Created on: 2025-09-02
This video shows you how to install a new TRQ thermostat and housing in your 2006-2010 Hummer H3 3.7L.
13mm Socket
Funnel
Torque Wrench
Socket Extensions
Pry Bar
Jack Stands
10mm Wrench
Safety Glasses
Coolant Funnel Set
Pick
Sandpaper
Gloves
Flat Blade Screwdriver
Paper Towels
Wheel Chocks
19mm Deep Socket
Hose Clamp Pliers
10mm Socket
Drain Pan
Transmission Fluid
Ratchet
Floor Jack
Swivel
1/2 Inch Impact Gun
This video shows how to drain and refill the coolant to access and replace the thermostat. Follow our expert steps to do this job yourself