Coolant leaks after mechanic work was done?

2017 CHEVROLET SONIC
115,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
Avatar
CORESONIC2
  • MEMBER
  • 2 POSTS
At the end of July I had my car listed above in to have the timing belt (tensioner and related parts), water pump, and serpentine belt replaced. A few weeks ago I noticed a coolant leak that I didn't have before. It seems to be coming out of a connector on top of the thermostat housing.
Oct 2, 2025 at 1:27 PM
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.
Advertisement
Avatar
CORESONIC2
  • MEMBER
  • 2 POSTS
Pic for reference
Image (Click to enlarge)
Attached Media
Oct 2, 2025 at 1:28 PM
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
Sorry for the repeat, the site had an issue but it is fixed now, this problem is because the part is made out of plastic not the mechanics fault, just bad timing. The coolant sensor will need to be removed and installed into the new thermostat housing. Let us know how it goes.
Oct 7, 2025 at 11:14 AM
Advertisement