Cylinder 5 Misfire Chevy Silverado

Which Silverado Engine to Get: 5. Problems regarding Chevy 5. The misfire codes (other than a P0300) identify the engine cylinder that's missing or dead. Secondary air monitor will not run. See full vehicle list in description. When removing all the spark plugs, one of them (cylinder 3) is fouled with oil. 8L V8 Vortec engine started flashing a check engine light. No Misfire Diagnostic Trouble Codes. The P0355 may be. Fuel trim bank 1 is stuck at +25% WITH IGNITION ON and engine off. Yesterday on the way to work my 2000 Chevrolet Silverado 1500 4WD with the 4. Over time, the tick noise increased in volume and became more of a knocking noise. That gave the 1996 Silverado power to tow 6,000 lbs. 7-liter Vortec engine was tuned to generate 250 horsepower and 335 lb. i have had a recurring problem with my new 2012 chevrolet silverado 1500 lt (5. 7 ~ 276K Miles. Specialized in remanufacturing of diesel and gas cylinder heads; operated since 1973 and ISO 9001 certified. 3 liter misfire (part 2) - Duration: 7:48. Locate Coffeyville, KS 67337 car dealers and find your car at Autotrader!. By Kyle Cheromcha November 19, 2018. Check Engine Light On Problems of Chevrolet Silverado 1500. Car maintenance fun: running AC spikes temp gauge 18 posts Shouldn't take more than 5 minutes. Description: How does a P0300 code trigger the check engine light? This code will trigger the check engine light as follows: The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. Check Engine Light Code P0300 Random/Multiple Cylinder Misfire Detected. misfire, cylinder leakage or blo More Chevrolet Silverado Engine Service Bulletins of. 2019 Chevrolet Silverado 1500: Chevy Trucks It Up Towing and Payload Capacity When properly equipped, the 2020 Silverado 1500 can tow up to 13,400 pounds—1200 more than the strongest outgoing model. ChevySilveradoLtd. The 1996 Silverado came with a 5. Check engine light and P0300 misfire codes on Silverado Sierra Fix P0300 misfire code on Silverado Sierra. so i replaced all the plugs which where all black, i changed them @50000km before that. The idle was rough after a quick drive and thats when all of this started. The engine computer or PCM can detect a misfiring cylinder by monitoring the engine speed. Did a compression check and got 185 lbs on most some up to 190, with getting around 120lbs on the first pulse. I'm more worried about a bad injector washing out a cylinder and damaging the engine. Car problem(s) with the 2008 CHEVROLET SILVERADO 1500. 3-liter Vortec V-8. You already know an engine needs three components to fire the cylinder: fuel to ignite, oxygen to burn that fuel, and a spark to ignite the mix. 3L vortec motor. I'd start swapping stuff to a different cylinder and see if the misfire moves. This article covers a wide variety of noises common to the hard working Chevrolet Silverado. Q: Replace coil pack,fuel injector, spark plugs, wires. I changed spark plugs and wires. Research the 2000 Chevrolet Silverado 1500 at cars. We reviewed 5 best spark plugs for your Vortec engine. I started developing a misfire every once and a while. 7 - Cyl 8 Misfire - Valve Adjustment? 1995 Chevy Silverado 5. Chevy / GMC Issue with 5. i tested the plug wires they were good. Cylinder 1 misfire. In other words, the 5. This is the worst case scenario. Possibly a crankshaft bearing or tourque converter problem. 7 350 automatic trans started missing a week or so ago. Average repair cost is $2,870 at 109,450 miles. Home Service Bulletins 2004 Chevrolet Silverado 1500HDEngine Complaints TSBs misfire, cylinder leakage or blo. How much can a repair cause? It depends on the cause. I am getting a misfire on cylinder 6. Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. 3l Silverado. Also the Track Light is on and the engine runs like it has jumped time or has fouled plugs. Allied Motor Parts has over 150 years of experience of remanufacturing automotive and light truck cylinder heads. As soon as I accelerated off idle then the misfire goes away which is why he thought it was valvetrain, either a lobe that's worn down, a flat lifter, a bent valve or pushrod. I have a 1998 Chevy silverado 5. With and Without Misfire Codes. Your Chevrolet Silverado 1500 will be happy to know that the search for the right Ignition Coil products you've been looking for is over! Advance Auto Parts has 65 different Ignition Coil for your vehicle, ready for shipping or in-store pick up. A larger 4. In 2008, for example, the 5. Yesterday on the way to work my 2000 Chevrolet Silverado 1500 4WD with the 4. