What transmission is in your 94 suburban 1500 4x4 5.7 motor?
A 1994 Chevrolet Suburban 1500 4x4 with a 5.7L engine would most likely have a 4L60E automatic transmission. However, there's a small chance it could have a different transmission depending on the specific options and build date. To be absolutely certain, you'd need to check the vehicle's identification plate or the owner's manual.