Answer
Sep 01, 2025 - 07:50 PM
Doing a coolant flush on a 2012 Buick Verano isn’t too bad — just takes a bit of time and care. Here’s a basic rundown:
- Let the engine cool completely. Don’t mess with hot coolant — it’s dangerous.
- Pop the hood and remove the radiator cap. This helps the system drain easier.
- Find the lower radiator hose (passenger side, underneath). There’s no drain plug on a lot of these, so you’ll need to pull that hose off to drain the coolant. Have a big drain pan ready — it’ll come out fast.
- Once it drains out, reconnect the hose and fill the system with distilled water. Run the engine with the heat on full blast for a few minutes to circulate it.
- Shut it down, let it cool, and drain again. That’ll get most of the old stuff out.
- After that second drain, fill it back up with the proper 50/50 mix of Dex-Cool coolant and distilled water. Burp the system by squeezing the upper radiator hose and topping off as needed.
- Some Veranos have a bleeder xxxx near the thermostat housing — open that slightly while filling to help let trapped air out.
Keep an eye on the coolant level over the next couple drives and top off if needed.
If you want the full procedure with system capacity, bleed instructions, and torque specs, you can find those here 👉🏻 2012 Buick Verano Service & Repair Manual. The manual includes step-by-step instructions, clear images, and exploded-view illustrations to help you do the job properly.