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn't getting enough throttle opening. Need to locate the coil for cyl #7 as it is misfiring and don't know which coil to choose or plug to inspect first. Browse your favorite brands affordable prices free shipping on many items. That's at idle. We reviewed 5 best spark plugs for your Vortec engine. Find Chevrolet Cars for sale in Coffeyville, KS 67337. P0300 Random/multiple cylinder misfire,due to low compression P0171,P0174 2007 chevy silverado. Buy Ignition Coil Set of 8 - Replaces 12558693, GN10298, UF271, 5C1083, C1208, D581 - Fits Cadillac Escalade, Chevy Silverado, Avalanche, Express 3500, Suburban, Tahoe, GMC Sierra, Savana, Yukon and more: Coil Packs - Amazon. 2000 Chevrolet Chevy C Silverado - 2WD. Chevrolet has revealed the first four-cylinder engine in the history of the Silverado pickup, a 310-horsepower, 2. Silverado Driver Side Blows Hot Details Chevy Silverado and GMC Sierra Truck Repair Help. By Kyle Cheromcha November 19, 2018. That gave the 1996 Silverado power to tow 6,000 lbs. I rescanned it, and it's still reading a misfire at 7. Over time, the tick noise increased in volume and became more of a knocking noise. I have a 97 chevy 1500 withh a 5. Cyl 7 is the last one to get fuel on the fuel rail, and thus any trash that get by the fuel filter collects at that point on the fuel rail. It has a 5. A blinking check engine light is a current misfire, the ECM can't discriminate what is causing the misfire, it could be the injector, coil, spark plug or the wire. The check engine light came on and it was running extremely rough. Cylinder 1 misfire. P0305 CHEVROLET Tech Notes The P0305 code means that the cylinder 5 is misfiring or is randomly misfiring. 3L has had strong results and thus GMC has used it in a lot more than just pickups. Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors. 3L Engine (RPO L83) or 6. What does this code mean anyway? The definition for this this P0171 code is Fuel Trim System Lean (Bank 1). I moved plugs, plug wires, coils and injectors to other cylinders, but the misfire at idle stays on cylinder 5. The ECU can’t always tell you what specific part is broken, but in the case of our truck, it had stored data indicating there was an engine misfire in Cylinder #4. This is the worst case scenario. Chevy Silverado misfire September 21, 2014. So far I've replaced all the plugs, plug wires, new fuel filter, and new coil pack and injector in the number 4 cylinder. 3 with 2 codes of a misfire in cylinger 8. 2005 Chevrolet Silverado 1500 5. Find local 2010 Chevrolet Silverado prices online. In 2008, for example, the 5. P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code. 3L V6 producing 195 hp. 3L V8 random misfire? (self. 7 ~ 276K Miles. If the reading is not between 11-18Ohms, the injector will need to be repalced. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Still the same thing #8 misfire. 7 Vortec with a misfire, P0300 code for 3 months. actually a friend of mine and I both have been, his 97 mine 99. 8L V8 Vortec engine started flashing a check engine light. When removing all the spark plugs, one of them (cylinder 3) is fouled with oil. Find car prices, photos, and more. I moved plugs, plug wires, coils and injectors to other cylinders, but the misfire at idle stays on cylinder 5. Tried checking all cylinders by testing the basics like checking the running compression and they were all fine. He asked if the 5 cylinder was efficient and dependable. as far as reliability that is good but idles poorly. Replaced the plug,reset the computer and runs great. I got a SES light on my dash panel and when I scanned for codes, it has a random misfire or P0300 fault. Chevy Silverado. Now, on my 98 Chevy C1500 (350) I am getting a misfire code for cylinder 5. How to Fix an Engine Misfire The best way to diagnose and repair a misfire problem is to use a CarMD. No Misfire Diagnostic Trouble Codes. Order Chevy Silverado Engine Cylinder Head online today. Average repair cost is $2,870 at 109,450 miles. This article covers a wide variety of noises common to the hard working Chevrolet Silverado. I have a 07 suburban LT 4x4 5. I own a 2010 Chevy 1500 Silverado with a flex-fuel 5. Fuel trim bank 1 is stuck at +25% WITH IGNITION ON and engine off. I started developing a misfire every once and a while. If there is not a Cylinder Misfire Counter, then you might have to switch components—such as coils, spark plugs, etc. 2012 Chevrolet Silverado 1500 LTZ 5. I had it scanned, and it came back as a cylinder 7 misfire. 