel injectors, not the plastic one at the front of the car) and look for loose lines, hoses or wiring.
Also - if you remove the shroud under the engine (you just have to pull out a bunch of plastic retaining plugs) you can get at the lower elements of the SAS. Look for loose lines, hoses or wiring.
You could be fortunate and just have a loose line. Does the caddie run OK?
Posted on Aug 02, 2010
First thing you have to do is list all the codes, because some some might be stored for a long time. Pushing the OFF and WARM buttons together and holding will ghive you all the stored codes. Then press OFF and HI together to clear all codes. Hold and wait for bars or 0's. Now start your car and let it get up to proper operating temps. Take car for aride that aincludes all phases of driving including highway speeds. Observe SERVICE ENGINE LIGHT for coming on . Assuming it does , repeat steps previously provided, read codes stored and repair accordingly. If need be contact me with new codes and I will try to assist you.
Posted on Mar 16, 2009
turn off radio.disconnect battery negative cable.wait 20 minutes let air bags discharge.now the early model cadillac to move radio you had to move the radio bezel.the later model cadillac you move radio by removing instrument panel center cluster bezel.remove the retaining screws and pull the radio outward to access the back side then disconnect the electrical connectors and antenna lead.then lift radio out of the instrument panel.
Posted on Jul 13, 2009
click on the below links for code details.
all of the above codes seem to have a common cause, they all list a bad ecm (computer) as being a cause, and the last code P0601 points specifically to a bad computer. sorry for the bad news, hope this helps.
Posted on Jan 28, 2010
Check the fuses/circuit breaker for the heated seats, check the switch but most likely it is the pad under the seat cover. This is a high failure item.
Posted on Sep 20, 2010
Tips for a great answer:
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P0741....Torque Converter Clutch Circuit Performance or Stuck Off
P0507....Idle Control System RPM Higher Than Expected
that this dealer doesnt have the correct diagnostic software because their code is a generic code as well as the first one ,A GM dealer code would have been P1507 and this code doesnt exist in the GM list of codes ,i think they are both right and need attention but the gearbox code is a fault with the front clutch operating mechanism ,i would advise ripping teh autobox out and fitting a manual gearbox ,lot less hassle
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