Po174 chevy silverado - Vacuum Leaks. With most vehicles, the most common cause for the P0174 or P0171 code to show is a vacuum leak. Take a look around and see if you can find the vacuum leak. Here’s a great YouTube video on how to go about finding one. If the engine is letting in unmetered air, the intake manifold leaking is a very high likelihood.

 
Oct 15, 2023. #1. Chevy Silverado 2020 5.3 with 34,000 miles throwing P0171 & P0174 codes just showed up. BONE stock. Only thing to report is that I just had a one day trip with 300 or so miles and filled it up with gas just before I got home . I didn't notice if it came on yesterday but noticed it today. Otherwise all normal.. Septa 109 bus schedule

The 2019 Chevy Silverado 1500 LTZ is the perfect truck for those who want to cruise in style. With its sleek design, powerful engine, and luxurious interior, this truck is sure to ...The factory stereo installed in the Chevy Colorado only has an AM/FM stereo tuner and a CD player. Many aftermarket stereos, on the other hand, have auxiliary inputs, iPod control ...The yellow engine block light comes on in my 2003 Chevy Silverado 1500 4.8liter 4x4. Scanner reading yield PO171 and PO174 or too lean banks 1 & 2.The truck will rev to 2,200rpm on the cold (zero degr … read moreDownload Fixing A Code P0174 On A 2002 Chevrolet Silverado With Ron Bilyeu Avi On Demand in mp3 music or mp4 video for free.=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈==== How to Fix P0174 =====Engine Code P0174 Saving Repair ...P0174 code on a 2000 Silverado. The code indicates that the cylinder bank 2 (Passenger side) is running lean, as reported by the upstream O2 sensor on that side on the exhaust pipe. It could really be running lean, or it could be …Dec 14, 2023 · Trouble Code - P0171, P0174. Been getting occasional P0171, P0174 codes but the truck (07-13 Silverado 1500) runs great, idles great and is otherwise not having any performance issues at all. I cleaned the MAF, and throttle body, and installed 4 new Oxygen Sensors (Denso) and still getting occasional P0171, P0174 codes. This list includes a check engine light with a P2135 code caused by a faulty valve sensor in the Chevy Silverado’s throttle body. Luckily, this component is located at the top of the engine and should be quick for either you or your mechanic to swap out. 5. Overzealous knock sensor.2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.Chevrolet Silverado 1500: I have lean codes on a 2001 chevy. I have lean codes on a 2001 chevy silverado motor is the 4.8 codes are p0174 and p0171. I've changed the valve by tank the valve on the top … read more. ZZDaryl. Lead Auto Tech.The factory stereo installed in the Chevy Colorado only has an AM/FM stereo tuner and a CD player. Many aftermarket stereos, on the other hand, have auxiliary inputs, iPod control ...Howdy all, I have an 1997 k1500 with a 5.7 Vortec. I currently have code PO174 with no other codes. That is lean condition bank 2. Backstory, a few months ago my exaust pipe broke on my engine right side near the o2 sensor. I had a code for too lean and too rich coming on an off. I ran that way for a month and a half to get some remote work ...The following are the most common causes of the P0174 code. Faulty mass airflow (MAF) sensor. Blockage in the fuel filter and fuel injectors. The fuel pump is getting weak. Weakening fuel pressure regulator. The vacuum connector or PCV line may have cracks or damage. Defective oxygen sensor. Issues with PCM.The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1... 2. Enter the VIN in the parts catalog and go to the fuel injector rail parts section. 3. After the injector part number has been identified on the body of the injector, in the description column. For example, part number 12668390 highlighted in the table. To the left is the part number that will need to be order. Meet the Experts. 2018 Silverado 6.0 2500hd p0171 p0174 codes. truck has 1250. miles on it. Codes are p0171 and p0174. i did reset but - Answered by a verified Chevy Mechanic.Jun 3, 2012 · The fault codes are coming up as p0171 and p0174 running lean on both banks, it's running rough at idle and will sometimes stall. This sounds like a vacume leak to me but I suppose it could be air flow sensor, are there any common problems that would cause this fault? Like. A P1174 & P1175 trouble code means that your air to fuel ratio is either running too lean or too rich. Engines will have two banks. In traditional V-shaped engines, the 2-4 cylinders (depending on whether it is a V4 or V8, etc.) on the left side are considered “Bank 1” and the cylinder on