I had to have my bcm replaced. I was told that it was due to car being jumpstarted which is another issue. I had to take it to the dealer with a cost of replacement being $600
the bcm will cause the door locks to lock and unlock by themself . the door lock master switch will cause wil cause the carvan not to start . first replace outside door handle key lock position switch part no#4687619. (new) you have 99% chance you'll get a bad one out junk yard. cost 50 bucks at the dealer. must replace the door lock it has switch too. at the cost $128.00.this will let you deactive the alarm system if lock are locking and unlocking you will have to change the bcm .Normally you must replace all the driver master door switches, sometimes hood switch,tailgate switch can causes the bcm to go bad as well in cause of no start disconnect the neg and the pos at battery let sit few hour to reset it self
Yes. At least that's what the dealer told me is the problem with the car I'm trying to purchase. Something in the bcm is drawing current and draining the battery down.
Bcm is going bad
No.
Cause
No, it will not.
It can be a broken wire in the hinge area, a bad switch, or simply a bad window regulator.See this post for instructions on how to diagnose the problem:
by unplug + battery cable for 1 minute but if it not working the trouble will come back (it may buy you some time to get a new one) go check with a mechanic before you buy a new one it run about 200-400 buck $$$$$$ ouch it locate in the center console by the fuse box good luck PS need save the RADIO code(4#)before you unplug the BCM ....
Yes it could.
No.
No
A bad alternator will cause a battery to go bad. It does not have an effect on the air conditioner.