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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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  #1  
Old 02-26-2014, 02:31 AM
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fyr145 fyr145 is offline
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Default Re: Weird prob- video attached

These darn electrical problems ...............

Well lets start with the obvious and work back. Your getting power because the turn signal light comes on and the headlights come on. No fuses blown either......Power ruled out.

Next, the circuit has ground because the turn signal works when you turn the headlights on. No ground ruled out.

Then, the next thing I would check are the relays. They seem to work fine when the headlights are activated, but then the turn signal malfunctions when the lights are turned off. Suspect a faulty relay. Check relay. YouTube has short videos on how to check them. Just because your getting power, does not mean the relay is working properly. Your owners manual should tell you which relay to pull and from which fuse block.

In addition, I would unplug the turn signal relay and then retest the headlights and see if they come on like before.

Good luck
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Old 02-27-2014, 01:41 AM
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Default Re: Weird prob- video attached

Im thinking hazard/flasher module. it plugs into the back of the left ip fuse block. Its black or grey rectangle box. Try tapping on it with a screw driver handle while signal light is on and solid. If it starts to flash then that's the problem, even if it doesn't start to flash its the most likely culprit
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Old 02-27-2014, 02:55 PM
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Default Re: Weird prob- video attached

I agree with Humtech. Thermal flasher relay modules are finicky, if they don't have sufficient load they will not flash. But let's hope that the problem is with the flasher unit itself.
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Old 03-01-2014, 03:45 AM
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Default Re: Weird prob- video attached

Thanks... Local parts store did not have the relay, so I had to order online. Funny thing is that the problem has not come back in 2 days. I did try working the hazard flashers when the problem last appeared. Maybe that causes some freak patch on the relay. I will replace nonetheless and hope for the best.
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