The newer differentials take a synthetic oil but I do not know which type
The rear track of the 2002 GMC Sierra-1500 is 5 ft. 6 in. (66 in.).
The 2002 GMC Sierra-1500 has rear wheel drive.
It is in the center of the differential cover.
a 1983 1500 sierra classic rear end!!!
You will have to remove the rear end plate. NEUTZ
The rear track of the 2005 GMC Sierra-1500 is 5 ft. 6 in. (66 in.).
The rear track of the 2006 GMC Sierra-1500 is 5 ft. 6 in. (66 in.).
The rear track of the 2012 GMC Sierra-1500 is 5 ft. 7 in. (67 in.).
The rear track of the 2001 GMC Sierra-1500 is 5 ft. 6 in. (66 in.).
The rear track of the 2011 GMC Sierra-1500 is 5 ft. 7 in. (67 in.).
The rear track of the 2008 GMC Sierra-1500 is 5 ft. 7 in. (67 in.).
The rear track of the 2014 GMC Sierra-1500 is 5 ft. 7.6 in. (67.6 in.).