Can Someone Tell Me What Codes 51,54 And 56 Mean.i Did The Test On My Hvac And These Numbers Started Flashing.my Heater Blows Hot Air On The Passenger Side And Cold Air On The Drivers Side.thanks Pete

I have a same problem on my 2001 GC I6,
when AC is ON, passanger side gets worm air and driver side - cold.
Can't get any codes to show up, don't know how to do that, though.
Any help would be appreciated.

I have a same problem on my 2001 GC I6,
when AC is ON, passanger side gets worm air and driver side - cold.
Can't get any codes to show up, don't know how to do that, though.
Any help would be appreciated.


I don't know if this procedure also applies to GC models without dual zone climate control, but if you have this system here's how to get the error codes for the HVAC :

1) Turn on the system
2) Press and hold down the a/c and recirc. buttons together
3) Turn a temp. control dial one click
4) Release the a/c and recirc. buttons. The error codes should now
flash across the digital display screen.