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No Gear Light, No Start

govener71

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govener71 Enthusiast

govener71

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06 Silverado 5.3 VIN Z 197,000miles
 

I went to use my Superchips programmer today and it began the process and said there was a communication error, reset and then said the vehicle was not responding. I called Superchips and they were helpful in getting me to remove fuses and such but no luck. They believe there is a problem with my ECM now so I have it out and sent in to return to stock, along with my programmer. 
 

My question is, why even when the ECM was in, would my gear selector light not come on? It is usually a good indicator that the truck will jot turn over. I have had that a couple times now where if that light was not on I would disconnect the battery, hook it back up, and then it would turn over and fire up. But, if the light is not on it won’t turn over  or even try. 
 

Why does this happen and when I get my ECM back should that take care of the issue too?

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