Question about 2006 Hummer H3

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Just got an 06 h3 took it to the car wash and the service 4w drive light came on. could some wires have gotten wet? what could be wrong with it

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Did you do an under-hood wash?
There are a lot of connectors under the hood that are meant to be splash proof but water under pressure can penetrate the connections.

Some automatic car washes spray the underside of the vehicle as it passes through, this should have little effect on a truck like a hummer, but you may have a loose connection that has allowed water into it. Check wire connections at the wheels, transmission, differentials and transfer case. if any seem loose check them for water, if you find water in the connection, blow the connector out and reinstall. There are products available to apply to these connectors to keep water out.

Posted on Apr 13, 2009

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  • Hummer Master
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Sound like you got water in your electrical wiring going to the transfer case.where your electric motors is.they control your 4WD SYSTEM.

Posted on Apr 13, 2009

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Posted on Jan 02, 2017

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