How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Daryl Your Own Question
Daryl, Shop Owner, Master Mechanic
Category: GM
Satisfied Customers: 12547
Experience:  28 years experience, Master Mechanic
Type Your GM Question Here...
Daryl is online now
A new question is answered every 9 seconds

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
Daryl and other GM Specialists are ready to help you

Related GM Questions