Question about 1996 Cadillac DeVille

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Will my 96 cadillac sls pass emmissions with service engine soon light on?

Codes pc0717 and pc0340

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Depends on your code but chances are it will not. Your car has the older OBD scanning system but you can still get a scan done at a shop to check and see what your code is.

Posted on Oct 29, 2012


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Posted on Jan 02, 2017

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SOURCE: service engine soon light on a 2000 cadillac seville

The service engine soon light indicates you have a problem with the engine management system.The only way to get it to stay off is to lacate and repair whatever is not working correctly. Requires very specialized equipment. Take it to your mechanic.

Posted on Nov 28, 2008

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SOURCE: resetting service engine soon light in my 2002 cadillac escalade

  1. Turn the ignition key to the RUN position.
  2. Press the INFO button on the Driver Information Center (DIC) button to display ENGINE OIL LIFE.
  3. Fully push and release the accelerator pedal 3 times within 5 seconds. If the CHANGE OIL SOON light flashes 2 times, the system is reset. However if the light comes on and stays on for 5 seconds, the system did not reset. Repeat the he procedure if the system does not reset.
  4. Turn the ignition OFF.

Posted on Feb 01, 2009

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SOURCE: service engine soon light came on and stays on

The warranty company was able to find a used transmission for $900 which was still under warranty and it will cost 11.5 hours for the install, plus shop supplies and diagnostic. Total cost about $2000. I drove the car for probably at least 10,000 miles and it was leaking a small amount of transmission fluid even after I fixed a seal (waste of money) before getting it fixed. I didn't see the fluid though on my garage floor though as there is something that would catch it.

Cadillac dealer stated this is a known problem with the clutch assembly and that there is a bulletin out on it. The reason the car stalls is due to the transmission not the engine. When the car is at a light or the like there is apparently too much strain from the tranny and it stalls the engine. My car didn't get that far, but after reading a bunch of stuff and looking up the codes it appears to be the case. Of course you could get lucky and the solenoid is just bad, probably not though due to the bulletin.

You can read the codes and clear the codes easy enough. If you don't know how there are many posts on the net.

Posted on Apr 05, 2009

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SOURCE: Staedy Service Engine Soon Light is on Dash board, How To Fix this Problem?

yes and no disconnect the battery both sides, now without touching the battery touch black to red wires, this resets any codes. if the light comes back on you will need a pcm scan to get any error codes from it.

Posted on Apr 23, 2009

michigan man
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SOURCE: the service engine soon light stays on i just change oil

you can try taking the positive cable off for about 3-secs and check in you owner manual to see if it tell you how and if you do have one try this website to see if you can download one for you car.

Posted on May 25, 2009

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Check engine light flashing check engine soon smell of gas and not running smouth

Check engine light flashing means there is a bad misfire , it flashes to tell you your damaging your catalytic converter . You need to have it check , you don't won't to have to replace the catalytic converter . Can cost up to $1,000.00 . Flashing Check Engine Light CarMD

Feb 03, 2016 | 2004 Cadillac Deville

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1. Verify the exhaust system is not plugged. Check for less than 1.5 PSI backpressure at 2,000 RPM in park, or open the exhaust before the converter.

2. Check the Manifold Absolute Pressure Sensor (MAP) for 4.8-5.0 volts Key On Engine Off (KOEO) and about 1 volts at idle.

3. Check actual engine vacuum at idle at 2000 RPM.

4. Unplug the Mass Air Flow (MAF) sensor, reset fuel trim to 0%, and road test. ALSO CHECK FOR FAULT CODES IN THE OBD SYSTEM.

Mar 28, 2015 | 2003 Cadillac Seville SLS

1 Answer

I have a 2001 Cadillac SLS seville and when it in park or neutral the rpms rove up fine but when I put it invdrive or reverse I step onbthw gas it won't go pass rpm 1 what will cause this

Something inside the transmission. TCC solenoid/valve could be a cause. Have the codes checked, even if the check engine light isn't on.

Jan 18, 2015 | 2001 Cadillac Seville SLS

1 Answer

I need to take my 96 cadillac seville out of limp in mode. Can I do it without taking it to a shop?

If its an OBDII system try disconnecting the battery for 10 minutes, then reconnect. The computer should reset and all codes except for code 12 will be deleted, unless the problem still exist, in which case soon as it detects the problem again, it will set the same code again.

Aug 21, 2014 | 1996 Cadillac Seville SLS

1 Answer

96 Seville SLS... Service engine soon lit, and display reads service emission system, now its kinda sluggish, and doesn't seem to want to shift gears when accelerating, what's wrong with this Damn...

When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Nov 05, 2012 | Cars & Trucks

2 Answers

1998 sls service engine soon light stays on. autozone said code indicatted gas cap / air in gas should go out on its own but has'nt after 2 fillups

should reset after 100miles but if didnt was code from gas cap left off or is gas cap seal gone bad also the same code is for the evap system check canister and lines for cracks and damage or smell of gas

Sep 29, 2009 | Cadillac Seville Cars & Trucks

1 Answer

Service engine soon, electical displays? the alternater has bee replaced and the battery..

what do you mean it , shows electrical?

The light on just means you are not passing emissions. not a big deal unless it's flashing.
Go to Autozone, they will scan test for codes for free.

May 21, 2009 | 1996 Cadillac Seville CA Value

1 Answer

Need help with codes from service engine light

this code is evap purge problem most likely caused by a bad evap purge sol. or blocked pure hose or faulty evap purge canister

May 05, 2009 | 1997 Cadillac Seville

1 Answer

High Hidrocarbons

check the codes on why the check engine light is on, most likely needs injectors.

Oct 09, 2008 | 1996 GMC Suburban

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