liftgate locks but won’t unlock, help!

[Lorenzo33]

Hey y’all new to the tahoe community, I just picked up a 2003 tahoe and i had to replace the liftgate motor and it works to an extent. I can lock it with no issue and if it’s unlocked (manually) i can open the liftgate/glass window but once it’s locked it doesn’t unlock. Is it a fuse potentially? if so which one is it?

 

[Fless]

Do yourself a favor and download the owner's manual here: https://www.chevrolet.com/support/vehicle/manuals-guides

Do the doors lock and unlock correctly?

There's an Unlock relay in the fusebox that's accessible by opening the driver's door. I'm not sure if that's for the liftgate or not but take a look:

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

As stated above, start with the easy troubleshooting, and see if it is a relatively simple issue to fix.