2007 GMC Yukon Denali cooling system repair 3 way heater core fitting

In this video I travel to a customer's house to fix his 2007 GMC Yukon Denali that has a cooling system issue. Per him, his car was leaking coolant and he paid his neighbor to fix it. The neighbor scratched and bent the heater core fitting, and a nearby metal pipe and destroyed the o-rings inside the plastic 3-way fitting attempting to replace the new plastic fitting the owner purchased.

Essentially, the owner paid someone to do more damage to his car and break his new parts. I fix the car properly to the best of my ability after the owner purchased new parts again for me to properly fix the coolant leak.