* R134a refrigerant
* A/C manifold gauge set
* A vacuum pump
* Safety glasses
* Gloves
*Here are the steps on how to charge your Cadillac AC with R134a:*
1. Connect the manifold gauge set to the Cadillac's A/C system.
2. Start the vehicle's engine and turn on the A/C.
3. Open the low-pressure valve on the manifold gauge set.
4. Watch the pressure gauge on the manifold gauge set. The pressure should begin to rise.
5. Once the pressure reaches the recommended level, close the low-pressure valve.
5. Start the Cadillac and turn on the air conditioning.
6. Open the low-pressure valve on the manifold gauge set and let the refrigerant flow into the system.
7. Watch the pressure gauge on the manifold gauge set. The pressure should rise to between 25 and 45 psi.
8. Once the pressure reaches the desired level, close the low-pressure valve and turn off the engine.
9. Disconnect the manifold gauge set from the Cadillac's A/C system.
Please note that this procedure is only a general guide. The exact steps may vary for different Cadillac models. If you are not comfortable working with automotive AC systems, you should take your Cadillac to a qualified mechanic for AC service.
