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Cadillac Tech Tips - How to fix it Discussion, Malfunction Indicator Light with P0741 and P1860 in Item Specific Cadillac Discussion; Well add another one to the list...I just completed the TCC solenoid replacement w/complications. The filter came loose as soon ...
  1. #76
    derone is offline Cadillac Owners Fanatic
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    Re: Malfunction Indicator Light with P0741 and P1860

    Well add another one to the list...I just completed the TCC solenoid replacement w/complications. The filter came loose as soon as the cover was moved away from the body of the transaxle. Good thing is, I found the cradle can be lowered enough on that side to completely remove the cover and put the filter back in place. I bought a filter kit during the job, but it had the wrong filter in it. The 'neck' on it was at the end of it instead of about 1/3 of the way down on it. Go figure..., even the Helms factory manual has the wrong picture of it. It took two days, but if I had to do it again, I'd lower the cradle right away, and probably could do it in half the time. I should have broke out the air tools too. There's alot of heavy bolts in this job. I did use the baggie tie to get the retainer pin in, but looking back at it, I should've gone straight for the cradle once the sheet metal filter came loose. Anyway, initial testing shows this $40 procedure did rectify the problem. The old solenoid connector broke away from its body like the pics already posted. Many thanks to the folks here for another cure to the Seville blues.

  2. #77
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: Malfunction Indicator Light with P0741 and P1860

    Just started getting these codes on my 02 Deville. The past few weeks I've noticed what felt like some bucking while under sight load on the hi-way. Codes just started today.

    I seem to be good on the road test part (Step 1). Tach goes up and down as you say it should. I'll have my mechanic check the wring the next time it's in the shop. Thankfully the car just got inspected last week after a fight with secondary air injection problems.

    I'll keep you posted

    UPDATE: My mechanic opted to not look at this and advised me to go to a transmission shop. One of which we both know and trust. Just out of curiosity, whats the time involved in using this method as apposed to pulling the drivetrain?
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
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  3. #78
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: Malfunction Indicator Light with P0741 and P1860

    Dealer quoted me $890, transmission shop quoted $1000. Both said there's no way do to the job without pulling the drivetrain. The transmission guy said hes tried and broken 2 steering racks in the process.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  4. #79
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Malfunction Indicator Light with P0741 and P1860

    Kicker is, you may also in the torque converter/transmission output shaft seal replacement business.

    P 1860 alone says it's the control solenoid, do-able with the microsurgery procedure....... BUT the P 0741 also says the TCC itself is faulty/leaking, so out comes the converter.

    When my solenoid went, the car did the same intermittent highway speed bucking feel, as the TCC went in and out, then the solenoid finally failed - BUT I never had the P 0741 code - never. Only P 1860 - and that was simple to clear on the fly, using the ScanGauge-II. The TCC failure cost me about 1 mpg. Clear the code, out goes the light, and it resets on the second start-run event after reset, over 43 mph.

  5. #80
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: Malfunction Indicator Light with P0741 and P1860

    That's pretty impressive. The axle seal on the driver side does leak. Is that what you're talking about? The last time I encountered that it wasn't pretty. The entire final drive assembly had come apart causing a complete rebuild.

    Interesting thing about that incident is there were no symptoms other than the leak

    Quote Originally Posted by Submariner409 View Post
    Kicker is, you may also in the torque converter/transmission output shaft seal replacement business.

    P 1860 alone says it's the control solenoid, do-able with the microsurgery procedure....... BUT the P 0741 also says the TCC itself is faulty/leaking, so out comes the converter.

    When my solenoid went, the car did the same intermittent highway speed bucking feel, as the TCC went in and out, then the solenoid finally failed - BUT I never had the P 0741 code - never. Only P 1860 - and that was simple to clear on the fly, using the ScanGauge-II. The TCC failure cost me about 1 mpg. Clear the code, out goes the light, and it resets on the second start-run event after reset, over 43 mph.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  6. #81
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: Malfunction Indicator Light with P0741 and P1860

    Not the axle seal - the TCC input shaft seal. The TCC solenoid ports transmission fluid pressure to the converter input shaft ports - that pressure sets the viscous clutch in the converter. P 0741 says the solenoid (monitored by P 1860) is working but the clutch itself is not. If/when the solenoid electrical connector stub (336) breaks off, then you get the P 1860 code and maybe P 0741.

    The DTC test sequence for TCC operation is: Solenoid first; if good, then it waits for the 43 mph road load TCC set. If good, no codes. If the solenoid is faulty, P 1860 sets and the system does not "look" for TCC engagement. If the solenoid is good, it then "looks" for TCC lockup - if no go, P 0741 sets.
    Attached Images

  7. #82
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: Malfunction Indicator Light with P0741 and P1860

    Thanks Sub, you're a star. So there's a seal on the input shaft which if leaks causes pressure loss etc etc. I imagine that's not a huge repair at this point once you're into that far. LOL
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  8. #83
    derone is offline Cadillac Owners Fanatic
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    Re: Malfunction Indicator Light with P0741 and P1860

    Quote Originally Posted by codewize View Post
    The transmission guy said hes tried and broken 2 steering racks in the process.
    The steering rack is mounted to the cradle. You must disconnect the rack from the steering shaft joint, by removing one cinch bolt when the cradle comes down either on one side or both.

  9. #84
    Dante is offline Cadillac Owners Member
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    Re: Malfunction Indicator Light with P0741 and P1860

    I'm in the middle of this job now on my 2001 SLS. Everything has gone smoothly until I got to that motor mount stud on the right. What tools exactly were used to get that off? Doesn't seem like enough room for a regular open wrench. I tried a crow foot wrench but can't get that in there either. I took off the air hose and the tie-rod to move them out of the way. I think I'm going to go to the store to try to find a stubby wrench or something.

    Update: Once I actually got the right size wrench it came out in 5 minutes. There is no need to actually remove that bolt, just unscrew it and let it sit there in the bracket. I used the magnet method to get the hairpin in place. Getting in place was easy, I did it about 30 times, but it took forever to snap it in. I finally used my two index fingers to grip it and push it in. Once I thought it snapped in and I stepped away with a great feeling of accomplishment and then I heard "ping". It popped out and hit the pan and dropped down inside. The pin is really easy to get out if it falls in. I just tilted the bottom of the pan down a little and shook it till I could see the pin over the edge and then grabbed it with a magnet.

    Now I can't finish putting it together because that little coolant push connector at the back of the engine crumbled to pieces. I don't think any GM dealer parts departments are open on Sunday.

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