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Chevrolet
Sonic
Climate Control
Heater
Hose
Replace/Remove
Heater core hose diagram needed?
2012 CHEVROLET SONIC
50,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
CORY2427
MEMBER
293 POSTS
FOLLOW
I replaced thermostat housing and can’t remember which hose on heater core goes where on housing.
Aug 18, 2024 at 11:50 AM
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JACOBANDNICKOLAS
CERTIFIED EXPERT
110,175 POSTS
Hi,
They don't make a schematic, so I had to. LOL There are two hoses. One is a supply (inlet) and the other is a return (outlet).
If you look below, the first two pics are for the outlet. Pics 3 and 4 show the inlet.
Let me know if this helps.
Joe
See pics below.
Images (Click to enlarge)
Aug 18, 2024 at 8:59 PM
CORY2427
MEMBER
293 POSTS
So, the bottom port of the heater core goes to the top of thermostat port and the top of heater core port goes to bottom of the thermostat port.
Aug 19, 2024 at 5:36 AM
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JACOBANDNICKOLAS
CERTIFIED EXPERT
110,175 POSTS
Hi,
Based on what I'm seeing in the manual, you are correct.
Let me know how things work out for you or if you have other questions.
Take care,
Joe
Aug 19, 2024 at 7:14 PM