Recirculation Actuator

[djtoothowd]

ok so when i bought my Tahoe (in the Winter) the A/C blew cold and i was told it had been redone last summer. well summer is upon us and wouldnt you know it the damn A/C dont work. i recharged the system with our A/C machine here at work and it didnt help. i jumped the low side switch and still nothing. i took it to have it scanned for codes and found B0229 had been set so i bought a new actuator and replaced it and it still doesnt work. i was hoping maybe it just needs to be reset/calibrated but i cant find out how to do it anywhere. does anyone know how? and if this doesnt fix it what else could it be?

also this may be a dumb question but are both the high and low side service ports on the same line? i can only find 2 and they are both on the high side line to the accumulator about 6" apart from each other. they are 2 different sizes by the way.

 

[bkboatnsleds]

auto or manual hvac system?

 

[djtoothowd]

automatic

 

[bkboatnsleds]

Here is what I can find..
Place the ignition switch to the OFF position.
Connect all previously disconnected components.
With the Mode knob in the PANEL position, press and hold the AC button for 5 seconds.
Rotate the Mode knob fully counterclockwise.
Rotate the Mode knob fully clockwise.
Rotate the Mode knob fully counterclockwise.
Release the AC button.
Wait 40 seconds for the HVAC control module to self-calibrate.
Start the vehicle.