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2002 GMC Envoy slt: blows..driver side, ac on passenger side..actuator

 
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  • Answered by:Super mechanic
  • ASE Certified Technician
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Customer Question

My 2002 GMC Envoy SLT 4.2L, when using AC, heat blows on driver side, AC on passenger side, Its been sugested I install new left side actuator but can't find installation instructions. Also my thermomster for outside temperture always show 5o degrees, i was advised to install an ambient temperture sensor, again cannot find installation instructions.
I am a do it yourself person if I have tools to do a minor repair. Do you agree with the advise I gotten to fix the problems? Where would you reccomend i seek for repair instructions?

Thanks,
Archie

 

Country: United States
Make: GM
Model: Envoy SLT
Year: 2002
Engine: 4.2L

Submitted: 346 days and 15 hours ago.
Category: GM
Value: $18
Status: CLOSED
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Expert:  Super mechanic replied 346 days and 14 hours ago.

Hello and welcome to Just answer.com, Super mechanic here. Please DON’T hit accept until you are completely satisfied with the answer. If you need any more on it just let me know. About your vehicle.

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I would start with the ambient temp sensor. They can have some strange effects on the HVAC system.

Ambient Air Temperature Sensor Replacement
REMOVAL PROCEDURE





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  1. Remove the grille.
  2. Remove the ambient air temperature sensor (1) to the headlamp assembly.
  3. Remove the ambient temperature sensor from the panel assembly.
  4. Disconnect the electrical connector from the ambient air temperature sensor.
INSTALLATION PROCEDURE





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  1. Install the ambient air temperature sensor (1) to the headlamp assembly.
  2. Connect the electrical connector to the ambient temperature sensor.
  3. Install the ambient temperature sensor retaining clip to the headlamp panel assembly.
  4. Install the grille.

 

 

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THEN, try a recalibration of the actuators. The dash has to come out to replace the left side temp door actuator, (as per instructions) and if needed I can put that in a PDF file.

 

 

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Re-Calibrating Actuators - Primary

When replacing the HVAC control module it will be necessary to allow the HVAC control module to perform a re-calibration process. When installing the HVAC control module be sure to perform the following:

  1. Place the ignition switch to the OFF position.
  2. Disconnect the scan tool.
  3. Install the HVAC control module.
  4. Re-connect all previously disconnected components.
  5. Place the ignition switch in the RUN position.
  6. Wait 40 seconds for the HVAC control module to re-calibrate.
  7. Verify that no DTCs have set as current DTCs.

When replacing the motor assembly it will be necessary to allow the HVAC control module to perform a re-calibration process. When installing the motor assembly be sure to perform one of the following:

Preferred Method (W/Scan Tool)

  1. Clear all DTCs
  2. Place the ignition switch in the OFF position.
  3. Install the motor assembly.
  4. Re-connect all previously disconnected components.
  5. Place the ignition switch in the RUN position.
  6. With the scan tool, initiate the Motor Re-calibration feature of the HVAC module Special Functions menu.
  7. Verify that no DTCs have set as current DTCs.

Alternate Method (W/O Scan Tool)

  1. Clear all DTCs
  2. Place the ignition switch to the OFF position.
  3. Disconnect the scan tool.
  4. Install the motor assembly.
  5. Re-connect all previously disconnected components.
  6. Remove the HVAC B fuse for a minimum of 10 seconds .
  7. Re-install the HVAC B fuse.
  8. Place the ignition switch in the RUN position.
  9. Wait 40 seconds for the HVAC control module to re-calibrate.
  10. Verify that no DTCs have set as current DTCs.



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Customer replied 346 days and 14 hours ago.

 

Please send the PDF instructions for removing and installing left side actuators, and is there two wire connections on the ambient outside temperature sensor?

Accepted Answer

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Expert:  Super mechanic replied 346 days and 13 hours ago.

There should be one connector with 2 wires in it.

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The instructions for the actuator are >>>> HERE <<<<<<<

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The instructions for the dash are >>>>>> HERE <<<<<<

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Air bag DISABLE and ENABLE

Thanks

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PLEASE NOTE; YOU MUST HIT THE ACCEPT BUTTON TO COMPLETE YOUR TRANSACTION AND CREDIT YOUR EXPERT

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Expert TypeASE Certified Technician
Category: GM
Pos. Feedback: 97.8 %
Accepts: 513
Answered: 4/28/2012

Experience: ASE Master tech, 30 years experience GM certified

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