ok, went to the auto shop and gave them the doc on AZC. I asked them to run the following:
Calibrating AZC door actuators
Calibrate the door actuators after making any repairs to the AZC system. To calibrate the door actuators proceed as follows:
1. Turn the ignition on.
2. Set the AZC to automatic.
3. Turn the ignition off.
4. Remove the IOD fuse from the Power Distribution Center. Wait several seconds, and then install the IOD fuse.
5. Turn the ignition on. Do not touch any of the AZC controls for at least one minute to allow the calibration function to run to completion.
AZC self-diagnostic mode:
1. To enter the self-diagnostic mode, depress the a/c and recirc buttons at the same time and hold. Rotate the left temperature control knob clockwise (CW) one detent.
First they wanted to charge me because alldata repair does not include it. ha!ha!
They claim they re-calibrated the system and they ran the diag utility NO problems or error codes, yet i still get 80% flow on the left and 20% flow on the right. They claim this is normal, yet i've had this vehicle since new and it's always blown equal air thru both vents. I'll show them the TSB on reduced air flow. THANKS! wheeling98. I have no clue what else to do without getting nasty about it. hey it worked before it was in the shop and now it's not.
Hey Blake I paid 510 for labor totalling 1345.00 with aftermarket acum, evap, wire harness, blen doors, etc... 1 connector was bad so instead of replacing the connector they charged me 100 for a 10 wire harness. ha!ha!
hey can anyone with a 99 limited with Dual zone air check and see how your air flows thru the vent -