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Roy, import/domestic specialest
Category: Chevy
Satisfied Customers: 6190
Experience:  ASE master tech for 40 years
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Chevrolet Silverado 1500 Classic LT: My engine light came on

Customer Question

My engine light came on so I had onstar check the engine issue and they said it is a engine miss fire. I have a 2008 chev Silverado 5.3L Vortex engine. It has 135k miles. Last year I chanege the spark plugs and wires. Any suggestions
Submitted: 2 years ago.
Category: Chevy
Expert:  Roy replied 2 years ago.
good morning my name is ***** ***** I will assist
missfires can be caused by many things. bad spark plug, wire, coil failure, vacuum leak, injector failure, electrical issue, low or no compression and lastly valve train failure.
the first thing to do is to check compression in the effected cylinder.
Expert:  Roy replied 2 years ago.
how are you making out??