At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
There could be a freon leak which would stop the compressor clutch from coming on. If the inside fan comes on and it blows thru the correct vents then I'd suspect a low charge of freon .
Add Freon see if it comes on then its low on freaon leak somewhere if not may be a bad low pres switch also do the fans come on when you switch to ac ?
Yes , there is a relay . It is energized by the PCM - engine computer . When you push the A/C button on the climate control panel ,it sends a voltage input to the BCM or strait to the PCM .When the PCM see's this it will energize the relay ,if it see's the correct input from the high an low pressure switch . The Trainer 40 When the compressor won compress
Check basics first: is there hot water being fed to the heater core?,does the valve work (open/close)that feeds water circulation to the heater core????. Hope this helps. Alberto
Do you have dual zone cooling? If so, you have a bad air blend motor. I had to replace 3 on my 07 Impala and the basic geography of the part locations are the same for your Lucerne. There is one to the left of the radio well back into the dash, one to the right and one by the passenger side kick panel, near the door hinge. They are not for the faint of heart to replace. I had to replace mine because they were clicking and sounding obscene. They run about $25 each. Determine which is faulty using this rule of thumb: Drivers side uncontrollable: replace far left blend motor Passenger side uncontrollable: replace one just to the left of the glove box. If you cannot switch between outside air and recirc, replace the one to the right of the glove box. The blend control motors look eerily similar to a quartz clock movement you'd find in a hobby store, however, that is where the similarity ends.
×