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02 Duramax-Battery Light on, 4WD not engaging

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Old December 2nd, 2017, 8:12 PM
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Default 02 Duramax-Battery Light on, 4WD not engaging

Hi there
I've got a problem with my 2002 Duramax LB7. Today I had finished hauling my horse trailer. I was backing it in and flipped it into 4wd. The very instant I pulled the lever, the battery light came on, my PRND went out, and 4WD never engaged. Also looks like my temp guages stopped working. It seemed to me like I blew a fuse as it happened so suddenly but my 4wd fuse and ATC fuses are fine. No idea what happened! Can anyone tell me what's goin on?

I tried disconnecting the batteries for awhile, tested the batteries, they're putting out the proper juice. I just replaced both batteries yesterday, and they're cranking strong.

Thanks for any help!




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