2003 Cadillac CTS

2003 CADILLAC CTS
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D TECH
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  • 3 POSTS
2003 Cadillac CTS

This car will not start, run, shift, or let me remove the key. I know it is the theft deterrent system that is causing the problem, but not even the dealership can locate the problem. I have two codes: U1300- class 2 data link low and P1629c- Theft deterrent start enable signal not received. Please someone help me so I can help the dealership out. LOL.
Aug 25, 2009 at 3:01 AM
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
Does the u1300 continue to reset after clearing? It could be possible that a control module is experiencing a lock condition. Try disconnecting the battery cables and shorting them together. It is also possible that a dealer may have to do a theft relearn reprogram.
Dec 16, 2018 at 1:42 AM
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