It is located on the accumulator assembly. I hope you are not wanting to add refrigerant to it especially if it has stop leak in it. The stop leak will ruin a shops recycling equipment as well as possibly do harm to your air conditioning. The refrigerant amount is located on a decal under the hood. The amount is EXACT and not guess work.
Its in the drivers side valve cover in back near the firewall
The 2003 Chevrolet Malibu PCM valve can be found on the firewall in the engine compartment. The PCM valve will be on the passenger side of the firewall.
The PCV valve is stuck in the valve cover on the passenger-side of the car. It just pulls up and out to change it.
the valve on intake port side and exhause valve on exhaust manifold side.
The egr valve is on the front of the engine near the head. On a 6 cylinder it is on the passenger side, while the 4 cylinder is on the drivers side.
The PCV valve is found in the valve cover on the passenger side.
on the driver's side valve in the rear near the firewall - attached to a 1/2" hose coming from the top of the motor on the driver's side valve cover in the rear near the firewall - attached to a 1/2" hose coming from the top of the motor
Passenger side valve cover
The 2003 Pontiac Montana EGR valve is located on the firewall. The valve will be on the driver side of the firewall.
The Front-Passenger-Side Cylinder
If the engine in question is the 4.3l Vortec motor, the pcv valve is located on the driver's side valve cover, near the center. If it is the 2.2l motor, it is also located on the main valve cover, near the front of the cylinder head.
on the side of the transmission