the left are considered “Bank 2”.The 2015 Chevy Silverado 1500 is a reliable, powerful, and comfortable pickup truck that has been a top choice for drivers for years. The 2015 Chevy Silverado 1500 is powered by a ...On rare occasions, some customers may experience a hard start cold, brief rough running on cold start, black exhaust color, and/or SES light. If a SES light is experienced, DTCs P0172 and/or P0175 may be stored. If driveability symptoms are experienced, they will generally diminish within 1 minute of start up.The P0175 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0175 is set in along with the P0172 code, it is highly likely that the problem is caused by leaking fuel injectors. If there are no leaking fuel injectors, the next step is to replace the air filter and clean the Mass Air Flow (MAF ...PO171 PO174 The codes from HELL!!! Finally fixed. Maybe this will help you!Check out My Amazon Auto Accessories Store! Lets make that Weekend job less Painf...How to fix lean code on 4.8 engineP0171 sensor p0174 lean bank system too oxygen fuel ecuChevy silverado p0174 p0171 2003 p0332 Code p0171 2003 chevy chevrolet silverado fuel gm ask question ownP0171 code. Code p0171 diagnosis and repairP0171 fuel ford bank lean system too toyota mixture fault code air sensor injection causes ratio cars oxygen …Greetings viewers. In this video I dove into a 2014 Chevy Express with the 5.3L engine having a check engine light illuminated and stored codes P0172 and P01...2012 chevy silverado 1500 5.3 rough idle when cold codes po171 po174 po300 co571 - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.Jul 10, 2022 · Diagnostic trouble code P0174 means system too lean bank 2. This means the powertrain control module (PCM) has detected lean conditions in bank 2 in the air-fuel ratio (AFR). Lean conditions mean there is too much air or too little fuel. Bank here means the location of the cylinder head in v-type engines. Check out this article, bank 1 and bank ... A P1174 & P1175 trouble code means that your air to fuel ratio is either running too lean or too rich. Engines will have two banks. In traditional V-shaped engines, the 2-4 cylinders (depending on whether it is a V4 or V8, etc.) on the left side are considered “Bank 1” and the cylinder on the left are considered “Bank 2”.Get ratings and reviews for the top 7 home warranty companies in Chevy Chase, MD. Helping you find the best home warranty companies for the job. Expert Advice On Improving Your Hom...A failure counter increments if the stuck EGR valve condition is still present. This DTC sets when the counter reaches a predetermined value. This would cause the P0171 and P0174 to set. I have attached three documents that may help, View attachment P1404 EGR Valve Closed Pintle Position.docx View attachment Exhaust Gas …6 years 6 months ago - 6 years 6 months ago #13991. 2008 Chevy Silverado 2500hd 6.0 P0174 and a p0171 was created by drogan. 2008 Silverado 2500 6.0 has a p0171 and a p0174. Intake was smoked with no leaks truck came to me with 8 new injectors a new fuel pump new map and mass air flow sensor and new intake gaskets.245 posts · Joined 2014. #1 · Jun 29, 2015. Just got the following codes off my truck when the CEL came on: P0101, P0171, P0174, P0327. I pulled the intake all the way off including the manifold, gave it a good cleaning (including the MAF) and drove it around a bit only to have them come back. I cleared the codes and drove it to an …The 2015 Chevy Silverado 1500 is a dependable and powerful truck that can handle all your needs. Whether you’re hauling heavy loads, towing a trailer, or just running errands aroun...2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.Oxygen Sensor. The P0171 code is thrown when the bank one sensor one O2 sensor reports that your Silverado’s engine is running lean. The sensor on or right after the exhaust manifold is typically the sensor that reports the lean condition. If it is malfunctioning, it can cause a false P0171 code. Swap Test.Recently bought a single cab short box 4.3L V6 1500 and drove it home, was talking to family and let it idle a bit then got a p0430 code. I reset it then next day I let it idle again for a little and now I see p0430, p0171 and p0174. The following are the most common causes of the P0174 code. Faulty mass airflow (MAF) sensor. Blockage in the fuel filter and fuel injectors. The fuel pump is getting weak. Weakening fuel pressure regulator. The vacuum connector or PCV line may have cracks or damage. Defective oxygen sensor. Issues with PCM. P0171 sensor p0174 lean bank system too oxygen fuel ecuChevy silverado p0174 p0171 