Open the hood and look to your left and right below the coolant reserve tank you should see a silver steel line going across the engine at the very front of the hood right by the hood latch and you will see on the left side right on this line a black cap and that is your "recharge port" for the R134A AC. hope this helps! I got a 2001 SE and that is where mine is.... :-)
on the passenger side next to firewal
How much refrigerant is needed recharge ac on a 2001 Pontiac montana
Black capped port on the front left (as you face the car with the hood up) of the engine compartment. It's right by the radiator in my 3.4L SE1.
You can go to WAL-MART and buy the recharge kit for the ac. It's very simple to do ,all the instructions are there.
Connect the Freon recharge hoses to the ports on the air conditioner compressor. With the hoses connected release the Freon into the compressor.
Look under car...look for blue c as p near compressor...
buy the book on your car car.
You want to charge the system on the low side fitting which is blue. Red is the high side.
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Total recharge is 1.68 Lbs
The AC recharge port on a 2004 GMC envoy is on the low pressure connection. It is the larger of two hoses near the firewall.
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