I recently got a non-flashing CEL. I checked the engine bay and could only see that I had to change my air filter because the air filter gauge on the air box was in the red and had to be reset. I did the 3 time on off diagnostic mode to try and pull a code and only got the 10 flashing cel and no code in the odo. But when I hit the odo reset and turned ignition on and off while holding I got a "C CODE" followed by a "67 35" and after changing the air filter I got the "C CODE" and "67 47" anyone got any ideas??? Thanks

 

Hold on while I try to guess your truck year and model.



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C codes are Chassis codes. . .the list I have stops around 1900.

 

Sorry bout the missing info itsa 04.5 qc 4x4 sb 3.73 gr. Finally able to pull a code by the three turn on off method. I guess you have to make the turns within a 5 sec. time period. I got an p0514 and it went away after the truck started a few more times. Thanks again for the replies....