2003 p0332 Code p0171 2003 chevy chevrolet silverado fuel gm ask question ownP0171 code. Code p0171 diagnosis and repairP0171 fuel ford bank lean system too toyota mixture fault code air sensor injection causes ratio cars oxygen …How to fix a Ford P0174 engine code: Fuel Injection System Too Lean Bank 2A lean condition exists if the engine is getting more air than fuel in the cylinder...The P0175 code means that more gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0175 is set in along with the P0172 code, it is highly likely that the problem is caused by leaking fuel injectors. If there are no leaking fuel injectors, the next step is to replace the air filter and clean the Mass Air Flow (MAF ...How to Fix P0174 Engine Code in 2 Minutes [2 DIY Methods / Only $8.99] - YouTube. nonda. 91.2K subscribers. Subscribed. 1.3K. 333K views 3 years ago UNITED STATES. …P0171 and p0174 2002 Chevy Silverado. Her lately my truck has been pull codes p0171 and p0174. Which is for a lean condition on bank 1 and 2. Their is no vacume leak, the valve gasket is good. I'm thinking it's the mass air flow or the O2 sensors.Chevy Silverado and GMC Sierra Forum. 1.4M posts 181.3K members Since 2009 A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! Show Less . Full Forum Listing ...There is a Factory Service Bulletins for All 2000-2020 Chevrolet Models: 2000-2020 Chevrolet Factory Service Bulletin OBDII Code P0304 This Factory Service Bulletin explains how this condition may be caused by significant carbon build-up on the intake and/or exhaust valves due to fuel contamination or incomplete burning of the fuel.Jan 5, 2019 · P0171 and p0174 2002 Chevy Silverado. Her lately my truck has been pull codes p0171 and p0174. Which is for a lean condition on bank 1 and 2. Their is no vacume leak, the valve gasket is good. I'm thinking it's the mass air flow or the O2 sensors. Jan 19, 2021 · I have a 2004 Silverado Z71, 5.3 with 154K miles. Other than this problem the ruck runs great. I had the fuel lines and fuel pump replaced two months ago and after that, I started to get the P0171 and P0174 (bank 1 and 2 lean) and the long term fuel trims "LTFT" are 18-25% (both) There were no signs of issues cold or warm. P0171, P0174, P0300. Jump to Latest Follow 21 - 37 of 37 Posts. 1 2. P. PJesse · Registered. Joined ... A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! ...Causes of P0174 Code. Damaged or dirty MAF sensor. A leaky PCV valve. Weak fuel pump. Bad air-fuel ratio sensor. An air leak after the MAF sensor, such as a damaged intake manifold gasket. Improper or insufficient fuel pressure. Clogged or damaged fuel injector. Dirty fuel filters.P2099 is a generic OBD II code. It has the same meaning for the Chevy Silverado as it would any other vehicle. It specifically indicates that your Silverado detected that air-fuel mixture reading as the exhaust gas exits the catalytic converter on the bank 2 side of the engine is too rich. (too much fuel.P0171 and P0174 all indicate the engine is running lean. Not enough fuel or too much air such as a vacuum leak. P0300 indicate that the engine is misfiring, likely due to the fact that it is running lean. P0101 indicate a Mass AirFlow sensor reading being irrational. Possibly because the sensor has failed of there is a vacuum leak which will ...56 posts · Joined 2009. #1 · Feb 18, 2014. Folks, I'm having some issues with DTC codes P0300 and the random P0171 and P0174. I'm running a Bully Dog GT Gas tuner and KN CAI (recently added and code started shortly after). I've cleaned out the MAF several times, checked the plug wires and coils, check hoses and lines and can't seem to find ...P069E code indicates that the FPCM has identified an issue in the fuel system and is requesting the PCM turn on the check engine light. The FPCM supplies and regulates the voltage that goes to the fuel pump and the fuel pump relay. It can be a stand-alone module or a computer integrated into the PCM. Usually, the FPCM is a stand …Jan 11, 2017 ... My recently bought 2004 Chevy Suburban 1500 is throwing P0171 and P0174 codes. Which indicates lean conditions on both banks. I found the ...Hi Everyone: So I did the fuel injector cleaning just for the Injectors, the engine ran a little better but still high fuel trims!The engine was full of carb...Truck was taken to a shop for trouble codes p0171 and p0174 system bank 1 and 2 Lean. Customer states the shop replaced the fuel pump. I confirmed with the c...Jul 10, 2022 · Diagnostic trouble code P0174 means system too lean bank 2. This means the powertrain control module (PCM) has detected lean conditions in bank 2 in