Question about 2003 Pontiac Aztek

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AWD not functionning

The All Whell Drive on my Aztek dosen't seem to work anymore, i see ahuge difference when turning and overall driving experience, also seemto use more gaz and have less power, is there any way to know if itsthe computer that no longer activate the rear clutch or if thediferential/clutch no longer work? is it easily reparable, ive done allthe mech on my car so far but the Aztek AWD look weird to me. thanks

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Is the AWD light on showing it is disabled? If that is the case, I have the same problem on my 03 and it turned out to be the Rear Wheel Hub(s). $500.00 at a dealer or $129.00 at Auto Zone. Not to difficult to replace, just sits behind brakes and stuff. Another sign if this is your case is that the rear will sound louder that normal, kind of like will sound like that rear has no insulation in it and you can hear everything.

Posted on Aug 08, 2009

  • connie_hullt Aug 08, 2009

    Does your rear make noise only when your turn? If so you will need to change the fluid in your dif, this is to be done approx once a year, depending on how you drive it and your can only get the fluid from Pontiac / GMC dealer. $100.00 for the fluid. Easy to drain and replace.

    P.S. Owners manual shows the drain bolt to be in a different location on the dif, but there is really only one bolt you can remove to drain.



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1 Answer

Why does the all-wheel drive keep disengaging when you need it?

Is the All-Wheel Drive Disabled Indicator on ?
An ABS DTC may cause the AWD Disabled light to illuminate. Check for ABS DTCs if no AWD fault is present.

The AWD data list can be used to assist in determining which type of fault is causing the AWD Disabled Lamp to illuminate. with a scan tool, verify the above data displays are within specification.
AWD temperature disables can be caused by an open circuit.

Using a scan tool, select the Body - Instrument Panel Cluster - Special Functions - Lamp Test mode. In the Lamp Test mode you can turn on or off the instrument panel indicators. All indicators will turn ON when commanded on and OFF when commanded off. The AWD DISABLE indicator should turn on or off as commanded.
If the AWD DISABLE indicator is always ON or always OFF, replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages and Console.

The AWD disable lamp illuminates when one of the following conditions exists for 5 seconds:
The PCM commands the solenoid ON and the voltage feedback remains high, B+.

The PCM commands the solenoid OFF and the voltage feedback remains low, 0 volts. This condition is present for 3 key cycles.

The PCM detects fluid temp is too high.

You need to have this hooked-up to a professional grade scan tool.

Mar 02, 2015 | 2003 Pontiac Aztek

1 Answer

I posted about my AWD quit working on my 1990 Astro AWD.

What makes a car AWD is the fact that there is a diff in the transfer case in the gear box . This allows the front diff and the back diff to operate at different speeds from the road surface just as one wheel can go faster in turns than the other side.. To say that the AWD is not working would mean that it is not going any where as the rear or the front will have no drive because the diff will not be operating as a diff.

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2001 Aztek rear brakes thunking noise.

rear sway bar link pins and bushings

Oct 18, 2012 | 2001 Pontiac Aztek

1 Answer

I have a 94 grand cherokee that I had to drive on a donut. There has always been issues with turning I was told due to awd. While driving down the highway it starting making very bad clanking sound and...

The transfer case on a AWD unit has a device that is referred to as a viscuss coupling and the issue comes in when you run a different size tire on any axle versus the others. Due to it being awd and the spare was probably a smaller overall diameter than the other tires. When this happens it causes two different turning speeds from one axle vs the other and burns out the clutches in the viscuss coupling.. You may not have destroyed it but odds are its gonna cause vibrations and drivelline chatter once you get it back on the road and the awd will prob not operate properly. you are going to probably have to have the tcase overhauled or replaced..
Hope this answered your questions

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2001 Aztek showing the awd is disabled. Why and


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Is this van FWD or RWD?

It is most likely front wheel drive, some are all wheel drive.

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I have a 2004 Pont. Aztek. The AWD Disabled light is on

AWD Light is caused by your Rear Wheel Hub(s) one or both are going bad. Dealer cost is $500.00 part at Auto Zone is $129.00. Not to difficult to replace if you are some what mechaniclly knowledgable

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1 Answer

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Call the dealership. I seem to remember that Pontiac had a recall for this problem just recently where the antilock brake system would lock op and the system caused people to get into accidents. This is a manufacture defect

Feb 16, 2009 | 2004 Pontiac Aztek

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