Lock lock lock lock lock lock lock LOCK LOCK LOCK LOCK LOCK

[SnowDrifter]

I've had a back burner issue on my rig where the DIC would display driver's door open. Was hoping to wait until the weather got nice

But.... Today, it decided to go full yeehaw into dummy land.

The doors seem like they're stuck in a lock loop, with the DIC continuing to display the message even after cleared.

Not sure if it's the door closed sensor or wiring or what all it could be.

Need to dig into it and get the thing fixed tomorrow because I'm genuinely worried something is going to burn out or break. Those little actuators weren't meant for getting a years worth of use in a 20 minute drive lol.

Alongside my own reading, I figured I'd reach out to you all and see if anyone has pointers on where to look, diagrams, pinouts, etc etc.

 

[SnowDrifter]

Oops I fat fingered my phone and hit post instead of new line



Only happens in motion, at speed. Seems to be aggravated by certain bumps / leans in the road, though I've not been able to put together a pattern.

 

[Doubeleive]

I would probably pull the drivers door panel off and jiggle wires/harness around and see if the problem can be replicated (try it while both locked and unlocked).
if not then does it do it at slow speed? say under 15mph? I think 15mph is when the automatic door lock happens, you could try disabling that feature if you have enabled or if it is even a option in the dic and see if that makes any difference or not.

 

[SnowDrifter]

Switching the vehicle settings from at-speed to in-gear seem to take it from a lock-loop, to an unlock-loop

What in tarnation

 

[89Suburban]

Yikes

 

[Doubeleive]

Switching the vehicle settings from at-speed to in-gear seem to take it from a lock-loop, to an unlock-loop

What in tarnation

does the door (open/close) switch seem to work? like if you park and have the radio on, shut if off and take out the keys, the radio should stay on for 10 minutes or until you open the door.

 

[SnowDrifter]

does the door (open/close) switch seem to work? like if you park and have the radio on, shut if off and take out the keys, the radio should stay on for 10 minutes or until you open the door.

Nope, immediate off. DIC prompts 'driver door open' whenever put into gear

 

[Doubeleive]

Nope, immediate off. DIC prompts 'driver door open' whenever put into gear

then you most likely have a bad door switch (actuator) the door open/closed sensor is part of that actuator as far as I know unless you have a 00-02 it could be separate
that would explain why it is trying to lock the door over and over

 

[SnowDrifter]

then you most likely have a bad door switch (actuator) the door open/closed sensor is part of that actuator as far as I know unless you have a 00-02 it could be separate
that would explain why it is trying to lock the door over and over

Ding ding

Pulled it out, pinned it. I could shake it and it would get upset

New one in, mischief solved

Love you guys!

Just in time for the rain to show up

 

[B-train]

Glad you solved it!

Best posting title EVER! Hilarious

I had a similar issue with my 2015 work truck.......but it was due to me letting it get rained on by forgetting the window was down. One disassembled door panel later after driving to the job site with the whole title of your post......luckily sitting on the defroster for a couple hours helped it realize what it had done.

 

[iamdub]

All da lockaholics where ya at?! Let's go!!

Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Everybodyyyyyy!

If you ain't gettin' locked
Get da (WHAT) out da truck!

 

[MassHoe04]

View attachment 395709

All da lockaholics where ya at?! Let's go!!

Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Everybodyyyyyy!

If you ain't gettin' locked
Get da (WHAT) out da truck!

Uh... I usually don't allow use of my image in public media without compensation, but I'll make an exception for TYF.

 

[Billy Ray]

I would probably pull the drivers door panel off and jiggle wires/harness around and see if the problem can be replicated (try it while both locked and unlocked).
if not then does it do it at slow speed? say under 15mph? I think 15mph is when the automatic door lock happens, you could try disabling that feature if you have enabled or if it is even a option in the dic and see if that makes any difference or not.

View attachment 395709

All da lockaholics where ya at?! Let's go!!

Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Lock
Lock Lock
Lock Lock
Everybodyyyyyy!

If you ain't gettin' locked
Get da (WHAT) out da truck!

This might not have anything to do with your problem but one time I was out of town I would get in my truck and while going down the road the door lock actuators we’re going lock and unlock over and over driving down the road.
I finally figured out the remote went bad and I guess the lock buttons were stuck. I know it’s a late response but hoping you’ve got it taken care of.

 

[jamesdking]

My 98 Yukon has down this for years but it seems to happen more when the temps change a lot or it rains. Happens with either or both front doors switches unplugged. Mine always locks and then unlocks the doors very quickly. I’ve removed the batteries to both remotes as well. Still happens. The only way to stop it is to remove the silver relay in the fuse panel. Otherwise my doors are pretty guaranteed to be unlocked at all times.

The only other thing I could guess is the switch in the rear or it having a safety feature malfunctioning that prevents you locking the doors at an inconvenient time. Orrrr. It reminds me of when you program the remotes using the obd connector. It also might happen when you connect the battery after disconnecting it for repairs.

Now that I’ve hijacked this thread… any thoughts?

 

[B-train]

I would look at the rear switch. Since 2 of 3 are out of the loop and it still does it, them it's getting a command from something.

So it unlocks all doors, not just the driver door? GM has had the "oops I left my key in the ignitor and locked myself out" feature for a number of years now that will pop the driver door back open if the vehicle is off and key in ignition. Just a thought

 

[jamesdking]

It’s all the actuators for sure. You can hear it from a distance when it gets going too. Thus the concern for it being unlocked at the end. I’ll unplug the rear switch and wait for the cool temps and rain this week. Thanks

 

[S33k3r]

I would look at the rear switch. Since 2 of 3 are out of the loop and it still does it, them it's getting a command from something.

So it unlocks all doors, not just the driver door? GM has had the "oops I left my key in the ignitor and locked myself out" feature for a number of years now that will pop the driver door back open if the vehicle is off and key in ignition. Just a thought

It could be a misbehaving ignition in this scenario. I have an issue where it will turn just so and lock the key, and knocks multiple systems offline (4 Wheel Steer, primarily). I jiggle it, turn everything off, get the cylinder set correctly, then turn everything back on. This issue was caused by someone trying to steal my truck and me being cheap on the ignition replacement.