Question about Chevrolet Silverado 1500

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I have a 2003 chevy silverado 5.3 4wd 1500 series and it is misfiring horribly. it keeps comin up with code p0300 random multilpe misfire and i forget the number but maf or vaf error so i replaced the mass air flow sensor or maf and replaced spark plugs and wires to all good top of the line stuff and truck is still miss firing horribly

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The coils are the next place to look.

Posted on Sep 03, 2010

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97 chevy 1500 sputters at idle in gear can feel it a little while driving no cat. past 2 years run bank1 lean code plugs clean HELP


If the engine is misfiring the check engine light would be on and blinking and the engine control module (PCM) would store a fault code or codes for the cylinders that are misfiring. A lean code will not cause a misfire unless the engine has a vacuum leak most often at the intake manifold gaskets. A misfire code looks like this:

P0300-P0306 for 6 cylinder and P0300-P0308 for a V8.
P0300 indicated a random engine misfire, this can be caused by all kinds of issues.

Feb 24, 2017 | Cars & Trucks

2 Answers

Has p0300 code misfire cyl 2 and 3


If it was just cylinder 2 or 3, the code would be 0302 or 0303. Instead, you have random misfires (probably) such that you should be checking things that affect the whole engine. Vacuum leaks, bad plug wires, bad coil(s) or ignition module are most likely, but even clogged exhaust, O2 sensors and bad battery can cause these problems. Yes, a battery can be good enough to start your car but still be bad enough to affect performance. If I had to guess, I would start by testing the ignition module. Most parts stores can test this if you remove it and carry it to them.

May 04, 2015 | 1998 Chevrolet Blazer

2 Answers

What are codes PO300, PO332, and PO756


P0300=Random/Multiple Cylinder Misfire Detected
P0332=Knock Sensor 2 Circuit Low Input (Bank 2)
P0756=Shift Solenoid B CKT Performance Or, Stuck Off

Get that sick puppy to a good, retired GM guy. NOT a dealership, Marie. Best of luck to ya, sweetie.

Feb 14, 2015 | 2005 Chevrolet Silverado 1500 2WD

2 Answers

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

2 Answers

2002 chevy silverado i have 3 codes. P0137, P0160, P0300


mean you replace front O2,codes mean back O2 sensor,spark plugs,fuel filter,could be battery[300].

Feb 27, 2013 | 2002 Chevrolet Silverado 1500

1 Answer

Ramdom misfire p0300


Please go to this link for diagnosis and repair of random misfire codes (P0300)

Sep 04, 2012 | 2000 Dodge Ram 1500 Truck

3 Answers

My 2000 chevy silverado has ap0300 misfire code , how do i fix ti


P0300....Random/Multiple Cylinder Misfire Detected

so its got a misfire and quickest way out here to avoid a expensive garage visit is to change plugs and Ht leads and see what happens ,HT leads is proper english for fire wires by the way ,see iam learning american ---slowly---

Mar 12, 2011 | Chevrolet Chevy Cars & Trucks

1 Answer

Po300 chevy silverodo sl 4.8 crew cab changed 4 coils tuned it up changed fuel filter clened fuel injecters change mapsencer thottle boddy that was no good changed preaser sceen on feul rail still comes up...


p0300 is a multible/random misfire, did you change the plug wires also !
  • 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

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

Feb 27, 2011 | 2003 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

3 Answers

Codes 1133-0131-0171-0300


p1133 - o2 sensor, Insufficiant Switching, Bank 1 Sensor 1.
p0131 - o2 sensor circuit, low voltage, bank 1 sensor 1
p0171 - Lean condition, Bank 1
p0300 - Random Misfire

I would be looking at the front passenger side oxygen sensor for issues. It may be bad, it may not be plugged in, bad wiring at harness.

The random misfire may be symptomatic of the o2 sensor problem.

Mar 17, 2009 | 2002 Chevrolet Silverado 1500

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