Possible malfunctioning odometer? 07 Silverado

[71LowBow]

Hey,

My parents leased my brother an 07 Silverado. Needless to say, he doesnt take care of his vehicles. The tranny went out of it yesterday, although I do not know the exact cause.

Now that his truck in in the shop, it apprears that he has put 61,000 kms on it since getting it last year. The lease has a 60,000 km maximum, and there are 2 years remaining.

When my brother was called on this, he said that when the tranny went, his odometer went crazy and put on all the extra kms.

I call bs - but has anyone ever heard of this happening? Is it even possible?

I don't want to see my parents getting taken advantage of any more, but they seem to be believing this story. Thanks for ANY help on this matter.

Kristal