7lt vortec silverado 2wd p0300 random multiple cylinder misfire Discussion in ' Chevy Silverado Forum (GMC Sierra) ' started by EARL HUTCHINSON , Sep 25, 2017. See full vehicle list in description. Repair Information for P0300 Chevrolet code. Browse your favorite brands affordable prices free shipping on many items. Every other test ran came back as good but was told it's an automatic fail if that indicator light is on. What is the best way to fix a misfire? If i replace the wires,cap,rotor,and it still misses, what would be the next step?any help, thanks!. See full vehicle list in description. P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code. GM has issued a service bulletin #PIP5147A to address a situation where you have a check engine light and retrieve trouble codes relating to a misfire. Engine Stalls, Misfire Code, & Cylinder Misfire The engine may be stalling because it isn't getting enough throttle opening. A low-speed forward emergency braking system has been added as part of the. The misfire codes (other than a P0300) identify the engine cylinder that's missing or dead. 3L Misfire, MIL Lamp on Posted to GM Driveability on 2/3/2013 15 Replies This is a new truck that we have just got the customer into after some haggling about accessories. I got a code for a bad cam and crank senor. Therefore with AFM (Active Fuel Management, formerly known as displacement on demand (DoD)). Check Engine Light Code P0300 Random/Multiple Cylinder Misfire Detected. If no misfire trouble codes are present or you have a P0300, then a cylinder balance test is recommended to find the misfiring cylinder. I had it scanned, and it came back as a cylinder 7 misfire. Fix Chevy Silverado misfire Some Chevy Silverado owners with the 4. I got a SES light on my dash panel and when I scanned for codes, it has a random misfire or P0300 fault. We still have to wait to get the specs for the 3. Engine Misfire codes on Chevrolet Malibu?. Find car prices, photos, and more. Misfire on #5 Cylinder when idling a machanic said the spider injectors need to be replace and he replace the spider injectors but #5 Cylinder still misfire at idle what else could be causing #5 Cylinder misfiring? The spark plugs and spark plugs wires are good. P0300 Random/multiple cylinder misfire,due to low compression P0171,P0174 2007 chevy silverado. Primary or secondary ignition components can go bad and prevent the spark from being delivered properly to the cylinder which would result in an engine or cylinder misfire. did plugs and wires and coil and didnt fix it. Check Engine Light On Problems of Chevrolet Silverado 1500. 3-liter Vortec V-8. If a fuel injector concern exists, it is possible to misfuel. Regarding a ticking noise or misfire on 2005-2014 GM V8 engines. I’m going to use a 2003 Chevrolet Tahoe with a 5. 3L with 100K miles on it. Tested the wiring with a noid light, tested the coil with an inline spark tester. In 2008, for example, the 5. I checked scan tool got a code for cylinder#7 misfire. I changed the plug and wire on 7 which didn't solve the problem. The PCM determines this information using the crankshaft position sensor and camshaft position sensor. 7 4 Answers Can someone ease tell me why I'm always getting a p0305 misfire what could cause #5 to keeping doing this 1998 Chevrolet C/K 1500 Silverado Stepside 4WD. Cylinder 3 had a bit of ash but not near as much as 5. Still the same thing #8 misfire. The injector can be clogged or simply worn from age and mileage causing it to not fire properly. An important thing to understand when finding the location of Cylinder 5 is that it's going to be the fifth cylinder in the firing order. 3L? Is the driver side the odd bank and the passenger side the even bank? And does the numbering start from back or front of engine. Includes yearly updates, specifications, road test ratings and trouble spots. Is this also true for 2011 Chevy Silverado, cause I swapped coil, wire, fuel injector, new plug, checked voltage on harness and on the OBD reader show the misfire count and is always cylinder 5 there is always a misfire it never fires by the way the count goes up so quickly. I just want to know what is where and which cylinder is which. In other words, the 5. 