2000 chevy truck 5.3 liter. air conditioner works 10-15 min then stops. clutch and clutch pressure switch good, freon level good, batt and alternator good??

Probably low freon pressure. There is a pressure switch that does not allow the clutch to engage if the pressure is too low. This prevents damage to the compressor. Check freon level.

A mechanic would check the freon level, then for power at the relay, the low pressure switch, and the compressor clutch.

The pressure switch is right next to the battery negative terminal. To bypass the switch, remove the connector and use a paperclip to jump the terminals inside the connector. By the way, you need to put oil in the system, or the seals will quickly dry out.

Hello, This sounds like you have several problems which are minor, but one problem reveals another. The Serpetine belt and the Tensioner are likely bad. You are getting a slipping belt from the A/C clutch cutting on and off.

You need to check the Freon level in your A/C so that the compressor clutch stays on longer. There is also a low-pressure switch on the A/C line close to the black oblong tank. The switch protects the compressor from burning out due to low pressure. If the low pressure switch gets weak, it will cut off the A/C clutch too early and frequently. This switch is easy to replace.

Once you check the Freon level, you may need to add Freon. There are cans of Freon which come with gauges and chemicals to help patch small leaks, or you can take it somewhere for service.

The Charging system warning can just be due to the Serpetine belt slipping.. If you go to Autozone, Oreilys, or Advance autoparts, they will check your car for FREE. It is possible the internal Voltage Regulator is cutting out inside the Alternator, but with the A/C problem, more likely the Alternator is okay. The testing will indicate what is needed.

I hope my solution is very helpful.

FIRST I CHECK ALL FUSES AND RELAY.TO BLOWER MOTOR IF IT STOP BLOWING.AND CHECK FUSE TO HVAC SWITCH CONTROL.AND CHECK FUSE / RELAY TO AC COMPRESSOR.IF FUSE / RELAY GOOD POWER GETTING TO AC COMPRESOR CLUTCH COIL AND LOW PRESSURE SIDE 28 PSI AND HIGH SIDE 200 PSI. CLUTCH COIL IS OPEN.IF REFRIGERANT LEVEL LOW YOU MAY NEED MORE REFRIGERANT.YOU NEED AT LEAST 28 PSI ON LOW SIDE AND 200 - 220 PSI ON HIGH SIDE.IF ALL IS GOOD STILL NO AC PROBLEM COULD BE A FAULTY AC CLUTCH CYCLING PRESSURE SWITCH.

check the freon level. could be the pressure switch also or even a blown fuse

Before you go looking for a electrical problem, Have you checked the freon level? If it is low, the low pressure switch will shut down the clutch.

If there is no r-12 or freon in the system it wont come on. Try jumping the pressure switch. It's a 2 wire plug somewhere one the AC lines. Just pull it off and jump the wire end with another wire.If the clutch engages you need freon or R-12.

there is a power distribution box under the hood which under the lid of this box it will tell you which relay is for what .. Also your air conditioner wont come on if its low on freon.. even a little low it has a pressure switch which keeps the clutch from working to protect your system when low on freon.. holler if you need more .. Jerry

Check your freon level the pressure switch will not allow the compressor clutch to engage if the freon level is low.