Buick - CJ2 Automatic HVAC Systems (1999)

This video, taken from Buick's Know-how Series (KH-222), discusses operational characteristics of CJ2 Automatic HVAC Systems for various Buick models. Topics covered include: the different versions of CJ2 HVAC systems, design history, control and display features, components, and diagnostics/troubleshooting.

[@BAlvarez33]

When you replace any of these actuators disconnect the battery for 5 minutes and then reconnect. Turn on the ignition for 5 minutes. This will allow all the actuators to go through the recalibration process. Then go through the mode adjustments using the controls. This worked for me.

[@TagGeorge]

Nice way to over complicate a HVAC system!

[@jasonbengel]

I can't take this seriously after the Rockwell Retro Encabulator video.

[@marcomartinez8496]

This was a ridiculous thing they made why not just a ac button

[@jasonbengel]

Planned obsolescence. Having the system stuck blowing freezing air on passenger side and hot air on driver's side ensures that a spouse will refuse to get in during the winter.

[@MrBikedrummer]

Please help! I have a 99 Century limited. The A/C blows stronger than the heat out of all vents. When I start the temperature at 60° it blows very strong until I bring the desired temperature up around 75, and then the air flow slows down while producing heat. I don't know if this is normal or not. If not, I'd like to know the cause, and if it's one of these doors and actuators, which would it be and where? It's the same flow for all vent settings on heat and stronger on all with AC. I've changed the cabin filter and blower(it was squealing).
I hope someone can help.
thanks

[@MrTheMiguelox]

In auto mode the heat should blow mainly thru the floor outlets, not the dash ones.

[@DeeDee-ny9en]

I have a Buick 1998 lasabre it is stuck on heat how do I fix it

[@Viper81766]

Love your videos. How can I put my 1997 LeSabre hvac into diagnostic mode to show trouble codes ? Thank you