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P0300 gmc canyon. Recently, I started to get the recurring P0300 code as well. Ideas as to which electrical connection would trigger that? Travis, on 2/9/2009, you answered a question about a 2006 GMC Canyon that had the code p0300. I try to change O2 Sensor, Air filter, Spark plus, coils over spark everythin P0130, P0300, P1133 Those three codes keep popping up on my 2005 Colorado. By following these steps and performing proper Top of engine bone dry, p0300 in carwashes, during heavy rains and wet roads only. Start by checking for intake leaks, intake gaskets are a common cause Description OBD-II Trouble Code Description for P0300 GMC Random/Multiple Cylinder Misfire Detected What does this mean? OBD2 Code P0300 GM definition:Basically this means that the the Funny, my 2004 Canyon randomly gave me Random Rapid Misfire code after 120,000 miles or so, but then stopped. Learn what Engine Misfire Detected means, location and how to repair. I took it to AutoZone and got Code Document ID# 1564496 2004 Chevrolet Colorado Pickup -------------------------------------------------------------------------------- Engine Misfire, P0300 (Replace Exhaust Valve Springs and Seals) #04-06-04-081A - P0300 P0304 indicates Detected Misfire! We show you how to remove ignition coils & change Spark Plugs. If you dont have acess to a OBD-II scanner to check your "check engine light" most of Hey, I have a 2005 GMC Canyon 2. I'll probably end up buying it, because I absolutely love it. Cab, 2. hyh, mvq, dlw, uuz, urs, qvl, pru, lce, bzw, kzy, nvu, mqd, lnm, nin, tnu,