Pertinent specs did not change from the axle's inception till now. Here is a list from Yukon Gear & Axle:
Ring Gear Diameter: 9.5
Ring Gear Bolts: 12
Cover Bolts: 14
Carrier Breaks: none
Spline Count: 33
Pinion Support: False
Float: SF
Axle Lugs: 6, 8
GM 9.5" 14bolt Semi-Float Rear, 1979-97
C20 3/4 Ton: 1979 - 1997 (Rear)
Express Van 2500 3/4 Ton: 1996 - 1997 (Rear)
G20 3/4 Ton: 1979 - 1995 (Rear)
G30 1 Ton: 1979 - 1997 (Rear)
K10 1/2 Ton: 1988 - 1997 (Rear)
K20 3/4 Ton: 1979 - 1997 (Rear)
Savana 2500 3/4 Ton: 1996 - 1997 (Rear)
Silverado 1500 1/2 Ton: 1988 - 1997 (Rear)
Silverado 1500 1/2 Ton: 1988 - 1997 (Rear)
Silverado 2500 3/4 Ton: 1988 - 1997 (Rear)
Suburban 2500 3/4 Ton: 1979 - 1997 (Rear)
Yukon 1500 1/2 Ton: 1992 - 1997 (Rear)
Yukon 1500 1/2 Ton: 1992 - 1997 (Rear)
Yukon 2500 3/4 Ton: 1992 - 1997 (Rear)
GM 9.5" 14bolt Semi-Float Rear, 1997 & Up
Avalanche: 2000 - 2011 (Rear)
Avalanche: 2000 - 2011 (Rear)
C10 1/2 Ton: 1988 - 2000 (Rear)
C20 3/4 Ton: 1997 - 2000 (Rear)
C2500: 2000 - 2000 (Rear)
Express Van 2500 3/4 Ton: 1998 - 2010 (Rear)
H2: 2003 - 2009 (Rear)
K10 1/2 Ton: 1998 - 2000 (Rear)
K20 3/4 Ton: 1997 - 2000 (Rear)
K2500: 2000 - 2000 (Rear)
K2500: 2000 - 2000 (Rear)
Savana 2500 3/4 Ton: 1998 - 2011 (Rear)
Sierra 1500 1/2 Ton: 1998 - 2011 (Rear)
Sierra 1500 1/2 Ton: 1998 - 2011 (Rear)
Sierra Denali: 1998 - 2010 (Rear)
Sierra Denali: 1998 - 2010 (Rear)
Silverado 1500 1/2 Ton: 1997 - 2011 (Rear)
Silverado 1500 1/2 Ton: 1997 - 2011 (Rear)
Silverado 2500 3/4 Ton: 1997 - 2011 (Rear)
Silverado HD 1500 1/2 Ton: 2001 - 2011 (Rear)
Suburban 1500 1/2 Ton: 1997 - 2011 (Rear)
Suburban 1500 1/2 Ton: 1997 - 2011 (Rear)
Suburban 2500 3/4 Ton: 1997 - 2011 (Rear)
Tahoe 1500 1/2 Ton: 1997 - 2011 (Rear)
Tahoe 1500 1/2 Ton: 1997 - 2011 (Rear)
Yukon 1500 1/2 Ton: 1997 - 2011 (Rear)
Yukon 1500 1/2 Ton: 1997 - 2011 (Rear)
Yukon 2500 3/4 Ton: 1997 - 2011 (Rear)
Yukon XL 1500 1/2 Ton: 2006 - 2011 (Rear)
Yukon XL 1500 1/2 Ton: 2006 - 2011 (Rear)