Jump to content

  • 0
2005bandit

2003 Silverado 2500 6.0 Check engine light flashing

Question

 I have a 2003 Silverado 2500, 6.0 and The check engine light comes on and starts flashing right after I start it. I have replaced the plugs and wires and it did not change anything.

If I drive down the road and keep the throttle steady with no load on it the light goes off. If I accelerate it comes back on. I get the P0300 code on my code reader. I can tell that it runs rough when the light is on.

It seems that if I keep it below 2000 RPM,s going down the road it stays off. Any help is appreciated.

Share this post


Link to post
Share on other sites

3 answers to this question

Recommended Posts

  • 0

Could be a possible lean condition due to either a plugged fuel filter, or failing fuel pump or controls or wiring to it. Sometimes that failure won't throw o2 or lean codes. 

 

Need more info though. Live scan data, or freeze frame data would be extremely helpful.

 

 

Share this post


Link to post
Share on other sites
  • 0

Check for intake leaks also

Share this post


Link to post
Share on other sites
  • 0

I’m going to say low compression on a cylinder somewhere


Sent from my iPhone using Tapatalk

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Popular Now

×

Important Information

By using this site, you agree to our Terms of Use.