Question about 2003 Hummer H2

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Hummer h2 2003 55000 mill

Service 4wd the liht is on all time

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  • Anonymous Dec 25, 2008

    my truck is having the same problem did it work to unplug the batterie end did you found the reason why this appen its funny because my truck seems to work whell tank you

  • dznupe Jan 08, 2009

    My wife ran out of gas! and after putting gas into the SUV the car will not tirn over and we replace the battery and iys still doing the same thing. just makes a ticking sound or clicking sound. I need help with this,,,,,,,,,, please help me!

  • Anonymous Jan 13, 2009

    My service 4 WD message just came on I have 135,000 miles on the vehicle and had a new transfer case installed 15,000 mile ago.

  • Anonymous Mar 12, 2014

    my 2005 h2 hummer service 4wd light came on i had it serviced changing all the fluids but light still comes on

  • Richard Sr
    Richard Sr Nov 07, 2014

    Transmission shift selanoid (sp) 1-2 need replaced. 200.00 max


2 Answers

Que valor o precio tiene la camioneta mi correo es soy de venezuela

Posted on Nov 02, 2008

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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


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1 Answer

My 2011 jeep liberty will not lock into 4 wheel drive

so what 4wd system is there, we can guess that.
part time, or AWD full time.
if part time stop doing that on pavement free of ice .
part time is for ice or dirt only
to be real tech savvy , on PT, it means, one tire on ice or dirt.
lost the operators guide, ? in the glove box?
its here.
posted over 300 times.

read page 226 yet.?
4WD Indicator - Vehicles Equipped with
Command-Trac (its part time, 4wd for ice or dirt only)

SERV (Service) 4WD Indicator Light - If Equipped
The "SERV 4WD Indicator Light"

page 230
4WD Indicator - Vehicles Equipped with
Selec-Trac II
read page 322 carefully for this,,,
full time, but not in LOCK.!!!!

why not post a photo of your 4wd controls
and then get real savvy answers.
sorry cant guess, what opted 4wd came with your car.
lacking photos....

Feb 08, 2016 | Jeep Cars & Trucks

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 > 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

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I have no rear drive shaft but it's drive like it's in 4wd. The button is set for awd is there anything that can be done with it until I can find a drive shaft?

Unfortunately No, the System was designed for the Rear Wheels to always work first, When the AWD button is engaged then it actuates the front differential through a Vacuum solenoid, Which Is actuated from an electrical solenoid,If you are referring to the front Drive shaft then you can disable the System by pulling the AWD fuse, But it wil Probable set a service soon liht in all eventuality

Apr 22, 2014 | 2001 Ford Expedition

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2004 Tahoe stuck in auto 4wd and service 4wd light is on

switch on dash can cause this but the transfer case control module is the culprit most times.try disconnecting battery this will should reset the TCM.see what happens.worst case senereo is bad transfer case

Dec 10, 2013 | 2004 Chevrolet Tahoe

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My check engine liht is on with CODE P0445 AND P0422


P0455 is for a evap system large leak detected, and P0422 is main catalyst efficiency below threshold.

Get the cat checked out, this could be the cause of both codes. Failing that a smoke test is your best bet to determine exactly where the evap system is leaking from.

Oct 21, 2013 | Hummer H3 Cars & Trucks

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2008 hummer h3 4wd service after battery change

if the 4wd switch doesn't light up to show what mode it is in the tccm will set a code and the 4wd light will be on the fuse is in the under hood fuse block I forget what it is labeled as

Jul 01, 2013 | Hummer H3 Cars & Trucks

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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 two wheel or four wheel drive, how do you 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

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