Questions & Answers for: GMC engine misfire

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Question about 2001 Yukon Denali

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check engine light 2004 GMC Yukon Local garage diagnosis misfiring .Changed all spark plugs and wires , still misfiring.The mechanic suggested a fuel injector cleaner, still nothing.Any suggestions ...

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...misfire. Have had on scanner, misfires Cylinders 1 and 4. Have changed: both spark plugs and wires, coil and coil lead, distributor cap and fuel filter. Engine does not miss or show any signs of any ...

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...engine may only misfire and run rough when cold but then smooth out as it warms up. Or, it may start and idle fine but then misfire or hesitate when it comes under load. Also, it may run fine most of ...

Question about 1989 Sierra

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...an the engine misses YOU HAVE CYLINDER MISFIRE CAUSED BY BAD SPARK PLUGS AND WIRES, CLOGGED FAULTY FUEL INJECTORS WILL CAUSE SEVERE ENGINE MISFIRE WHICH WILL CAUSE CHECK ENGINE LIGHT TO TURN

...engine misfire.  Most likely, the transmission is kicking in and out of overdrive. To verify this is the problem, try driving your truck with the shift lever in the "3" position.  This ...

...engine light is on and the code says i have a misfire. what does this mean? A misfire means the a particular or several cylinders failed to effectively produce work. The engine may feel shaky and ...

...EGR valve and still doesn't want to run? cap ,rotor ,spark plug wire , spark plug could misfire.... the check engine light flash because it's a severe misfire and fuel go to converter

Question about 2003 Envoy

1 Answer

...engine is misfiring according to your codes ...4 codes 4 problems P0300 - Random Cylinder Misfire DetectedP0301 - Cylinder 1 Misfire DetectedP0302 - P0312 Cylinder X Misfire DetectedP0325 - Knock ...

...engine light blink it is only one thing.......misfire you could have P0300,P0301 and so on P0300 is multiple misfire P0301 is cylinder no 1 misfire,the last number tell you the no cylinder hope it ...

engine misfire and transmission sluggish Was told that #1 engine cylinder has over 40000 misfires....transmission feels sluggish when speeds are between 50 and 60 mph... I can shift the transmission ...

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