Trouble code PO741

2003 CADILLAC
125,000 MILES • 4.6L • V8 • FWD • AUTOMATIC
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UP29BALNE1
  • MEMBER
  • 65 POSTS
I have an STS that I need to get smogged this month and is running a little rough. I ran the codes and it came back with PO303 and PO741. I know the 303 is cylinder number three misfiring, which a tune-up should fix. Its the 741 that I have no idea where the torque converter clutch solenoid is or a clue where to find it. My code reader says also it might be stuck off. If so how would I un-stick it? Thank you for your help always appreciated.
Mar 6, 2017 at 2:56 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
the misfire can be anything so in order to not waste money on good parts have a mechanic fix that because it can be a sensor/injector/or basic engine problem. the shift solenoid is inside the transmission and could be a bad converter or wiring etc. I doubt it is stuck although possible.
Mar 6, 2017 at 3:51 AM
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