Power liftgate partially opens then closes

[Tarryl Madison]

2007 Denali rear power liftgate partially opens with key fob, console button and handle then immediately closes. Motor appears to be working fine both opening and closing and I can't see where it may be binding up anywhere. Anyone have a clue? If I turn it off on the console, I can open it just fine, but the gate will not stay up. Could it be the shocks are worn out?

 

[gpracer1]

Is there a pinch sensor strip?

 

[PG01]

Def sounds like the lift supports are toast.
They aide the motor to lift and keep gate up, if you can open it manually and it doesn’t stay up its safe to say its time for new ones. Dont keep using the automatic feature itll burn the motor out

 

[intheburbs]

The motor is sensing what it thinks to be an obstruction, so it's reversing. Likely culprit is bad struts, so it takes more effort to open the tailgate, which the motor is misinterpreting as an obstruction.

The struts are cheap and easy to replace. They're like $10 each on Rock Auto.

 

[Tarryl Madison]

Thank ya!

 

[mikeyss]

My Tahoe just did this the other day, except it was 3/4 way up and since I'm short, I was already standing under it getting my bags out of the back. I heard a noise, then the lift gate just slammed down. Hadn't I ducked so quickly, it would have landed on me! I've been afraid to use it since then.

 

[Tarryl Madison]

Bought a pair of off brand struts on ebay for $20 w/free shipping. Everything back to normal. Thanks again guys!

 

[PG01]

Bought a pair of off brand struts on ebay for $20 w/free shipping. Everything back to normal. Thanks again guys!

Glad you got it sorted. Keep an eye on it, new ‘off brand’ struts may not last as long as originals. Strong arm is a good company or oem.

 

[GMCDenali12]

Bought a pair of off brand struts on ebay for $20 w/free shipping. Everything back to normal. Thanks again guys!

Can you help me locate where to replace the struts? I am having the same problem with my GMC Yukon 2012. Are these the ones?
Thanks in Advance