Q: AC light on dash

asked by on

The AC light flashes on the dashboard, and the vent blows warm air instead of cold.

GM has a TSB out for this issue. If the system is full, then the negative battery terminal needs to be disconnected to reset the climate control computer. If the system does not work after this, then gauges will need to be put on, and an AC performance check run, to guide the diagnosis. You may want to enlist the help of a mechanic, such as one from YourMechanic, who has the equipment, training, and certification to inspect and diagnose the issues with your AC system.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. AC light on dash

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: speedometer not working

The vehicle would need to be lifted and the cable checked to see if it is turning. If it is, then the speedometer is bad. If the cable does not turn, then disconnect it from the transmission and see if...

Q: Q: noise after oil change

Hello. If this occurs right after the oil change it is because the vehicle was put up in the air to service it. When this occurs the bushings and shocks over extend, which ends up putting them in the wrong...

Q: How long for an AC compressor repair?

Hey there. The replacement would take the average technician about 2 hours of labor to perform this task after evacuating the system of refrigerant to make sure it is not released into the atmosphere. If you do not have the...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...