8L V8 Vortec engine started flashing a check engine light. Engine light is on and have rough idle. cap rotor fuel filter fuel pressure/pump are good number 6 injector heres the kickerWhen I replaced the number 6 fuel injector, the misfire jumped to cylinder 5. Browse your favorite brands affordable prices free shipping on many items. 3L? Is the driver side the odd bank and the passenger side the even bank? And does the numbering start from back or front of engine. 3L engine was used in the GMC Envoy, Buick Rainier, Chevy Avalanche, Chevy Tahoe, Saab 9-7X, Sierra, Silverado, Suburban, and Trailblazer. The Chevrolet Silverado is a full-size pickup truck. Typically, cylinders 3,4,5 or 6 will be the ones to experience this. Posted to GM Driveability on 1/13/2010 5 Replies. I scanned vehicle and found a misfire present on #6 cylinder on a … Continue reading "2004 Chevrolet Silverado 2500HD , 6. A low-speed forward emergency braking system has been added as part of the. misfire, cylinder leakage or blo More Chevrolet Silverado Engine Service Bulletins of. Cylinder 1 misfire. I've got a 99 gmc sierra with the 5. —in order to isolate the root cause of the misfire. I've read tons of threads on 2 and 7 cylinder injector harness and the odd #8 cylinder failure, but looking at how I interpret cylinder numbers 2 and 7 are at complete opposite ends of the engine. 3L silverado had this exact same problem, P0300 random misfire, we ended up replacing 4 O2 sensors, one cat, new plugs wires and the problem went away, but since you say your O2's are reading good I would say Cats are plugged possible?. P0301 - Cylinder 1 Misfire Detected P0303 - Cylinder 3 Misfire Detected The tech decided to test the engine vacuum and found that the engine only had 6 inHg of vacuum at idle. Repair Information for P0300 Chevrolet code. I have a misfire that cannot be diagnosed!!!! 1999 5. Cylinder misfire on 00' V6 Silverado? Engine has 140,000m Threw a P0306 Code changed: plugs wires dist. Free Same Day Store Pickup. It started out with a code for misfire #4 cyl and now its a random misfire. 3 has a misfire number 2 cylinder. For example, if the misfire is caused by a bad on-plug ignition coil, which is quite common on many newer cars, the repair might involve replacing a bad coil and all the spark plugs. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. misfire, cylinder leakage or blo More Chevrolet Silverado Engine Service Bulletins of. 3 liter engine. You already know an engine needs three components to fire the cylinder: fuel to ignite, oxygen to burn that fuel, and a spark to ignite the mix. 3L Vehicle Application: 2003 Chevrolet Silverado 1500 5. GM has issued a service bulletin #PIP5147A to address a situation where you have a check engine light and retrieve trouble codes relating to a misfire. This could cost $300-$400 for a 4-cylinder engine or $450-$700 for a V6. 9 liter 4 cylinder , the 2. The next code that repeatedly comes up is cyl 5 misfire. See 2017 Chevrolet Silverado 1500 technical service bulletins (TSBs) at TrueDelta, organized by model year and problem area misfire, cylinder PIP5439 This. Description: How does a P0300 code trigger the check engine light? This code will trigger the check engine light as follows: The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. this is a dangerous condition in that it results in a loss of power while operating the vehicle upon the roadway. Tested the wiring with a noid light, tested the coil with an inline spark tester. 3L silverado had this exact same problem, P0300 random misfire, we ended up replacing 4 O2 sensors, one cat, new plugs wires and the problem went away, but since you say your O2's are reading good I would say Cats are plugged possible?. Now, on my 98 Chevy C1500 (350) I am getting a misfire code for cylinder 5. I have hooked up the diagnostic scope at chevy and have identified the misfire but am unable to pinpoint the problem. 2001 Chevy Silverado. In many instances, stalling ends up being an idle control motor at its limit or a failed motor. That gave the 1996 Silverado power to tow 6,000 lbs. