H2 2003 Starting Problems

[Samco Fab]

I have heard that the ignition switch (where you turn the key) can go bad on H2's fairly commonly. I have never replaced one, but sometimes an intermitent problem with the ignition switch can show a bunch of weird trouble codes such as transmission shifting problems and engine shutting off or not starting. You might ask your dealership about the steering column key ignition switch as one option.

I am not an electrical guy, so this is just a guess.

[ttkresurfacing]

Guaranteed that it is your ignition switch. Dealer charges $200 for it and can be done in an hour or two. I know becuase I have a 2003 and I am now on my fifth switch. Just had to call Hummer corporate to see they were gonna make me pay again or not. Good luck.

Tim

[scaleste]

There is a theory that as one gets older, brain cells drift down to the butt. Proof to this theory is to consider how many times have you be bewildered about something, lost the keys, or some other puzzle and after you sit long enough to think about it, you think of the solution. The brain cells get pushed back up.

I recalled one other thing I did while under the dash. There is a very large plug that is so large, there is a leaver to release it and pull it out. Push the leaver forward and it locks the plug fully engaged. I found that leaver not fully pushed in place. Without really thinking about it, it was loose and it simply pushed it in place. The plug then properly locked in position.

After I sat back having concluded that the next day would be a call to the dealer, those feeble brain cells began to engage and I remembered the plug. I went back out and loosened the leaver and all is back in order; door open chime went off, seat moved radio turned on and the blessed instrument panel worked. The hummer started with a bare turn of the key.

I?m not happy with the solution though. Not comfortable going deep desert camping with an iffy plug that works in the wrong position. Like plugging xmass tree lights in an old extension chord and wiggling the connection to get the lights to come on. Not a safe maneuver.

By-the-way, food for thought ? It came to mind that this may also be an interesting feature. I am always concerned parking at the airport for long term thinking I may find an empty parking place when I return. Simple additional theft deterrent.

[scaleste]

PS - I really appreciate the replies. You guys kept the though process going and I really appreciate it.
Thanks,

[mikejr]

you are welcome and thats the beauty of a forum like this. More eyes on a problem is always a good thing.