the air-fuel ratio (AFR). Lean conditions mean there is too much air or too little fuel. Bank here means the location of the cylinder head in v-type engines. Check out this article, bank 1 and bank ... The P0174 code means that more air than gasoline is detected in the exhaust gases exiting the combustion chamber. If the P0174 is set in along with the P0171 code, it is highly likely that the problem is caused by an intake leak. If there are no intake leaks, the next step is to replace the air filter and clean the Mass Air Flow (MAF) Sensor.code po174 02 silverado 5.3 engine. Answered in 15 minutes by: Chevy Mechanic: conquest.tsi. Hello.....this code is usually stored when engine is cold and is due to a vacuum leak from the intake manifold or sometimes to the intake itself. Fuel trims should be checked when cold to confirm the problem, this is the most common problem.IT held him to start with the easy and less expensive repair. He said it would be the fuel pressure regulator. 1998 Chevy Silverado 1500 4 - W 5.7 Vortec. Warning lights = check engine soon. Computer codes = P0174 Bank 2, P0171 Bank 1. Repairs made= New fuel pump - replaced fuel pressure regulator (FPR) - cleaned the mass air flow sensor ( MAF ...P0449 Failure Symptoms. Engine code P0449, P0440, P0441, P0446. Poor idling. Out of spec air-to-fuel ratios. Difficulty starting the engine, in some cases. If you have a small leak, you might not notice any symptoms. While the issue can cause some performance issues from AFR’s, it is usually not serious enough to cause major engine …Tricky P1174 / P1175 Codes. I have an Edelbrock intake manifold on my '08 Silverado 5.3 flex. I had a persistent EVAP leak code since installation due to my last minute vacuum harness I made, so around last christmas I pulled the intake and redid the vacuum hoses (as well as the fuel lines on the manifold). For the first few months after that ...2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.Jul 11, 2018 · P0171 and P0174 both indicate that there is a lean condition present in your Chevy Silverado. By themselves, these are some of the most common OBD2 codes. When they are together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning. Dec 16, 2008 ... I have a 2002 Avalanche 1500 with 90000 miles. Mods include KN filter, Hypertech Power Programmer. Lately the truck has been running VERY ...P2272 in the Chevy Silverado is a general diagnostic trouble code. It means that the "bank 2" downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that the vehicle is running lean (although it can, but usually doesn't).Engine Code P0171, P0174 Jump to Latest Follow 111K views 22 replies 12 participants last post by mmanville01 Sep 25, 2020Cw303. P0171 and p0174 are left side and right side lean codes. You either have a vaccum leak or lack of fuel throwing off your mixture settings your maf sensor can have something to do with this but throwing a fuel pressure gauge on when ts running might some some problems. I had the same codes and in turned out my fuel pressure was slightly down.2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.On rare occasions, some customers may experience a hard start cold, brief rough running on cold start, black exhaust color, and/or SES light. If a SES light is experienced, DTCs P0172 and/or P0175 may be stored. If driveability symptoms are experienced, they will generally diminish within 1 minute of start up.Today on DIY WILLY, well the check engine light has turned on. So time to plug in the code reader and see what's up. Hopefully we can solve the problem and m...2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.I have a 2009 GMC Sierra SLT with 5.3 liter vortec. I am getting intermittent P0171 and P0174 (O2 sensors) codes along with a very intermittent P0107, P0101, and P0300 (misfires on cylder 1 and 7 and random cylinder misfire). I have tested the fuel injectors (switching them around and cleaning them), ran sea foam through the gas tank, through ...Feb 26, 2015 · DTCs P0171, P0172, P0174 or P0175 may also set for the misfiring bank. Perform a fuel injector balance test for all 8 cylinders. If a fuel injector concern exists, it is possible to misfuel an entire bank of the engine, causing multiple cylinders on the same bank to misfire even though the root cause is a single fuel injector. P0154 is a relatively common trouble code. It’s generic, which means that it has the same meaning for any vehicle with OBDII ( Chevy Silverado or not). It means that the PCM/ECM is not detecting any activity from the sensor. There can be many reasons for this code to throw. These include a bad o2 