Hummer H3 transfer case shifting

[Wildturkey1]

Hi, I have a 2010 H3 and am having trouble with what appears to be the transfer case.
Yesterday while driving in normal 4wd, the transfer case shifted into 4 wheel High Lock and the 4 wheel High Lock illuminated on the dash.
I engaged the normal 4wd manually and all was well. This also happened about 3 weeks ago.

Does anyone know what the problem could be? These instances were not accidental.

Thanks.

 

[Kick'n Dust]

Hi, I have a 2010 H3 and am having trouble with what appears to be the transfer case.
Yesterday while driving in normal 4wd, the transfer case shifted into 4 wheel High Lock and the 4 wheel High Lock illuminated on the dash.
I engaged the normal 4wd manually and all was well. This also happened about 3 weeks ago.

Does anyone know what the problem could be? These instances were not accidental.

Thanks.

Make sure your control head buttons are working smoothly. I cleaned my dash once and had a problem similar to yours. Also the encoder motor connectors are known to get corroded. A can of electrical cleaner and dielectric grease goes a long way in correcting this problem. You could also have an encoder motor that is failing. I do not believe a bad shift fork would be your problem but it is possible. It sounds more like an electrical issue.

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