Help Me Decipher This Vin Please

[tomseeley]

I used to be able to decipher VINs but that was several years ago. I'm shopping online and I found one ad today that piques my interest, a bit, and I'd like to ask, please, if someone could give me the lowdown on this truck:

 

1GCHK49699E144593.

 

Thanks.

[mtm700]

Its an '09 4x4 HD Ext. Cab work truck with a Duramax and 3.73 gears. Thats all the info I can give.

[tomseeley]

Its an '09 4x4 HD Ext. Cab work truck with a Duramax and 3.73 gears. Thats all the info I can give.

 

Thanx, man. I appreciate the help.

 

In fact, I just found GM's official "rosetta stone" so I'm good to go.

[trx680]

Its an '09 4x4 HD Ext. Cab work truck with a Duramax and 3.73 gears. Thats all the info I can give.

 

 

how do you know this?