Does this fit 2001 Chevy Silverado 1500HD 6.0L. I saw it does not have a plug on the rear like my Delphi does. The Delphi has the clutch plug and additional on the rear of the compressor? Unsure of its use accept that it may be a pressure switch.?
Usually you must add a small amount of oil to the system as the compressor doesn't have enough for the system what is the oil spec and brand that is used in your compressor
