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Sevice 4x4 hard shifting dead guages

Remifoxworth

New Member
Joined
Apr 21, 2018
Messages
2
Hey guys i have a 08 avalanche z71 with a 6 inch fabtech lift, with the 5.3 l and around 145,000 miles. Sometimes while driving the service 4x4 light will come on and all my gauges will go dead, and it will start late shifting and shifting hard. When this happens i can go switch the relay for the power train and the one next to it and it will go away but it will shift hard for like a day or two even after it goes away. Have any of yall experienced this and possibly know whats wrong and how to fix it?
 
Can you scan it to see if there are any pending or history codes?
 
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