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Daryl, Shop Owner, Master Mechanic
Category: GM
Satisfied Customers: 12547
Experience:  28 years experience, Master Mechanic
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99 silverado 2500: 6.0l v8 obd II code = p0308- cyl 8 misfire what

Resolved Question:

99 silverado 2500 4x4 6.0l v8

obd II code = p0308- cyl 8 misfire

what would cause this and how do i fix it?
Submitted: 7 years ago.
Category: GM
Expert:  Daryl replied 7 years ago.
I would start by checking and the plug and wire to that cylinder and if they do not help the misfire I would get a professional fuel injection cleaning done.
Customer: replied 7 years ago.
changed the plugs and wires, and replaced the coil for that cyl.
no change

also showing a p0157 code
Expert:  Daryl replied 7 years ago.
Ok then the problem is most likely a fuel injection problem and a cleaning may help.
Customer: replied 7 years ago.
thank you
Expert:  Daryl replied 7 years ago.
Thank you and good luck with the repair
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