Silverado 2004 began with the problem of emissions from cruelty. Confused?
I have a Silverado 2004 59.000 K, the engine light illuminated, codes, the maximum air flow, the three failures, [motor was good]. Over the next two months, Chevrolet, found so badly connected catalysts necessary to replace fuel injectors on the outside. GM has been good all repairs two days later the engine light on, replaced 02 sensors, but Oil pressure is exactly1 / 2 of what has been since I bought it new. The truck at the dealership now has no idea what is wrong. It always works well, except for oil drops in vacuum pressure sufficient to activate alarms, dealer said not a problem in the specifications. 6 to 25psi still 25/50. Last fuel engine light with a low rate. He says he has no idea what bad as they're concerned they do not have any idea why this happened, and nothing is bad in a truck? Any thoughts would appreciate any help!
Oil exhaust camshaft internal area as possible. It is also possible broken spring pressure regulator oil, the home of the oil pump. It could be a motherboard brand of pump. Never heard screaming oil pump? I. Better get a factory representative to work with a certified mechanic. If you can not be repaired, the demand for a new engine.
My 2009 chevy silverado conversion