What kind of transmission does a 96 Chevy suburban k1500 4x4 have?

A 1996 Chevy Suburban K1500 4x4 typically had either a 4L60E automatic transmission or, less commonly, a manual transmission (likely a NV4500). To know for sure which one *your* specific Suburban has, you'll need to check the vehicle's documentation or look at the transmission itself.