Ok, I know that about a million guys here have asked about codes and I did try and type in "codes" in the search here but nothing really what I need. My check light came on my 04 coupe and I went through the codes and came up with two. They are in the 10 PCM catagory and are PO 0481 H C and PO 0455 H C. I'd like to find out what these represent...is there a chart on here that I can refer to or can anyone tell me what these are? Any help is appreciated..Thanks!:thumbsup3:

P0481 Cooling Fan 2 Ctrl Circ Error
P0455 Evap Emission Ctrl Sys Gross Leak Detected

GM Code Listing:

http://diablosport.com/index.php?name=PNphpBB2&file=viewtopic&t=9935

Downloadable PDF version: http://diablosport.com/beta/forumfiles/gm_diagnostic_trouble_codes_170.pdf


P0481 detailed info:
http://gearchatter.com/viewtopic9496.php

P0455 detailed info:
http://www.gearchatter.com/viewtopic11721.php


And, last but not least - you can always go here, type in your trouble code and click the button, and it will tell you what the code is for: http://www.aboutautomobile.com/DTC


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Thanks for the info!! My friend has a 04 Silverado and he had a check engine light and took it to the dealer and they coded it and it was a evap code also. His just turned out to need a new gas cap. I will look over the emissions on the car but some of this stuff seemd pretty tech for me. Hope maybe I can find something out myself as Im not working right now and funds are kinda low to take it to the dealer now.