AC SOS

[DVT873]

The compressor clutch is fed directly from the body computer. No relays or external fuses. Body computer monitors amperage going to the clutch. It will shut the compressor off if that amperage goes above or below the parameter. When it does this it does not leave much of a code. IF you have the body computer diagnostic program connected you will see a high side pressure of 6525.3 psi. Some info here.

https://rawze.com/forums/showthread.php?tid=8938&page=2

I do understand that your problem is the clutch doesn't shut off. Is that just in the bay or when you're going down the road? High humidity and ambient temps above 90 can make it tough to diagnose in the bay. Most manuals call for using high volume fans in front of the truck with the hood closed which adds to the fun.

If you haven't replaced the belt AND tensioner do that before going deeper into this. I don't see where you have. It's late and I'm whipped but the short story is belt slippage on the clutch usually doesn't make noise on serpintines. The slippage creates heat on the clutch coil, reduces compressor efficiency and will cause problems.

Post your your VIN and I can probably get you a factory AC manual and chassis wiring diagram. The wiring you can find on the body builder site but not the AC manual AFIK.

Again, change the belt and tensioner.