the low pressure valve is on the passenger side. follow low pressure line and you will see it
Refrigerant is added to a 1997 Pontiac Grand Am by removing the cover on the low pressure coolant line and attaching a can of refrigerant. The valve on the can is then opened and the system will automatically pull the refrigerant in.
134a
r134.
To refill the refrigerant on a Pontiac Aztek, locate the low-pressure service port, which is typically found on the larger diameter aluminum line between the evaporator and the compressor. Remove the cap from the service port and attach the refrigerant recharge hose. Be sure to follow the manufacturer's specifications for the type of refrigerant and the correct pressure levels during the refill process. Always check for leaks after refilling to ensure proper functioning of the air conditioning system.
all newer vehicles take r134a refrigerant.
The low pressure quick connect port is between the radiator and motor down low on a solid line that runs vertical just towards the passenger side of center.
R-134a
under the air filter box
Use R-134
under the car behind the pass. tire
1997 PONTIAC GRAND PRIX 3.8L 6-cyl EngineCAPACITIESEngine, with filter..........4.6 quarts [1]1. After refill check oil level.Do not overfill.1997 PONTIAC GRAND PRIX 3.1L 6-cyl EngineCAPACITIESEngine, without filter..........4.0 quarts [1]1. Add extra oil when replacing filter. refill check oil level.Do not overfill.Hope This Helps.
R134a. R-12 "freon" was discontinued years ago.