HVAC not working properly?

2001 CHEVROLET SILVERADO
106,700 MILES • V8 • 4WD • AUTOMATIC
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JMAY629
  • MEMBER
  • 1 POST
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.
Jun 3, 2023 at 5:07 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
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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Jun 4, 2023 at 10:28 PM
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