Question about Cadillac CTS
The bcm is going bad
Posted on Sep 03, 2010
Under the hood you have 50 amp fuse on the right side of engine. make sure all the fuses are ok. Then check all the 15 amp fuses. If these check out good then the next step is to check to make sure you have power at the ABS module . If you do then the problem is the ABS module failed.
You do have codes stored if any of those lights are on. You just need a better scanner that can access all the systems. All cheap testers can only read engine performance codes.
Go to modulemaster.com You can remove the unit and send it out to be rebuilt for alot less than a dealer replacement. You can still drive the car while its out getting rebuilt.
But you really need to get the code before you proceed. Hate to do all this and it ends up being a wheel sensor which a code would specify.
Posted on Aug 23, 2010
You have a problem in your ABS control system or a caliper has failed. You will need to inspect your brake calipers and have the ABS control module tested. I recommend the Haynes repair manual for directions on how to properly do these things. It is available at most major auto parts stores.
Posted on Aug 21, 2010
Did the battery get disconnected?If it did,it needs a "reset".My neighbors car needed that.There are instructions for it in the owner's manual,maybe under battery removal section.Or flip to the back index and look for an appropriate term for it.Something about systems locked up,or shifter locked up.If you can't find it,or don't have the owner's manual,call a Cadillac dealer.They will tell you for free.Good luck!Greg
Posted on Aug 21, 2010
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Posted on Jan 02, 2017
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this warning light or any other stays on in the dash it is indicating
that the systems control module (or the system sensor in the case of
lights like low oil pressure, door open indicators etc.) has detected
a fault, it then disables the system (this applies to ABS,TCS, TCM,
SRS, TPMS, MIL, CEL and BCM faults and others) as long as the light
is on. You must now have the dealer hook up a special electronic
diagnostic tool and "scan" the system for the fault code
that is stored for the problem(s)
Legend of Abbreviations. ABS Anti-lock brake system. TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module. TPMS Tire Pressure Monitor System, MIL Malfunction Indicator Lamp, CEL Check Engine Light.
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