How do you change radiator on a 2002 envoy?

The best way that I have found is to take off the hoses, loosen the oil pipes at the bottom and take off the fan and shroud by removing the bolts holding it in place. You need to take off the fan which requires a special tool to loosen it from the water pump.

After that, the process should be simple enough. There are two plastic hooks on both sides of the radiator. You can loosen the hold of these hooks by wedging a regular screwdriver between the rubber flap that holds it in place.

The condenser and radiator should be loose enough to unscrew the bolts connecting the radiator and condenser together. Lift up on the radiator and you replace in reverse.