SPONSORED LINKS

HVAC gurgling noise?

Tiny
DAVID THOMPSON2
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
When I accelerate I can hear a gurgling noise on the passenger side under the dash. I do not think it is the heater core because the heating works fine, I do not smell antifreeze and I do not see any antifreeze. Any advice on what I need to check or replace will be greatly appreciated. Take care, David Thompson
SPONSORED LINKS
Saturday, April 22nd, 2017 AT 3:21 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,567 POSTS
99% of the time gurgling means low coolant and air in the cooling system, the gurgling is the air traveling through the heater core. Check the coolant level on the engine when cold and top everything to the cold levels. Start the truck and let it warm up. Check the overflow reservoir once it is up to temperature. Shut it off and watch the level, it should drop as the coolant contracts as it cools. If the level stays the same replace the radiator cap. It is not allowing the system to operate properly.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Thursday, November 16th, 2017 AT 12:48 PM

Please login or register to post a reply.

Related Noise Gurgle Content

Bubbling or Gurgling Noises
GUIDE
Bubbling or Gurgling Noises
Your vehicle can make bubbling or gurgling noises for a verity of reasons, and can be a signal of various underlying issues within the vehicle. Here is why this phenomenon...
VIEW MORE

Sponsored links