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U1040 Diagnostic Trouble Code Discussion for January 2007

Lost Communication With Antilock Brake System Module

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Trouble Ticket Help Requests for DTC U1040
Help Request Posted
2000 Buick Regal LS 3.8L No Start, Cuts out, MIL Lamp on VIN: 2G4WB55KXY
U1040: ebcm communication problem. Came in as a no start.Turn key it started with foot on gas.Iac was inop.ECM was not controlling IAC.Now it starts and runs BUT when you use turn signals it dies and won't re-start for a couple of minutes,won't even crank.When it does run runs well but shifter ...
January 16, 2007
2004 Pontiac Grand Am SE1 3.4L No Start, extended crank VIN: 1G2NF52E34
U1040: Lost Communication With Antilock Brake System Module. ... extended crank time when starting the car. This seems to happen under all conditions (hot, cold, etc). One time the car would only crank and not start (she said the theft light was NOT flashing), but when she tried it later and it started, the MIL and Trac...
January 16, 2007