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I am a new member of the "0741" code club. My 04 Deville, with 46,500 miles has been setting the code occasionally, and is in the history also.

My question is this. Since this is a problem with seals internally in the transaxle, has anyone tried using the GM seal conditioner to soften the dudes up?

I am willing to be a test case if no one has used the product. It is GM part #

88861314

Ken

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Seals are not always rubber seals especially in pressure situations. Many times the seals are high chromium steel on shafts, etc. Rubber seals are used in clutch drums.

Logan has explored this issue and I am sure he will pop in. It has something to do with the overdrive clutch apply circuit related to the torque converter.

That seems like low miles for this code. Do you have any additional P codes? There is an associated code that if I recall indicates a solenoid issue.

Lets see what others say

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The only code is the P0741 along with the SES light. I have no symptoms other than the light as far as driveability. It showed up during a 200 mile trip. I have owned the car for 2 months, and made the 200 mile trip several times. A couple of trips the SES came on and went off. The last trip it was on for most of the trip home, and I plugged in the Actron and the code was in History.

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I do know the previous owner, who is a friend, and he advised me of the occasional SES lamp, but I did not research the issue prior to purchase. He had the SES light on a road trip like I did. The issue is one that started around 45000 miles.

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Its probably slipping and setting a code and disengaging

Here is a test you can perform when the code is current and then perform it when it is history.

Does your model have a tachometer?

If it does, drive highway speed say 55 or 60 and note the RPMs, keep your right foot on the gas and with your left foot tap the brake, the RPMs should rise about 200 RPM if the tranny was in OD. Mike

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I am sorry about your wife's health and will say a prayer for her recovery.

Lets us know how this works out. Others will comment. I dont think this is a critical problem but lets see what they say

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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We are not big fans of transmission flushes here but it appears that a Cadillac dealer did it, why I have no idea, because the factory fill is good for 100K.

It is interesting that this began right after the flush..... what tranny fluid did they use and have you properly checked the fluid level?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I don't think it was me...

I had the code in a 2001. But I also had a 1860 code for the TCC solenoid. A bad TCC solenoid will cause a false 741. But you have to have both codes.

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I dont think you need a code reader for your year, you can access codes on board. We will get more detail on that for you.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Logan, correct my memory, did you tear into a tranny to fix this or was it the leaking endshaft bushing?

Yes the P1860 code is the code I was thinking about.

What is the cause for this the convertor or internal seals? Thx

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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2 different problems at different times....

Bad TCC solenoid.

And the other was galling on the trans output housing and axle shaft.

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Yes, I remember now, thx Logan

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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You may want to ask them why they changed it before the maintenance schedule requirement. If you look at your owners manual that was premature unless the engine badly overheated or the vehicle was used for arduous use like city driving, etc. Did they actually use a flush machine?

Good you checked the level.

Your code reader only reads P or Powertrain codes. I believe that you can access all codes via your on board diagnostic system.

Someone will confirm that, the issue just came up yesterday. I am on a smartphone and searching is tedious.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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The transmission was serviced due to a transmission warning lamp. The car has been driven 7000 miles since the flush and refill, and the information center states 99% remaining for transmission service.

I do have the info to read the codes via the climate control, and will do so and post them this evening.

Ken

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I would get the fluid level correct, clear the code and see if it comes back. The P0741 code by itself means the torque converter is slipping in excess of 200 RPM most likely due to seals in the torque converter lockup circuit are leaking internally. The fix entails removing the transmission, replacing the internal seals, flushing out the transmission cooler lines AND replacing the torque converter. It is a $1200.00 job at a transmission shop.

You can continue to drive the car but it may eventually result in the clutches in the torque converter disintegrating and filling the trans. with debris - then you'll need to replace the transmission. The excessive slip from the torque converter generates a lot of heat which will destroy the clutches in the torque converter. Since the seal conditioner is a GM product, I'd be inclined to give it a try.

I had to replace the transmission on my '97 STS due to this issue - it took 6 years and 62000 miles for the torque converter to fail once it began to set the P0741 code.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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I too went through the P0741 after a tran flush. Which I have been told in the future not to do by a reputable Cadillac mechanic. In my situation the torque convertor started going out and I did not react, or the transmission shop did not react and it cost me not only a new convertor but a transmission replacement. maybe you can catch it before the guts in the convertor destroy the transmission internals. I am pretty in tune to my car and when the code would come up I could feel a slight hesitation in power. Good luck.

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Good stuff here folks

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I think that once the transmission light started coming on, it it's not electrical then it's too late to avoid fixing the seals. Servicing the transmission may or may not have postponed further problems.

The key is to service the transmission every 40,000 miles or three years, i.e. preventive maintenance.

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  • 3 months later...

Hello everyone nice to see that there are some informed alumi here of the P0741 frat party. Whoo what fun. Looks like the hazing has begun with me here on my beautiful 00'DHS Cabrent in color with black leather. March 7th I get the dreaded P0741 code on my DASH app. I am planning on driving 3500 miles to Grand Forks B.C. from Florida. My tranny is hitting overdrive although I have noticed and slight decrease in gas mileage but not in power. Guy from the tranny shop says don't drive it it's going to fried out on me. I say it won't 10K total, what doith ya'll say? who would, who wouldn't? go. Thanks.

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I would hate to say drive it and then you have trouble in strange surroundings. I do know that many drive with the code for a long time with no adverse issues other than fuel economy as the tranny does not drop into overdrive. If you do decide to drive it I would not push it beyond 55/60, baby it. I would keep deleting the code during the trip if its intermittent. KHE has noted that the torque converter clutches will delaminate and circulate through the tranny causing more serious problems. Good luck with whatever you decide.

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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