Question about 2003 Chevrolet Tahoe
Can you help me figure out why all the doors on my 2003 Tahoe lock properly but the right passenger which all of the sudden reversed pattern? In other words, when I put it in gear they all lock but the passenger unlocks and then in Park, they all unlock but the passenger then locks? by the way the keyfab remote quit working simultaneously and when I lock it manually a warning sound first but the second click will lock all the doors
Yeah. your BCM(body control module) has decided it doesn't want to work right. Since you can double click it and it works, leads to an internal problem with the BCM. Personally, I would live with it. New or rebuilt BCM's are cheap and then you have to have them programmed..$300+
Posted on Nov 12, 2014
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Posted on Jan 02, 2017
SOURCE: power locks not working right
Hey, this might work.....get in truck, close doors, put key in ignition in lock position.....hold down the door lock button on driver side door control and wait for the lock control to be displayed on the information screen(odometer read-out).....it should say like lock 1, lock 2, lock 3, lock 4.....or something, I always reset mine to LOCK 1, to do this hold the odometer reset button on dash for a sec or two til it changes settings, then release, repeat till you get to LOCK 1, then quickly press and release odometer reset button to exit program, this is the function to lock doors over 15 mph and when out of park and to unlock doors when returned to park......yours' might be set to another function number....try it out, let me know if this helps.........good luck!
Posted on Mar 06, 2009
SOURCE: 2007 Cehvy Tahoe, Front pass
The power door locks and indeed most all power operated devices in the car are controlled by a central electronic module called the BCM (Body Control Module), the system is capable of "self testing" its functions and then it reports back to the scanner what problems were found with the systems it controls in the form of a body fault code, this test is run using a GM Tech II electronic scanner, you will need to have this test done to determine the reason for the lock problem. Once it is diagnosed to save money you can then do the repair your self unless the BCM is defective, in that case the new module must be programmed for your truck or the security system will not allow you to start the engine
Posted on Feb 02, 2011
If the remote key fob locks and unlocks the doors then the problem is more than likely the power lock switches, this is a common problem on the Venture Van.
Posted on Mar 03, 2013
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