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HVAC not working properly?

Tiny
JMAY629
  • MEMBER
  • 2001 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 106,700 MILES
I have 2 HVAC issues.

1- I charged the A/C yesterday and the air still isn't very cold like it should be.

2- the air flow doesn't change from defrost to vent when I change the selector.
Saturday, June 3rd, 2023 AT 5:07 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

The airflow direction is controlled by a mode door actuator. It is located on the passenger side of the HVAC unit under the dash. See pic 1 below. When you switch air flow direction, see if you can feel that moving.

As far as the A/C, are you sure it is fully charged? Also, take a look in front of the coolant radiation at the condenser. Make sure it is clean and there are no obstructions.

Do this and let me know what you find.

Take care,

Joe

See pic below.
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Sunday, June 4th, 2023 AT 10:28 PM

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