First off unplug the electrical connection to the compressor. Run your truck to see if the problem goes away or not. If it goes away, your issue is with the internal wiring of the compressor itself.
Good luck, please post a reply if you get things worked out.

Answered by kenvcr
2 questions asked

I did what you suggested today, and unplugged the compressor. The problem went away, because the compressor wasn't active. The problem only arises when the clutch on the pulley of the compressor is engaged, or supposed to be engaged. When turning on the a/c, the clutch engages fine, but pops out after a short time. It will re-engage, but very soon after the clutch seems to pop out, sputter, and lock up. Are there any sensors or wires which could be confusing the compressor? If not, what would my problem be?

Response from NCTarheelfan220
3 questions asked

sorry for the late reply, went to reno on long weekend.
OK The clutch portion on the compressor works like your cooling clutch fan. They do wear out/foul up.
Unfortunately it sounds like you need to rebuild or replace the compressor.
You can leave it unpulgged without any consequences to the engine performance.
Kenvcr

Answered by kenvcr
2 questions asked