Question: how to unjam gbc laminator?
Answer: Turn off the machine and unplug it. Doing so will prevent the motor from burning out so you'll be less likely to have to repair or replace your machine.
Try to gently pull out the pouch. ... 
Put the laminator in reverse mode. ... 
Open the laminator. ... 
Check for a release lever. ... 
Open up the laminator yourself using tools.