Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, DTC Codes in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Can anyone tell me about these error codes I am getting on my 2007 CTS 3.6L? The codes are U1040, ...
Can anyone tell me about these error codes I am getting on my 2007 CTS 3.6L? The codes are U1040, U1064, U1153, U1192, and P1629. I am afraid that it might be my ECM. I have 92K miles on it. Also, is the repair covered by the powertrain warranty?
U1064 = ECM to body control module communication - no signal
P1629 = Theft Deterrent Fuel Enable Signal Not Received Conditions
Can't find any of the other ones but I'm assuming you're correct with the bad ECM
Call the GM call center and give them your VIN and ask them what warranties are still active, and if the ECM is still covered.