Question about 2005 GMC Canyon

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We have a 2005 GMC Canyon. The check engine light has been on so we had it checked and cylinder 2 was misfiring. It was suggested that we change the spark plug for that cylinder. We ended up changing all 5 spark plugs, but the problem is that the truck in now running worse. The check engine light is now flashing. What do we do?

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It sounds like it could be a coil pack or ignition problem. Can you tell me what the check engine light is reading/codes?

Posted on Jan 02, 2011

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Nov 28, 2015 | Cars & Trucks

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How to remove the front rotor 2004 canyon


Park the Canyon on a flat stretch of road or driveway and open the hood.

  • 2 Remove the master cylinder cap located near the firewall on the right side of the GMC's engine. Remove half of the brake fluid in the reservoir with a turkey baster. Lay the cap over the container.

  • Read more: How to Change Rotors on a 2005 GMC Canyon ' eHow.com http://www.ehow.com/how_6717490_change-rotors-gmc-canyan.html#ixzz29JfCwiDq

    Oct 12, 2012 | 2004 GMC Canyon

    1 Answer

    Gmc canyon trouble code p0300


    Hi there:

    Basically this means that the the car's computer has detected that not all of the engine's cylinders are firing properly.


    A P0300 diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 code, for example, would tell you cylinder number two is misfiring. Unfortunately, a P0300 doesn't tell you specifically which cylinder(s) is/are mis-firing, nor why.

    Symptoms may include:
    the engine may be harder to start
    the engine may stumble / stumble, and/or hesitate
    other symptoms may also be present

    A code P0300 may mean that one or more of the following has happened:
    Faulty spark plugs or wires
    Faulty coil (pack)
    Faulty oxygen sensor(s)
    Faulty fuel injector(s)
    Burned exhaust valve
    Faulty catalytic converter(s)
    Stuck/blocked EGR valve / passages
    Faulty camshaft position sensor
    Defective computer


    Possible Solutions: If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.


    If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.


    Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open.


    Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

    Thank you for using FixYa, have a nice day.

    Jul 16, 2012 | 2005 GMC Canyon

    1 Answer

    My check 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 sluggish. Ultimately this could cause further damage such as catalytic converter.

    Jun 06, 2012 | 2006 GMC Canyon

    1 Answer

    2005 canyon GMC, 5 cylinder. Ignition switch times out on security code that leaves me sitting for about 10 minutes before re-trying to start. Starter engages, but fuel is shut off.Local Chevy dealer is...


    Sorry to say that vehicle has had electrical issues
    over the years & I would like to get one, before they start
    coming from Brazil next year ,with no frame under them,
    starting in 2013 possibly. I'm not going any where near that
    5 cylinder engine. It is a V8 etc or I'm out

    The dealer is your only hope there.

    Forget me & the other guy

    The dealer has all the resources & factory field
    support to resolve the problem


    Sep 23, 2011 | 2005 GMC Canyon

    1 Answer

    My 2005 gmc canyon has an eratic idle problem and obdII scanner came up with these codes and i dont have the code manual anymore 300,506,8207,6505,9300


    P0300 random misfire, P0506 Idle control lower than expected, 8207,6505,9300 these are GM codes will the use P0300 and P0506. Here is the solution GM canyon and colorado are plaque with camshaft solenoid plugging up,weather you maintance the vehicle like a religion or you dont the camshaft postion solenoid gets plug and causes rough idle every where. Here is your fix there are time I have succesfully cleaned the out with a carburator cleaner or engine cleaner and reenstalled and it worked, there are time I ran I with a engine oil flush and It worked, you gor 2 options take it out and clean it out,and put it back in(clean the oil ports of the solenoid).or run a engine oil flush with a oil change. Now why did this happen and what are the camshaft postion for.It for emmission it took place of the EGR has nothing to do with performance just emmission and headaches

    Apr 23, 2011 | 2005 GMC Canyon

    1 Answer

    My check engine light came on so I had autozone check the codes and they came up with the IAC valve having problems, i checked the manual and it doesn't appear to have one. its a 2005 gmc canyon, 5 cyl,...


    Try to clean the throttle body out. Its not getting enough air going through. The five cylinders create a lot of carbon build up. Is your check engine light on?

    Dec 09, 2010 | 2005 GMC Canyon

    1 Answer

    I have po300 and po506 on my canyon code cleared and resets after a while


    From http://www.obd-codes.com/trouble_codes/
    The P0300 is a misfire and P0506 indicates low RPM at idle.

    A misfire can be caused by poor ignition (spark plug, plug wire, coil, ignition module/engine control module).
    OR
    Poor air/fuel (air filter, fuel injector, fuel pressure, fuel filter, fuel pump, bad gas, or engine control module).

    Check your maintenance requirements and see if any of these items are due for replacement first.

    Jan 06, 2010 | 2005 GMC Canyon

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