Pretty much what the title says. 
Today in town, as I hopped out of the truck to get lunch, I used the master door lock switch on DS door to lock up the truck.
And NOTHING happened.
I figured that the master door switch wiring had finally failed, so I used the key fob to lock the doors. And still NOTHING happened.
Being hungry, I just locked all the doors by hand (actually I wonder if one can even still do that in newer trucks??
) and then had a nice lunch.
Back at the truck, I used the key fob to unlock the doors.
And, obviously, still NOTHING happened.
Then unlocked DS door with the key and sat in the drivers seat, where I heard a strange pulsing/clicking coming from behoind the instrument cluster. I again tried all master switches, all door switches and the key fob...and still NOTHING happened.
Hmmmm...oh well...not really a catastrophe...going to head home to look into deeper. I put the key ion ignition switch to start the truck, and immediately the strange pulsing noise STOPPED ...as soon as I simply inserted the key...did NOT even turn the cylinder.
So I turned the key to on cylinder .., still NO noise.
Turned the key off, NO noise.... removed the key and pulsing noise started again...Put the key in the ...noise stopped!!! WTF??
In a burst of sudden inspiration, with the key inserted into ignition cylinder, I tried locking/unlocking and with the master switch ... and they DID!!
And I tried locking and unlocking with the key fob...and they DID!!!~
Removed key from cylinder, and door locks would no longer work.
Drove home and then recorded a short video of the noise staring and stopping with key insertion and removal, but unfortunately I cant post it here...not sure why but pretty sure it has NOTHING to do with the door locks.
That said, I am thinking that the door lock problem and the strange noise have something to do with the BCM or SKIM modules, but not really the ignition switch.
In the morning I am going to disconnect both the batteries in order to hard reset the ECM and other modules and see if that fixes it.
ANYBODY have any other GOOD ideas ???
TIA

Today in town, as I hopped out of the truck to get lunch, I used the master door lock switch on DS door to lock up the truck.
And NOTHING happened.
I figured that the master door switch wiring had finally failed, so I used the key fob to lock the doors. And still NOTHING happened.
Being hungry, I just locked all the doors by hand (actually I wonder if one can even still do that in newer trucks??

Back at the truck, I used the key fob to unlock the doors.
And, obviously, still NOTHING happened.
Then unlocked DS door with the key and sat in the drivers seat, where I heard a strange pulsing/clicking coming from behoind the instrument cluster. I again tried all master switches, all door switches and the key fob...and still NOTHING happened.
Hmmmm...oh well...not really a catastrophe...going to head home to look into deeper. I put the key ion ignition switch to start the truck, and immediately the strange pulsing noise STOPPED ...as soon as I simply inserted the key...did NOT even turn the cylinder.
So I turned the key to on cylinder .., still NO noise.
Turned the key off, NO noise.... removed the key and pulsing noise started again...Put the key in the ...noise stopped!!! WTF??
In a burst of sudden inspiration, with the key inserted into ignition cylinder, I tried locking/unlocking and with the master switch ... and they DID!!
And I tried locking and unlocking with the key fob...and they DID!!!~
Removed key from cylinder, and door locks would no longer work.
Drove home and then recorded a short video of the noise staring and stopping with key insertion and removal, but unfortunately I cant post it here...not sure why but pretty sure it has NOTHING to do with the door locks.

That said, I am thinking that the door lock problem and the strange noise have something to do with the BCM or SKIM modules, but not really the ignition switch.
In the morning I am going to disconnect both the batteries in order to hard reset the ECM and other modules and see if that fixes it.
ANYBODY have any other GOOD ideas ???
TIA
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