The service engine soon light flashes when the computer senses a fault and sets a diagnostic code. Most auto parts stores will read this code for free and tell you what may be causing the problem.
That requires an OBDII engine scanner.
The 2011 Chevrolet Silverado-1500 has a V6 engine.
The 2008 Chevrolet Silverado-1500 has a V6 engine.
The 2007 Chevrolet Silverado-1500 has a V8 engine.
The 2013 Chevrolet Silverado-1500 has a V6 engine.
The 2014 Chevrolet Silverado-1500 has a V6 engine.
The 2003 Chevrolet Silverado-1500 has a V6 engine.
The 2014 Chevrolet Silverado-3500HD has a V8 engine.
The 2013 Chevrolet Silverado-2500HD has a V8 engine.
The 2002 Chevrolet Silverado-2500HD has a V8 engine.
The 2012 Chevrolet Silverado-2500HD has a V8 engine.
The 2007 Chevrolet Silverado-3500HD has a V8 engine.