Question about 2003 Hummer H2

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Ignition switch I have a new ignition switch in my 03 hummer h2 & the switch turns to the on position but but will not give no extra turn to where the motor will crank just stops at on position so wanna know is it off set or just wrong ignition inside

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I am trying to install an after market tachometer in my 2003 Hummer H2 - the instructions indicate tying one wire into the ignition switch? Thanks, Larry D'Angelo

Any power source that is switched will work, so use a test light to find a fuse that is only powered when the key is turned to run.

Apr 05, 2017 | 2003 Hummer H2

1 Answer

The ignition switch won't turn on my hummer h3

either the key is ruined or you need new ignition , have you a spare key ?

May 17, 2014 | 2007 Hummer H2 SUT

3 Answers

Key is locked in ignition

Make sure the vehical is in park. If it is not, the key will not release. If you did not turn the key down far enough, or turned it too far, the key is in auxillery and needs to be switched to the off position.

Apr 17, 2011 | 2003 Hummer H2

2 Answers

My key In my 03 H2 is stuck it won't turn back all

Go buy some WD40 and spray it inside the ignition and while your doing that try and move the steering wheel side to side and try pulling out the key. You might want a extra person to help you let then turn the wheel while your pulling on the key but first spray WD40 in there it wont hurt it plus it lubricates the key and ignition trust me this works I have done this tons of times.
PS you can buy WD40 at any auto parts store or even at a Wal-Mart.

Dec 18, 2009 | 2003 Hummer H2

1 Answer

Hummer H2 engine won't turn over, key won't

Dead Battery? Bad starter motor?

Try pushing on the brake and making sure its all the way in park.

Turn the steering wheel back an forth a little to remove the key.

None of those work, Call triple A, find a shop.

Jun 07, 2009 | 2007 Hummer H2 SUT

1 Answer

Hummer headlight won't turn off

i know gms have a light sentinal in the dash. when it says it's dark out, it will automaticaly turn your lights on. dose your hummer have one? if so, try cleaning it off.

Feb 06, 2009 | 2005 Hummer H2

1 Answer

Ignition key

call lock smith, the ignition it wear out, I have same problem

Nov 27, 2008 | 2005 Hummer H2

1 Answer


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

2 Answers

H2 Hummer

Today 11-12-08 my 2003 H2 Hummer would not start. Checked battery it ischarged. Cables tight. Tried to start with portable booster pak. No go. Tridto jump start with my wife's Suburban. Still no go.
When I turn the switch I hear a single click and that is it. No engine turning over. While trying to start with key the headlights go out. Out of ideas, Will take to Chevy garage in am. Will post solution.

Aug 23, 2008 | 2003 Hummer H2

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