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What causes service 4wd light to come on in a 2006 hummer h2

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  • Hummer Master
  • 15,575 Answers

Could be any number of thing's , having the 4X4 control module checked for code's is the first thing you should do , before just replacing parts. Do you know what a DTC is ? Diagnostic trouble code .
DTC B0790
DTC B2725
DTC C0306
DTC C0327
DTC C0329
DTC C0359
DTC C0550

Posted on Apr 13, 2018

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Ajkill

Anand Kumar

  • 2035 Answers

SOURCE: hummer h2 2003 55000 mill

Remote the battery wire from the car for 20 minutes make and plug it back this will reset the computer of the car if the light is on you need to service center and get it checked....................

Posted on Jun 08, 2008

Anonymous

  • 218 Answers

SOURCE: 2003 Hummer H2 overheats while idling in Park

NED TO HAVE THE CODES FOT THE CHECK ENGINE LIGHT READ.THE CODE WIL LEAD U IN THE CORRECT DIRECTION.GET BACK TO ME W/THE CODE.

Posted on May 13, 2009

Anonymous

  • 1 Answer

SOURCE: Cost for servicing the air suspension on H2

i bought a new complete pump tray with all controls from red neck auto parts online for $650.00 new 1 year warranty

Posted on Aug 01, 2009

Anonymous

  • 12 Answers

SOURCE: 4WD switch not working on a Hummer H2

Same thing happened with my H2 2003 model, no lights above the 4wd buttons and i can't switch between high and low 4wd.
did u know what is the problem ?

Posted on Sep 08, 2009

Anonymous

  • 12 Answers

SOURCE: change light on 2006 hummer h2

it can be easily changed by removing the plastic cover then u will see the light bulb, don't try to change it from the back, it wont open :)

Posted on Sep 08, 2009

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2 Answers

Why is the service 4WD message on all the time and diff lock light flashes and dos not lock?


Hummer 4wd service light reset Questions & Answers - Fixya

www.fixya.com > Forum > Tags > 4wd service light reset
Hummer h2 2003 55000 mill ... service 4wd the liht is on all time Remote the battery wire from the car for 20 ... My 2006 H3 will not come out of 4 wheel drive?

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If the tail light goes out when the brake light goes on, you have a bad ground.

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2006 Hummer H2 left rear bumper turn signal / brake light does not work. Bulb is good, same light works as tail light, but doesn not work as brake light or turn signal. Problem is also present in trailer...


if someone added an aftermarket item to your lights, they may not work correctly, have it looked at by a professional who does that type of thing for a living.

Oct 15, 2013 | 2006 Hummer H2

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2003 h2 hummer is having shifting problems with transfercase. and the shifter moves freely even if the truck is off with out using break pedal


I had this problem with my 3002 H2, it was the transfer case. The OEM Transfer case has a plastic shifting fork. this wears out and eventually will cause the transmission to go out, I purchased a re-built transfer case on-line of $700.00 and had it installed for $500.00. problem solved....and the re-built has no plastic shifting forks.

Mar 27, 2013 | 2003 Hummer H2

1 Answer

Do you drive.in two wheel or four wheel drive, how do you change.to two wheel drive?


The Hummer H2 and H3 are both all time 4WD. There is no way to put it in 2WD. Now, you can select 4WD High or 4WD Low. You can also, if your vehicle is equipped with it, lock the front or rear wheels through the differential selector. This is one of the primary reasons Hummers get terrible gas mileage is because they are always in 4WD.
The only other solution is to swap the transmission to an Allison 6Spd, which is often done with diesel conversions, and they usually give you a 2WD option, and can get up to 25 MPG out of an H2.......but that conversion is about $30k.

Jun 23, 2011 | 2005 Hummer H2

2 Answers

Am looking for a repair maual for a 2003 Hummer H2 that has an electrical diagram in it?


Go to faxonautoliterature. They carry the original dealer service manual for your Hummer. It will havwe wiring diagrams in it. I have used them before and had excellent service. Hope this helps.

Nov 29, 2009 | 2003 Hummer H2

2 Answers

4WD switch not working on a Hummer H2


Same thing happened with my H2 2003 model, no lights above the 4wd buttons and i can't switch between high and low 4wd.
did u know what is the problem ?

Mar 25, 2009 | 2005 Hummer H2

2 Answers

Hummer h2 2003 55000 mill


Remote the battery wire from the car for 20 minutes make and plug it back this will reset the computer of the car if the light is on you need to service center and get it checked....................

Jun 08, 2008 | 2003 Hummer H2

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