2003 Chevy Monte Carlo "Service Traction System"

2003 CHEVROLET MONTE CARLO
38,000 MILES • 6 CYL • FWD • AUTOMATIC
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COLBYWWILSON
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I am getting the "Service Traction System" annunciator in the dash. I have an OTC Genysis and I read the following codes:

U1040C - Loss of communication with the EBCS/EBCTS System.

P1571C - TCS PWM Circuit no frequency.

That's great to know, but it doesn't tell me what to go and fix. Can you tell me what I need to fix? I believe it to be a wheel speede sensor. Does the "C" following the code identify which sensor is faulty?

also, if I purchase the Monte Carlo service manuals will it have the repair information that I need to fix this type issue?
Nov 7, 2008 at 7:55 AM
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JNOVACK
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https://www.2carpros.com/forum/automotive_pictures/52960_Untitled0_1.jpg


https://www.2carpros.com/forum/automotive_pictures/52960_Untitled01_1.jpg


https://www.2carpros.com/forum/automotive_pictures/52960_Untitled02_1.jpg

U1040 code check the electrical connector to the EBTCM module located at the ABS modulator/pump assembly. In a bad spot. Located on the subframe driver's side. You may need a trip to the dealer for more advanced diagnostics using a GM Tech II scan tool. Also it wouldnt hurt to double check the plug ins for the wheel hubs, at the wheel. They get dirty/loose/broke and even breaks in the wires.
Nov 7, 2008 at 9:23 AM
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COLBYWWILSON
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Thank you for your response. I am unable to read the document you sent in the email. It is too small and I can't figure out how to zoom in or make it larger. Any ideas? If not could you resend it in a larger image?
Thanks,

Also, I have found a TSB regarding this issue. 03-05-25-008. It is to replace both wiring harnesses to the front wheel speed sensors. It says they can chafe around the tie rod ends or the air conditioning plumbing from the compressor.
Nov 8, 2008 at 7:43 AM
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JNOVACK
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check those wires and see how they look I will post bigger I have to get off other computer
Nov 9, 2008 at 6:37 PM