AC help
- Thread starter airshod
- Start date
teamzr1
Supporting vendor
Need a lot more detail
What is not working, the compressor, the HVAC controller, the fan ?
Check fuses for compressor and HVAC unit ?
On the HVAC screen, does it show the correct outside temperature ?
When pushing the Auto or A/C buttons, does it show on the screen as commanding A/C on ?
Check for any error codes (DTCs) with a scanner or code reader ?
What is not working, the compressor, the HVAC controller, the fan ?
Check fuses for compressor and HVAC unit ?
On the HVAC screen, does it show the correct outside temperature ?
When pushing the Auto or A/C buttons, does it show on the screen as commanding A/C on ?
Check for any error codes (DTCs) with a scanner or code reader ?
teamzr1
Supporting vendor
How did you determine the Freon was low, did you use an A/C manifold test gauges connected to the low and high Freon lines ?
How did you charge it and know it did not get overfilled, as if so would also cause incorrect Freon temps ?
Have you measured what the air temps are at the outlets ?
When turning A/C on and turning the temp control knobs, does it show on the HVAC screen that the temp setting is changing ?
I have attached below the GM C6 service manual for HVAC as 2 PDFs will help you debug the problems but make sure using A/C tester that the high and low pressures are correct
How did you charge it and know it did not get overfilled, as if so would also cause incorrect Freon temps ?
Have you measured what the air temps are at the outlets ?
When turning A/C on and turning the temp control knobs, does it show on the HVAC screen that the temp setting is changing ?
I have attached below the GM C6 service manual for HVAC as 2 PDFs will help you debug the problems but make sure using A/C tester that the high and low pressures are correct