Should thermostat be changed if over 5 years old? 4.0 Northstar engine.
Nov 15, 2011 at 2:34 PM
Advertisement
SQM
✓ASE Certified Mechanic
6,383 POSTS
Hello,
It is not required to replace the thermostat for this.
But it can be changed while flushing the cooling system so you will know that the component is new.
This vehicle uses 13 quarts of coolant.
Here is a helpful video on coolant drain and flush:
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.