false oil pressure signals
#1
false oil pressure signals
My 2003 chevy Silverado k2500 (6.6L) will not pull my travel trailer. It works ok until the trailer is attached. After 30 minutes or so of pulling, the oil pressure gauge drops to zero and the computers kick into reduced power mode. I had it checked by three diesel shops who indicate there is no actual reduction in oil pressure. The codes that are stored are PO522, PO641, and P112. The oil sending unit has been replaced, the fuel filter changed, and the injectors serviced. Any idea of where to look for repair?
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