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P0300 chevrolet silverado 2007 - Silverado Chevrolet Cars & Trucks

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Check for vacuum leaks first. After that it is time for a tune up.

Posted on Mar 28, 2015

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Random plug misfire

Posted on Mar 28, 2015

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ammore2
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SOURCE: P0300 Code 99 Chevrolet silverado 1500 5.3L

I had the same problem on a 1997 cadillac, replace coils, plugs and plugs wires,an all the injection did not solve the problem, , i when to parts store an brought some blue devil head gasket repair, problem fix, car run like a new one. it cost $68.oo at advance auto but it work, water is leaking in cylinder causing random misfire.

Posted on Dec 24, 2013

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1 Answer

Lacetti p0300


4 things typically cause a misfire compression gas air or spark try a good tune up and check compression

Apr 02, 2014 | 2007 Chevrolet Lacetti 1.4

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P0300 Code 99 Chevrolet silverado 1500 5.3L


Random misfire. Computer cannot figure out which cylinder is misfiring or it occurs randomly on all 8 cylinders. A friend of mine found his ABS system was kicking in while driving down the road, feeling like the engine was missing. Computer detected it as a P0300 random misfire. He removed ABS fuse and eliminated the problem.

Mar 01, 2013 | 1999 Chevrolet Silverado 1500

1 Answer

Have code p0300 active just replaced fuel pump, all spark plugs, wires, cap, and rotor, engine back fires, and has explosion in the air filter area


Code p0300 is multi- misfires [ any number of the cyinders ]. Sometimes when a fuel pump is replaced, the system will have air inside and will mis & backfire untill the air is cleared back thru the return line, or blead out the test port. This will set the p0300 code. It's rare to have a backfire bad enough to have an explosion, bleed the lines thru the test port untill you see no more bubbles comming out.

Jun 28, 2011 | 2003 Chevrolet Silverado 1500

1 Answer

Code o300 checked about everything you can possiblly do and lite still comes on, any idea's 1999 chevy silverado four wheel drive, 5.3 motor auto trans.


Code p0300 is for mutiple missfires. Have you checked fuel pressure, fuel pressure regulator, plugs, wires, fuel filter... Those would be the main cause of Mutiple missfires.

Jun 06, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

2003 1500hd chevy silverado 6.0 liter. I had a



DTC Number
P0160 DTC Name O2 Sensor Circuit No Activity Detected Bank 2 Sensor DTC Number P0300 DTC Name Random/Multiple Cylinder Misfire Detected

Feb 17, 2010 | 2003 Chevrolet Silverado 1500

1 Answer

99 Silverado code PO 300 what causes it? What parts needed to fix


p0300 is a random misfire. A scanner will need to tell the primary cyls that have problems. A (qualified) repair shop will need to check it. Could be from vac leaks, to fuel pressure, to spark problems????/

Dec 16, 2009 | 1999 Chevrolet Silverado 1500

3 Answers

Where is the purge solenoid location on a 1996 Chevrolet silverado 1500 ???? trucks runs bad and I was told it was that or some other vacuum leak also I have code p0300 and p1441 if anyone can help...


A P0300 DTC is a misfire code. The P1441 is a no flow during purge code which has to do with the purge solenoid. With the misfire code present I would say you have a vacuum leak on one of the hoses. The purge solenoid is located in the passenger side, rear of the intake manifold.

May 09, 2009 | 1999 Chevrolet Silverado 1500

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