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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I am having a misfire on cylinder #4 I changed the coil pack

Customer Question

I am having a misfire on cylinder #4 I changed the coil pack and the plug and wire and it didn't fix it
JA: How many miles are on the car? Is it a steady misfire? Or random?
Customer: 117,000 and it is steady
JA: What is the model/year of your Chevy?
Customer: 2009 Silverado 5.3 flex fuel
JA: Are you fixing your Silverado yourself? What have you tried so far?
Customer: coil, plug and wire
JA: Anything else you want the mechanic to know before I connect you?
Customer: It is causing the traction control and lights to come on and running really rough
Submitted: 8 months ago.
Category: Chevy
Expert:  david craig replied 8 months ago.

Hi Im David, thanks for visiting the site, the abs and trac light will come on when the check engine light comes on because the computer disable those systems automatically, when theres an engine problem, so dont be worried about that. if youve changer the the coil wire and plug, thee only thing left is the #4 fuel injector.

Customer: replied 8 months ago.
It is getting fuel. The plug was fouled and soaked in gas
Expert:  david craig replied 8 months ago.

ok, so can you check to make sure the injector isn t leaking....

Expert:  david craig replied 8 months ago.

checking in to see how its going

Expert:  AMEDEE replied 8 months ago.

Hello and welcome!

Different expert here.

Did you still need help?

If so, please let me know and I will be happy to help.