It uses R134 refrigerant.
R12
134a
The refrigerant is R134a.
R134a
No
R-134a
To charge the AC on a 2006 5.3L express van you locate the AC unit under the hood. The owners manual will have diagrams on the engine parts and the type of coolant needed to recharge the AC. You follow the instructions on the coolant.
YesYes
A 2001uses R134a refrigerant.
form_title=Recharge Your Air Conditioner form_header=Keep your AC running smoothly by regularly replacing the coolant fluid. What type of coolant does the car use?=_ Have you had any problems with the unit?= () Yes () No If so, please describe the issues:=_
No, they have different boiling points and heat transfer capacities.