V6 engines, Key on engine off is---60 to 66 PSI.
V8 engines,.............................is----48 to 54 PSI if eighth diget is Z in VIN#
All others are 55 to 62 LBS. of preassure.
were is pressure regulatore on Chevrolet silverado 1500 5.7
The 2011 Chevrolet Silverado-1500 has 12 valves.
The 2009 Chevrolet Silverado-1500 has 12 valves.
The 2003 Chevrolet Silverado-1500 has 12 valves.
The 2012 Chevrolet Silverado-1500 has 12 valves.
The 2006 Chevrolet Silverado-1500 has 12 valves.
The 2004 Chevrolet Silverado-1500 has 12 valves.
The 2003 Chevrolet Silverado-1500 has a V6 engine.
The 2001 Chevrolet Silverado-1500 has 12 valves.
The 2014 Chevrolet Silverado-1500 has a V6 engine.
The 2013 Chevrolet Silverado-1500 has a V6 engine.
The 2008 Chevrolet Silverado-1500 has 12 valves.