Why is my trucks AC hissing?
Why is my trucks AC hissing?
Hissing or Whistling But a persistent hissing or whistling sound could be a sign of a refrigerant leak. A refrigerant leak could occur in your refrigerant lines or in your internal valve. Leaky refrigerant lines could also make a bubbling sound.
Why does my GMC air conditioner not work?
GM air conditioning problems are caused by condensers and discharge lines, at least according to a proposed class-action lawsuit that includes the following long list of Cadillac, Chevy and GMC trucks and SUVs. This problem has popped up in the following GMC generations. Most years within a generation share the same parts and manufacturing process.
Why does my Chevy A / C condenser keep leaking?
GM went with a condesor that is allegedly defective because it allows air to enter the system. Water vapor in that air will freeze and, as a December 2017 class-action lawsuit describes, cause backups that lead to excessive internal pressure.
Is there a recall on the GM air conditioner?
While GM has reportedly recalled all of its previous faulty inventory stock of the affected parts, no vehicle recall has been issued for those drivers stuck with failing GM air conditioning.
What to do if your AC pressure gauge is not working?
The system is overcharged, there’s a lack of airflow across the condenser (clogged fins, radiator/condenser fans not working or not working at the proper speed), or you have air and moisture in the system. 1. Check the front of the AC condenser (it’s in front of the radiator) to make sure the fins aren’t clogged.
Why is my AC not working on my GMC Sierra 1500?
Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my GMC Sierra 1500 has air conditioning problems?
GM went with a condesor that is allegedly defective because it allows air to enter the system. Water vapor in that air will freeze and, as a December 2017 class-action lawsuit describes, cause backups that lead to excessive internal pressure.
The system is overcharged, there’s a lack of airflow across the condenser (clogged fins, radiator/condenser fans not working or not working at the proper speed), or you have air and moisture in the system. 1. Check the front of the AC condenser (it’s in front of the radiator) to make sure the fins aren’t clogged.
How to test AC pressure with a manifold gauge?
How to test AC pressures with a manifold gauge. 1, Set the AC controls to MAX and RECIRCULATE 2. Blower set to HIGH speed 3. Close the doors. Windows can be open. 4. Once you attach your gauges and start your engine, keep RPMs steady at around 1,200 to 1,500 RPM. Refer to this chart for AC pressure gauge diagnosis. What the AC gauge pressures mean
