GMC - Sierra:: 2004 - Code P0300 Random Misfire While Under Load Apr 12, 2016 2004 GMC Sierra 2500 HD, 227,000 miles 6.0L V8. While driving up hills or increasing load, the CEL will flash multiple times, I pull over as I know. P0300 is a random misfire code. This means it is seeing a misfire in random cylinders. I would look for a common denominator, such as fuel delivery or intake leak, if the plugs and wires don't help! This means it is seeing a misfire in random cylinders. P0304 GMC Tech Notes The P0304 code means that the cylinder 4 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 4. If the. 2013/06/12 · P0300 code on a 03 GMC Sierra Post by finfan » Sun Jun 09, 2013 9:51 pm I am in need of help. I have had this code for a couple of days now and can not track it down. I have replaced the plugs, plug wires, fuel filter and regulator. Chevy Truck Forum Silverado Sierra GMC Truck Forums Started with p0300 Jul 28 2011, 9:55pm 4.8 vortec p0300 from autozone. All data test done and main diagnosis is 1 and 7 are low compression. 75-100 pds. No head.
I have a Dead Miss in 4 on my 2004 GMC Sierra 1500 5.3 engine. I have watched it misfire a ton on the machine. I have replaced Plug Wires, Plugs, the Coil on 4 and the injector on 4 also did a compression check and it test as. Sometimes the crankshaft position looses it calibration. There is a simple learn procedure with a scan tool that might help. I find the most of the trucks i see with a p0300 it fixes. Now that you have a p0171 and p0174 you may have.
2016/06/26 · So I got the P0300 code. I thought it was just a bad coil so I replaced. Wasn't it. Did a tune up. Never fixed it. So I pulled valve covers found 5 cyl to have a bent push tube. Checked all of the others. Number the only one. 2017/01/14 · 03 GMC sierra pulled code p0300 changed plugs truck has no pick up - My truck was running fine got home turned it off came out now I have no pick up.
hey all, i have a 2003 4.3L in a 1500 4wd. it throws a p0300 and stumbles pretty good, continuously, yet it does run. engine light will blink at times while driving, but not as often as not. it smells like fuel pretty good around the truck. 2002 GMC Sierra 1500 / I have a p0300 code for a. I have a P0300 code for a random misfire. 2002 GMC Sierra 1500 I did a tune up and all was well. Shortly after I developed a random misfire. New plugs wires, fuel filter. It is a. The truck has 88kmi.At 60-70 mph I get a p0300 code.The misfires are listed as cyl 1 and cyl 6.Here is a list of things I have tried with little or no change:new plugs/new wires/8 new injectors/new fuel rails with new pressure regulator/8. 2004 gmc yukon p0300 p0174 p0171 - 2004 GMC Yukon Posted by Anonymous on Apr 26, 2012 Want Answer 0 Clicking this will make more experts see the question and we will remind you when it gets answered. Comment Flag.
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