Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN









06 gmc check engine light on


Search for (search options)
 



gfay
Novice

Jun 21, 2011, 2:22 PM

Post #1 of 4 (3169 views)
06 gmc check engine light on Sign In

I have a 2006 GMC 2500HD 6.0 engine. I am getting a 300 code, I know it is a multiple misfire and i get a 455 code emission leak.I have replaced the plugs and wires so far. I erase the code but within 3 miles the light comes on and at 50 mph will start blinking, when I slow down the light will just stay on. I have done nothing about the 455 code I am not sure what to do.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 21, 2011, 2:52 PM

Post #2 of 4 (3164 views)
Re: 06 gmc check engine light on Sign In

What led up to this PO300 code? Was something repaired recently in the engine?



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



gfay
Novice

Jun 22, 2011, 8:22 AM

Post #3 of 4 (3146 views)
Re: 06 gmc check engine light on Sign In

I bought the truck with 226000 miles. It wasn't long after the light came on. I erase the code and approx. 4 miles it takes to come back on.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jun 22, 2011, 9:20 AM

Post #4 of 4 (3143 views)
Re: 06 gmc check engine light on Sign In

With that many miles, anything is possible. Start out with a complete compression test so you don't throw good money after bad.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







 
 
 






Search for (options) Privacy Sitemap