Question about 2003 Hummer H2

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Stuck in 4wd low

My h2 is stuk in 4wd low

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While rocking gently try and disengage it from low,

Posted on Sep 12, 2009

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Posted on Jan 02, 2017

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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?

Sep 22, 2015 | 2006 Hummer H2

1 Answer

My 2005 hummer h2 will not shift into 4wd high or low the 4wd button for everyday driving is lit up but when I try and go to 4wd high or low or lock it just flashes the light and nothing happens


When the 4WD lights flash on and off, this indicates that there are 4WD-related trouble codes in the 4WD control module. Sometimes 4WD lights never illuminate.
The first step in diagnosing the system is to establish communication and retrieve trouble codes from the control module. After retrieving the codes, write them down, clear the codes and retest to see which codes are regenerated. False codes can be set if a component is disconnected when the key is turned on.
If the 4WD lights flash on and off, and no codes are found in the 4WD control module, try clearing the codes anyway. After a certain amount of key cycles, the codes will normally clear from the 4WD control module, but the module will not respond to commands until it is re-initialized by clearing the codes or disconnecting the battery to erase its memory.
If your scan tool will not communicate with the 4WD module, first verify that the scan tool has the proper software and the latest updates. If it does, then try another scan tool. If it still has no communication, the power and grounds that are supplied to the module will need to be tested. See if the scan tool will communicate with the other modules on the shared communication network. If they're OK, check the harness from the data link connector (DLC) for an open circuit to the 4WD module.

Apr 23, 2014 | Cars & Trucks

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

1 Answer

1997 F-150 STUCK IN LOW RANGE 4WD


Clean the hubs and adjust the linkage.


Thanks for using FixYa - a 4 THUMBS rating is appreciated for answering your FREE question.

May 12, 2010 | 1997 Ford F150 Regular Cab

2 Answers

Just got H 2 2005 4 buttons 4 the 4 wheel drive


Use 2 wheels, the other 4wd low ,for climbing at slow speeds: 4wd high, for driving on low traction roads,like mud or snow,at medium speeds: 4wd auto full time all wheel drive, for highway speeds on slippery surfaces, like rain or light snow.

Jan 12, 2010 | 2005 Hummer H2

2 Answers

Stuck in Lo Range 4WD. Suggestions?


Try key in run position(without starting it) and try to shift it into 4wd high with the shift lever in neutral.

Apr 26, 2009 | Chevrolet Suburban 1500 Cars & Trucks

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

Transfer lever positions on 85 hilux 4x4


h2 should be left and all way forward h4 will be straight back from h2 and l4 willbe right and forward of h4

Sep 17, 2008 | 1985 Toyota 4Runner

1 Answer

Help!


its normal. its also bad for the drivetrain to use it in 4wd on dry pavement

Jun 13, 2017 | 2003 Hummer H2

1 Answer

Transferbox problems


It's actually stuck on the 4xL, if you keep driving it it might coz a big damage to ur 4wd gear box.
you should change the transferbox (it cost here in Dubai around 1350 US$ with labor charges).
it happened to me 2 months back.

Aug 26, 2008 | 2003 Hummer H2

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