Where is the mode door actuator located in a 2002 Park Ave? HVAC air blows from defrost and foot ducts

ID Status Date Year Make Model Transmission Type A/C Controls Public/Private
#13371 Closed 2002 Buick Park Ave base public

HVAC air blows from defrost and foot ducts if set to Auto hvac. Cold if set to cold, hot if set to hot. If set to hvac manual high speed fan – air will blow from center ducts for about 1 minute and then will blow from Defrost and floor. Have replaced electronic programmer PN 9353514 with used programmer – no change. Tested right & left side blend door actuator(adds heats to right side with call for heat) test good. Have tried Sparky’s calibration procedure as well as 4 more calibration -no change in hvac.
1: Do you have a Factory calibration procedure for 2002 Buick Park Ave?
2: Have you found any repair solution for this condition?
3: Where is the mode door actuator located in a 2002 Park Ave? Both left and right blend door actuators work.
Note: Condition did not exist prior to weak battery being replaced.

Sparky

Calibration Procedure without a Scan Tool

  1. Turn OFF the ignition.
  2. Remove the battery positive voltage circuit fuse of the Instrument Panel Control Module. The fuse should be labeled as CSTR/SBM and is located in the instrument cluster fuse box behind the glove box.
  3. Important:  The module memory will not clear if the battery positive voltage circuit fuse is installed in less than 60 seconds.
  4. Wait 60 seconds.
  5. Install the fuse.
  6. Start the engine and allow it to run for two minutes.
  7. Do Not Touch anything during this time.
  8. Turn the ignition off for at least ten seconds but no more than thirty seconds.
  9. Restart the engine and test the system operation.

If this does not correct the condition the problem will likely be in the actuator  itself. It is located under the driver’s side of the dash and comes as an actuator, bracket and cam assembly. As far as I know it is only available as a GM part and the part number is 89018383. I have never changed one so I cannot offer further insight into that. I strongly recommend having the system tested to make sure the actuator is the problem before replacing.

Thanks for the info very much. The Calibration Procedure did not correct the problem, tried it twice.
I cannot physically get to the actuator bracket and cam assembly PN 89018383. I will have it tested by a scan tool at some time in the future. I am 73 years old so I am not as agile as I once was. Thank you so much for the information, without the info I would be very frustrated. I have taken the problem as far as I can. So again thank You and I will sign up for your paid service. Le

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