Liftgate not working, well here is a fix

[Tylus]

Mine has broken 2x this year. I replaced once with OEM and once with an Amazon special. That makes 4 broken since I’ve owned this in 2.5yrs

the original is installed right now. I returned both of the broken lifts and got my money back

you’d think GM would have figured this out by now

 

[Tylus]

FWIW, the replacements lasted ~2 weeks each

 

[Slow5.0]

I lost count on mine, 7th maybe or 8th. This last one GM installed lasted 3 months
I usually dont care much when some things breaks, but when you pay $75k it better be good. I had some fall8ng off headliner issues in the past, dealer tried fixed 4 times and headliner flapping up and down. 5th time i took it to dealer, i had 5 gal gas container with me. And told service advisor, if you dont fix it this time im burning it down right here. The installed new headliner under warranty

 

[Slow5.0]

I think what kills these actuators/shock is cold weather, moisture getting on top where is motor and leaving liftgate open for more than 10 minutes. And dont try to stop liftgate by hand when it closing or opening by it self. It goes crazy after that. Also just replacing it sometimes doesnt fix issure, they needs to be reprogrammed, and in some cas3s module and or sensor replaced. GM did all that on mine, many times. And stll it goes bad. I miss my 07 Tahoe LTZ

 

[Slow5.0]

Ok. Update. Dealer says its corrosion in liftgate connector on top of liftgate. I found part # 84156191. Here is pics of "corrosion" bottom left corner. Funny part is they say it may be fix for this liftgate problem, it may be. So my extended warranty CNA dont cover corrosion and fix is $709, $135 for parts $574 for labor. I told him ok ill pay you $709, but if it start doing again, im bringing car and 5 gal of gas with me and burning right at your parking lot

 

[Tylus]

All of my failures were NOT corrosion. The lift itself stripped out and couldn’t handle the weight.

that is BS

 

[Tylus]

And what takes 3hrs of labor? I can take that back panel off and repin the connector in <1hr

sounds like they’re taking you on a joy ride

 

[Slow5.0]

I have both upper and lower panels off before. Its like 10 min job. I think they wanted to charge me for diagnostic lol. I tild then ill get part and ill installed. And ill get it for $85. This steelership it known to charging people for random sh$t. I couldnt go to Laura GMC in IL across bridge since they were booked for 3 weeks and this Dave sinclair dealership was one that replaced motor 3 months ago so i took it to them. I also think its weight of tailgate that kills screw setup motor. A few years ago i took one apart. Took me 1 hour to get to darn motor. Its smaller than my RC moyor. I have no idea how that small motor can turn that heavy spring inside and lift liftgate
Also it maybe hinge or hinges not sitting right and binding while oppening

 

[Slow5.0]

Ok. Got car back. Dealer installed new harness 84156191, also replaced 5 pins on male side 85132609 that sits on roof side. Also installed new sh9ck motor and reprogram module, looks like module didnt know what to do when motor start oppening and closing. It works for now. Also dealer sealed new rubber plugs on new harness. Out of door $420. I told them ill pay you whatever just fix damn thing for good. Let see how long this fix gonna last

 

[Slow5.0]

New harness, didnt fix problem, its doing again. Its Liftgate Actuator like every other 10 times. If you leave liftgate ooen a fee times more than 5 min, Liftgate Actuator will go bad. Now i have to deal with GM dealrr again. This time ill demand a refund for harness that i paid last time

 

[Tahoe14]

That stinks hope you get it fixed.

 

[Slow5.0]

New liftgate motor and its fixed again. Til next year

 

[Tahoe14]

Glad you got it fixed.

 

[Slow5.0]

Glad you got it fixed.

For another 12 months like every other time
Looks like you you dont leave tailgate up more than minute at the time it may last longer. GM screw up on this design of motor and strut in one unit. 07-14 Had better setup. Never had problem in with liftgate on my 07 Tahoe LTZ and Tahoe had 120k miles when when i bought 16 Yukon Denali

 

[BlaineBug]

My 2019 has only 2 large struts, 1 per side, with the driver side strut having an electrical connection. I noticed that suddenly today it wasn't wanting to open more than about a foot, and then closing. It needed help to raise fully, and the motor sounds like it is being strained more than usual. The only recent changes are a hand wash last week when it was in the 70s-80s, and today it was in the 30s and blustery.

 

[Slow5.0]

Neweat update. I was tired paying hi prices on GM strut so i decide to give amazon cheep stuff. $82 for both

https://a.co/d/5m7zKDw

Only difference is harness rubber plug is different than factory buy it fits in hole. You could reused OEM if you like. Lets see how long this one gonna last. OEM struts only last almost a year

 

[BlaineBug]

My 2019 has only 2 large struts, 1 per side, with the driver side strut having an electrical connection. I noticed that suddenly today it wasn't wanting to open more than about a foot, and then closing. It needed help to raise fully, and the motor sounds like it is being strained more than usual. The only recent changes are a hand wash last week when it was in the 70s-80s, and today it was in the 30s and blustery.

Since I was notified that this thread was updated, I want to make a note that whatever issues I experienced last year, no longer occurred last winter and have not re-appeared since my post from April 2023. Weird.

 

[Slow5.0]

For some reason mine always start acting up when is cold. Same thing happened last winter. Now its getting worse. Thats why i teplaced for like 7 times since 2016 lol. Sometumes under warranty sometimwa i just dont have time to tale to dealer ti do it under warranty even i still have 1 year left on aftermarket CNA 10 years 100k miles

 

[BlaineBug]

For some reason mine always start acting up when is cold. Same thing happened last winter. Now its getting worse. Thats why i teplaced for like 7 times since 2016 lol. Sometumes under warranty sometimwa i just dont have time to tale to dealer ti do it under warranty even i still have 1 year left on aftermarket CNA 10 years 100k miles

That's what I expected however during a -10 January cold blast I experienced no issue, somehow.

 

[Slow5.0]

I tend to leave mine open for some time when working on my semi truck. I think that kills motor faster