How to disable hansdfeee lift gate sensor?

[MTVP]

I have a MY 17 Esky Premium and have never experienced this to date. Maybe my feet are too small size(10), or they made an update .

 

[Darkhawk]

Do all the power liftgates come with this? I've just got one and have been opening it with the manual button this whole weekend.

Also how do you guys turn off the power liftgate? I wouldn't mind being able to use it the old fashioned way when needed.

 

[MadDogDelpho]

Can you just put duct tape over the sensor? I have no idea how these work, but would just simply blinding the sensor work?

 

[pfennig_san]

Can you just put duct tape over the sensor? I have no idea how these work, but would just simply blinding the sensor work?

Its not an optical sensor. There is no hole to cover up with tape. I think its probably sonar because parking sensors usually use sonar tech.

 

[pfennig_san]

Do all the power liftgates come with this? I've just got one and have been opening it with the manual button this whole weekend.

Also how do you guys turn off the power liftgate? I wouldn't mind being able to use it the old fashioned way when needed.

There is a switch on the overhead console to turn it off -- but that turns off ALL power liftgate functions, not just the hands free function.

 

[pfennig_san]

yep, mine's turned off too. It's a pain for the wife who now has to manually open/close the liftgate.

I did find some CVN/part numbers for various calibration Not sure if my dealer will know what I'm talkign about though or if these are new or whatever.

Found them here: https://tis2web.service.gm.com/tis2web/

These a are for Controller K39 Liftgate control Module
Part Number 84100439 - CVN 0000BF4D - Description: New calibration to prevent unwanted liftgate activation.
Part Number 23248777 - CVN 00006CB6 - Description: New calibration to improve Hands Free performance.
Part Number 23171818 - CVN 00007290 - Description: Hands Free Vehicle Access

Did you get anywhere with your dealer on this issue?

 

[Darkhawk]

There is a switch on the overhead console to turn it off -- but that turns off ALL power liftgate functions, not just the hands free function.

So all power liftgates have this auto function? I have not been able to get mine to go off.

 

[pfennig_san]

So all power liftgates have this auto function? I have not been able to get mine to go off.

I don't know how to tell if you have the handsfree liftgate function. Mine can open with a center console switch, key fob, or the hands free. It also closes with a button on the tailgate. You can't turn these functions on and off individually, its all or nothing.

 

[Darkhawk]

I don't know how to tell if you have the handsfree liftgate function. Mine can open with a center console switch, key fob, or the hands free. It also closes with a button on the tailgate. You can't turn these functions on and off individually, its all or nothing.

I guess I need to go out and try the kicking around like a ninja lol I've used the key fob, the button on the handle and the upper console button (can't believe I didn't notice it saying "OFF")

 

[LA Rodz]

Turning it off from inside turns it into a manual only lift gate.

at 6'3" i get hit every time i load groceries.

was hoping someone would know where to put the tape to blind the sensor.

Usefulness = 1 time Hit in head >20 times

 

[jeffbco]

Turning it off from inside turns it into a manual only lift gate.

at 6'3" i get hit every time i load groceries.

was hoping someone would know where to put the tape to blind the sensor.

Usefulness = 1 time Hit in head >20 times

Not an optical sensor so nothing to cover with tape.

 

[pfennig_san]

Just keeping this thread alive -- this is one of the only things I don't like about my truck. I have an awesome power liftgate I keep turned off because it always tries to close on me. Hoping somebody figures out the fix. I wish there was a wire to clip that would disable the sensor but not the rest of the power liftgate..

 

[jcgvt01]

My Tahoe is in the shop today actually for routine oil change. I gave them the printout of the Part number and CVN, but the service desk girl gave me a stupid look on her face. She said the tech would "check on" the liftgate. I'm not optimistic.

 

[Cattivo]

Turning it off from inside turns it into a manual only lift gate.

at 6'3" i get hit every time i load groceries.

was hoping someone would know where to put the tape to blind the sensor.

Usefulness = 1 time Hit in head >20 times

I'm 6'3'' as well and can't tell you how many times I've nearly gave myself a concussion on a lift gate... best option is to wear a helmet or lift the truck lol

 

[jcgvt01]

ok, so my dealer DID say it needs an update!!! But they couldn't do it today....some personnel issues, etc. (small town dealer).

He gave me the printout of the update needed. It's and update dated November 30, 2016 - applicable to 2015 and 2016 Suburban and Tahoe

#PIT5531: Unwanted Hands Free Liftgate Activation (Reprogram Liftgate Control Module K39) - (Nov 30, 2016)
Labor Operation: 2810905

Condition: Some customers may comment:
- Unwanted power liftgate opening or closing if the key fob is near the Hands Free liftgate detection area. This area is within 3 ft (1m) of the rear bumper.
- The Hands Free Liftgate Module calibration may be too sensitive.

I can try to figure out how to post a picture of the sheet he gave me later.

I will be taking the Tahoe back next week when I have time.

 

[jcgvt01]

got the liftgate control module updated today. seems to have fixed the issue in my limited 10 minutes of testing. couldn't get it to close on me by just "dancing" around the back with the key in my pocket. actually had a harder time getting the liftgate to close TRYING to activate it with the kicking motion.

 

[pfennig_san]

This is great news and I'm happy someone was able to follow through with a fix. After speaking with my dealer's service manager on the phone I knew I'd need to have some solid evidence there was a fix available before going down there because they didn't have any idea what I was talking about. Is there any way you could post a picture of what your dealer gave you on the update?

 

[jeffbco]

This is great news and I'm happy someone was able to follow through with a fix. After speaking with my dealer's service manager on the phone I knew I'd need to have some solid evidence there was a fix available before going down there because they didn't have any idea what I was talking about. Is there any way you could post a picture of what your dealer gave you on the update?

Show them or tell them about this:

He gave me the printout of the update needed. It's and update dated November 30, 2016 - applicable to 2015 and 2016 Suburban and Tahoe

#PIT5531: Unwanted Hands Free Liftgate Activation (Reprogram Liftgate Control Module K39) - (Nov 30, 2016)
Labor Operation: 2810905

Condition: Some customers may comment:
- Unwanted power liftgate opening or closing if the key fob is near the Hands Free liftgate detection area. This area is within 3 ft (1m) of the rear bumper.
- The Hands Free Liftgate Module calibration may be too sensitive.

 

[pfennig_san]

Who is your dealer? If Chevy addressed this in November, I don't know why they couldn't look it up months later.

 

[pfennig_san]

I had the lift gate reprogram done today at the dealer. Even with the GM printout from jcgvt01, I still had to bat away comments about how this update might not cover my truck, and it requires a part to be ordered, and it might not fix the problem -- wrong-wrong-wrong. Eventually, they agreed to do the work and make sure it was fixed because its still under warranty. Without that printout I would have been dead in the water I'm sure. Thanks jcgvt01!

So far so good. I turned on the power lift gate and it didn't try to close on me when I loaded groceries this afternoon.http://www.tahoeyukonforum.com/members/jcgvt01.56902/