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I have a 2004 Chevy Suburban 2500 4X4 and the service four wheel drive light comes on occasionally and then goes off.

Sometimes the light will stay on all day or it will come on for a few hours then it goes out. It will go for a week sometimes and not come on. I have replaced the electronic shift control buttons on the dash, and that didn't solve anything.

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There should be a sensor on one of the drive axels mainly on the front

Posted on Jan 22, 2013

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Posted on Jan 02, 2017

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SOURCE: transmission

I had that problem in my 1998 Blazer. There is a module on the passenger side of the truck, next to where the passenger right foot be. Remove the side kick panel to get to module. Disconnect battery before unpluging and pluging new mudule in. This unit controls the electronic switching between 2 and 4 wheel drive..Wes

Posted on Aug 27, 2008

  • 33 Answers

SOURCE: 1994 chevy s10 blazer 4x4 push button type

small sylinoid on the top of the transfer case needs replaced. easy to do. it has three vacumelines going to it just trun out and replace like a bolt.

Posted on Dec 13, 2008

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SOURCE: 98 Chevy K1500, four wheel drive floor shifter won't engage.

I had the same problem with my 98 z71, I put the floor shifter in neutral, and let the truck roll backwards a little bit, BE CAREFUL, with the floor shifter in neutral the truck will roll, regardless if the shifter on the steering column is in Park, use caution, make sure there is no one around your truck and you are inside of it and out of the path of doors and tires,

Posted on Dec 17, 2008

  • 59 Answers

SOURCE: shift indicator light on dash

Check the connection of the small light on the back of your I.P.C. if this looks good you need a new I.P.C. (gauge cluster)

Posted on Mar 15, 2009

  • 45 Answers

SOURCE: I tried to put a 2001 chevy suburban 2500 in four

check the actuator in the front diff to see if it is working

Posted on Jul 12, 2009

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2004 Chevy trailblazer indecater light on dash are not on and service four wheel drive light is on only have my specker works for the radio and the four wheel drive will not engage. But started my...


Elizabeth: It could be the power train module. This is a computer that tells the drive train everything (like what gear to be in and how much gas to add). Part of the power train module goes to your dash lights. It is usually located underneath the center console, or under the driver's seat or sometimes under another seat. You can go to the wrecking yard, get one that is for your trailblazer and try that.

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sometimes after using four wheel drive the light stays on you can put in reverse and it usually goes out if not the sensor maybe bad its located on the front axel mine had a broke wire

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check the actuator in the front diff to see if it is working

Jul 12, 2009 | Chevrolet Suburban 2500 Cars & Trucks

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If you have push button 4-Wheel Drive, it is recommended that you use it every once in a while, in order to keep gunk, rust, and corrosion to build up on moving parts. The mostly likeley (though not definite) reason would be that you let the 4-wheel drive unused for so long that corrosion has built up on the parts and the actuator that engages the 4-Wheel Drive doesn't have the power to engage it past the corrosion. You'll need to take it in to be cleaned, or to have parts replaced. In the future, every month or so, engage 4-Wheel Drive and drive around in some mud, grass, sand, or any other loose ground for a bit, just to keep the parts moving and clean.

The service Four wheel drive light is to alert the operator the system is not being read properly by the ECU.

If the ECU loses contact with or position of the Transfer case actuator motor the service light will come on. Same thing goes for the front diff actuator.

So it may be a bad switch, sensor, or an actual problem in the 4WD linkage. This is not a Oil Change light that you can ignore a few extra weeks - it indicates a problem that should be taken care of ASAP to avoid costlier problems down the road.
Thanks for using FixYa - a FixYa rating is appreciated!!

Feb 21, 2009 | 2004 Chevrolet Suburban

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if it is electronic there is probably something wrong with the wiring..

but if it is manual...it might be the actuator........



Feb 11, 2009 | Chevrolet Suburban 1500 Cars & Trucks

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2004 Suburban 4 wheel drive


set as default most likely either that or computer error. please email me at meanness628@aim.com with any other info or questions

Sep 29, 2008 | 2004 Chevrolet Suburban

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