GMC rear diff swap

[sierra1]

Hi everyone, I have a question for you, I have a 2000 gmc sierra 4X4 ext cab in need of a rear differential, (gear ratios match) does anyone know if the rear differential from a 2009 sierra will fit my truck? I am asking this because im looking at buying one with low mileage. Thanks in advance.

 

[cntinuum]

Do some reading, I think there was a change to metric on the wheel studs somewhere along the line. I like to use http://www.car-part.com/ to search for parts compatibility. Then you see the list of years that parts will interchange.