Question about 2008 Hummer H3
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Posted on Jan 02, 2017
if it is the factory alarm you will have to do a relearn. G.M. uses a couple different ways to do the relearn and I would think it would be the same for hummer. turn off all acc and then turn the key to the on position wait 10 minutes you will see the light on the dash flash and go out . asap turn the key to off to on 3 times quickly and the third time leave it on on again do this 3 times for 30 minutes then after the final turning of the key 3 times on the 4th time start the car. so turn off all acc like radio , a/c ect then turn key to on in 10 minutes the light on dash will flash and go out quickly turn key from off to on 3 times and once again leave on on do that 3x for 30 minutes then start the car. that is the gm relearn for security they have one on some models that start after 10 minutes but that is usualy on the cheaper cars so just do the 30 minute.
Posted on Jun 04, 2009
It's unlikely that such a new vehicle would have a starter or solenoid problem. If it cranks over but won't start, try jiggling the shifter while in Park, or put it in Neutral. It could be a defective Starter Safety Switch which prevents the car from being started while in gear. Good luck.
Posted on Oct 07, 2009
Also check to be sure it is in park. It could also be the key switch. Look in the yellow pages under autoelectric and take it to a shop where a specially trained tech with proper diagnostic tools can isolate and repair your problem.
Posted on Oct 15, 2009
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