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2000 Cadillac SLS Cadillac SLS Codes: P0741 & P1860 TCC

Tiny
ZMANIAK
  • MEMBER
  • 2000 CADILLAC SLS
Transmission problem
2000 Cadillac SLS V8 Front Wheel Drive Automatic 164K miles

Vehicle is setting service engine soon light for codes: P0741 & P1860
741= TCC stuck off
1860=PWM solenoid electrical fault
Both codes seem like they could be the result of the same failure however, I would like to know if I can reasonably troubleshoot this gripe with the tranny still in the car? Prob cause could simply be a short or open circuit which I should be able to confirm before obligating to a full on transmission overhaul.
In your experience, are these codes a sign of the devil?
I'm praying that is not the case; quote for repair over $4,000
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Tuesday, August 31st, 2010 AT 5:30 PM

3 Replies

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Since you have an 1860 attached, it is most often a faulty solenoid(melted connector). With a P0741, it can also indicate leakage in the hydraulic circuit, a faulty converter, or both. If you could read TCC slip data, you could determine for one if it is applying, and what the level of slip is.
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Wednesday, September 1st, 2010 AT 12:52 AM
Tiny
ZMANIAK
  • MEMBER
  • 2 POSTS
Thanks for your reply.

How do I obtain TCC slip data?
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Wednesday, September 1st, 2010 AT 12:19 PM
Tiny
FACTORYJACK
  • MECHANIC
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It would have to be viewed on a scan tool.
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Wednesday, September 1st, 2010 AT 9:10 PM

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