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire. The probability is that the fault is electrical rather than mechanical. So checked the spark plug,it was terrible. We figure a weak coil caused this. An important thing to understand when finding the location of Cylinder 5 is that it’s going to be the fifth cylinder in the firing order. I had experienced a slightly rough idle previously (nothing serious) and had been unable to track it down. The engine light comes on and I taken it to several dealerships and when they hook up to computer it shows multiple misfires. I have a 2000 Chevy Silverado 5. P0300 Random/multiple cylinder misfire,due to low compression P0171,P0174 2007 chevy silverado. 08 Chevy Silverado 5. Mileage may suffer as well when your Silverado has P0304 as well. But problem is still there, I did notice on spark plug #7 it was wet dark like oil smelled like fuel. An important thing to understand when finding the location of Cylinder 5 is that it's going to be the fifth cylinder in the firing order. Learn what does P0300 Chevrolet Cylinder Misfire Detected Random Cylinders means, location and how to repair? When a misfire occurs, engine speed will fluctuate. 2L V8? [Ask TFLTruck] and cylinder deactivation. 3L z-71 V-8 4wd 70000plus kms my problem is i got a code which read P0300- misfire. Cyl 7 is the last one to get fuel on the fuel rail, and thus any trash that get by the fuel filter collects at that point on the fuel rail. What is the best way to fix a misfire? If i replace the wires,cap,rotor,and it still misses, what would be the next step?any help, thanks!. 3 vortec and AFM. In this case it's cylinder #5. The check engine light came on and it was running extremely rough. Troubleshooting Code P0304 Misfire Detected Cylinder #4 Chevy Trailblazer 2002-2009 | Video 1 of 2 - Duration: 08 Chevy Silverado 5. Fix Chevy Silverado misfire Some Chevy Silverado owners with the 4. 3 liter misfire (part 2) - Duration: 7:48. My 2001 Chevy Silverado 1500, 5. 7 - Can someone ease tell me why I'm always getting a p0305 misfire what could cause #5 to keeping doing. Do anyone have … read more. This article will help you to understand some of the most common causes of misfires and misfire codes (P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308) on the GM 4. 3L? Is the driver side the odd bank and the passenger side the even bank? And does the numbering start from back or front of engine. Cylinder 5 misfire 1998 Chevrolet Silverado 5. 3 liter engine) going into "reduced engine power mode" which also results in the disabling of stability control and traction control. In 2008, for example, the 5. speeds with the CEL only coming on intermittingly. This case study will involve a couple different and effective ways that I use to diagnose fuel trim issues. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. com and find specs, pricing, MPG, safety data, photos, videos, reviews and local inventory. I have a 2005 Silverado fully loaded with duel control a/c. 3L with 100K miles on it. The misfire codes (other than a P0300) identify the engine cylinder that's missing or dead. Average repair cost is $2,870 at 109,450 miles. Secondary air monitor will not run. 3 v8, 130,000 miles. Find local 2010 Chevrolet Silverado prices online. Home Forums > Chevy Truck Tech Forums > Chevy Silverado Forum (GMC Sierra) > 98 5. GM on Chevy Silverado 4-Cylinder Fuel Economy: Don't Look at the EPA Rating The company claims the pickup's real-world mileage will top its middling rating. Free Same Day Store Pickup. P0304 is a cylinder specific misfire code, which means that Cylinder 4 is misfiring and causing the code. Chevy Silverado 2003 6. Engine runs very rough when excellerating then seems to smooth out at normal driving speed. speed and/or a misfire with a P0300-P0308 DTC. 7L equipped pick ups and SUVs. runs a little rough, while driving under normal conditions it sputters, hesitates, and also will backfire, under heavy acceleration no noticeable skip, no sputters, and does not hesitate or backfire. I have had the car hooked up to a diagnostic code reader and it says that there is a misfire on cylinder 5 coil. com FREE DELIVERY possible on eligible purchases. 