Flashing 4-Hi/4-Lo & Center Differential Light Troubleshoot & Repair (10 Viewers)

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Yo, no kidding I was just about to search for this issue. I bought my '10 with my 4hi and center diff light flashing when I'd try to put it into 4hi, and it wouldn't attempt 4lo. Now that it's nice and warm outside I am going to attempt the repair. Thanks for this! I have replaced plenty of windshield washer hose due to rodent gnawing so I wouldn't be surprised if my breather hose is kaput, or even if the wiring is chewed.
 

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