2000 Chevrolet Silverado Z71 1500 5. An important thing to understand when finding the location of Cylinder 5 is that it's going to be the fifth cylinder in the firing order. Silverado) They did say there was a pending misfire on cylinder 4 but that it wasn't an. The check engine light came on and it was running extremely rough. Motor Trend reviews the 2010 Chevrolet Silverado where consumers can find detailed information on specs, fuel economy, transmission and safety. Example: cylinder head, pistons and rings, and timing belt/chain. 7lt vortec silverado 2wd p0300 random multiple cylinder misfire Discussion in ' Chevy Silverado Forum (GMC Sierra) ' started by EARL HUTCHINSON , Sep 25, 2017. Buy Ignition Coil Set of 8 - Replaces 12558693, GN10298, UF271, 5C1083, C1208, D581 - Fits Cadillac Escalade, Chevy Silverado, Avalanche, Express 3500, Suburban, Tahoe, GMC Sierra, Savana, Yukon and more: Coil Packs - Amazon. P0171 is a very common code for any ODB2 vehicle. Cylinder 3 had a bit of ash but not near as much as 5. 8L may encounter an intermittent P0300 misfire trouble code, along with excessive emissions, poor idle quality, hesitation, and stalling. Cylinder 5 misfire 1998 Chevrolet Silverado 5. The engine computer or PCM can detect a misfiring cylinder by monitoring the engine speed. The base Work Truck trim is powered by a 4. Need to replace the cam shaft and all. Chevy Silverado 2003 6. Easy to use parts catalog. It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy. To see how frequently Chevrolet Silverado 1500 problems occur, check out our car reliability stats. Learn about this problem, why it occurs, and how to fix it. We reviewed 5 best spark plugs for your Vortec engine. Replaced the plug,reset the computer and runs great. Changed the spark plug but nothing has changed. That gave the 1996 Silverado power to tow 6,000 lbs. 3 what does this code mean. It has a 5. But problem is still there, I did notice on spark plug #7 it was wet dark like oil smelled like fuel. The engine is also not firing all of the fuel, so raw fuel is also passing through Cylinder 4 into the exhaust. P0171 is a very common code for any ODB2 vehicle. That means that multiple cylinders misfire at random. It is a 91 chevy truck with the 350 (5. Fuel trims at idle and at cruise were in a fairly normal operating range of -5 to +9. Learn what does P0300 Chevrolet Cylinder Misfire Detected Random Cylinders means, location and how to repair? When a misfire occurs, engine speed will fluctuate. Basics Causes of a Misfire Condition. Chevy V8 Misfire Caused by Excessive Cam Retard. Browse your favorite brands affordable prices free shipping on many items. 3L silverado had this exact same problem, P0300 random misfire, we ended up replacing 4 O2 sensors, one cat, new plugs wires and the problem went away, but since you say your O2's are reading good I would say Cats are plugged possible?. Changed the spark plug but nothing has changed. Order Chevy Silverado Engine Cylinder Head online today. The P0305 code means that the cylinder 5 is misfiring or is randomly misfiring. cap rotor fuel filter fuel pressure/pump are good number 6 injector heres the kickerWhen I replaced the number 6 fuel injector, the misfire jumped to cylinder 5. 3L 6cyl 4A) on Edmunds, or submit your own review of the 2007. 2007 Chevy Tahoe misfire #7 and throttle position sensor came up on obd2. How much can a repair cause? It depends on the cause. According to the scan tool, cylinder 4 is misfiring the most, with cylinder 3 having some as well (about 5:1 ratio cylinder 4 to 3). this is the easiest and fastest thing to do and its free! If this doesnt help and the misfire is. Find local 2010 Chevrolet Silverado prices online. 3 L VA Towing it is great especially since I have the towing package which has grade braking but I don't like the fact that it didn't come. Looked corroded and maybe an oil residue. Also the Track Light is on and the engine runs like it has jumped time or has fouled plugs. 7 Vortec with a misfire, P0300 code for 3 months. Chevrolet Silverado 1500 Engine Problems. The Chevrolet Silverado is a full-size pickup truck. 2003 Chevy Silverado dreaded P0300 random misfire was created by Pashos I recently received this vehicle from my brother-in-law, I have done the maintenance on this vehicle for years and have never been able to figure out the random misfire. I am logging a misfire on cylinder 3 only white at idle. Did a compression check and got 185 lbs on most some up to 190, with getting around 120lbs on the first pulse.