sensor, blown heated element fuse, and wiring ...Labor: 1.0. The cost to diagnose the P2119 Chevrolet code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.Your car or truck has either a P0171, P0174 lean fault code or both stored in the pc, these codes derive from Oxygen Sensor (O-2) readings. A lean code or codes suggest that there surely is too-much air in the exhaust. Bear in mind parts shops have staff members having good motives nonetheless they may not have the experience necessary to ...I have a 1999 chevy truck with a rebuilt engine 4.3L V6. Engine light coming on for awhile and then going off for awhile.Cw303. P0171 and p0174 are left side and right side lean codes. You either have a vaccum leak or lack of fuel throwing off your mixture settings your maf sensor can have something to do with this but throwing a fuel pressure gauge on when ts running might some some problems. I had the same codes and in turned out my fuel pressure was slightly down.P0172 And P0175 Chevy Silverado Codes: Possible Reasons & Fixes. In short, P0172 refers to bank 1 having a rich fuel mixture to the engine. It’s the same for P0172 but for bank 2 instead. Both of these get triggered by the upstream oxygen sensor in your Chevy Silverado. A rich fuel mixture basically means that there’s either too much fuel ...Here is a youtube video of a guy that tests for leaks a different way. It is on a vortec 5.3L motor too: 2013 Silverado 1500 LT, Z71, 5.3L, 6L80e, 4X4, HD Towing pkg. If you can't fix it with a hammer, it is an electrical problem. This is an older thread, you may not receive a response, and could be reviving an old thread.May 31, 2019 ... MECANICO AUTOMOTRIZ UBICADO EN PUEBLA TEL CEL 2223378533.56 posts · Joined 2009. #1 · Feb 18, 2014. Folks, I'm having some issues with DTC codes P0300 and the random P0171 and P0174. I'm running a Bully Dog GT Gas tuner and KN CAI (recently added and code started shortly after). I've cleaned out the MAF several times, checked the plug wires and coils, check hoses and lines and can't seem to find ...Dec 3, 2020 ... Check Engine Light? System Too Lean - Code P0171 or P0174 on Your Car or Truck. 1A Auto: Repair Tips & Secrets Only Mechanics Know•1.1M views.

P0171and P0174 CODES CHEVY VORTEC ENGINE.Ron WilliamsMobile Fix Automotive26793 Madison Ave Suite 100Murrieta, Ca. 92562951-579-7146Website http://www.mobile.... Products offered by wal mart 450 supercenter

po174 chevy silverado

Nov 12, 2012 · Failed or Faulty Oxygen Sensor (bank 1, sensor 1) Sticking/Plugged or Failed Fuel Injector. Low Fuel Pressure (possible plugged/dirty fuel filter!) Exhaust Leak between Engine and first Oxygen Sensor. Possible Solutions: A lot of Times, Cleaning the MAF Sensor and Finding/Fixing Vacuum Leaks fixes the Problem. 35.6K subscribers. 75. 5.6K views 3 months ago. How to fix Chevrolet or GMC P0174 engine code: System Too Lean (Cylinder Bank 2) A P0174 Code is set when the Bank-2 upstream sensor-1 oxygen...The most common cause of the P0171 code – and the P0170 and P0173-P0174 codes – is unmetered air entering the combustion system. Most of the time, this happens due to faulty or dirty mass ...P2272 in the Chevy Silverado is a general diagnostic trouble code. It means that the "bank 2" downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. This does not necessarily mean that the vehicle is running lean (although it can, but usually doesn't).What is code P0174? The Diagnostic trouble code (DTC) P0174 indicates ‘System Too Lean (Bank 2).’. The P0174 engine code indicates that the air-fuel ratio in your vehicle is too …Jan 5, 2019 · P0171 and p0174 2002 Chevy Silverado. Her lately my truck has been pull codes p0171 and p0174. Which is for a lean condition on bank 1 and 2. Their is no vacume leak, the valve gasket is good. I'm thinking it's the mass air flow or the O2 sensors. I have a 2004 Silverado Z71, 5.3 with 154K miles. Other than this problem the ruck runs great. I had the fuel lines and fuel pump replaced two months ago and after that, I started to get the P0171 and P0174 (bank 1 and 2 lean) and the long term fuel trims "LTFT" are 18-25% (both) There were no signs of issues cold or warm.Po171 po174 codes will Chevy silverado 4.3l with po171 and po174 P0171 p0174 sierra silverado, my fix Ford explorer 4.0l v6 sohc p0171 p0174 lean codes- common cause. Fix Engine; Po174 Code Chevy Silverado 19 Oct 2023.Vehicle: 2000 Silverado 1500, 4.3l v6, 190k miles. Problem description: Starts and idles fine, but stumbles for about 5-10 seconds after I give it gas. As soon as it recovers, the truck runs fine. Occurs when engine is hot or cold. Throwing codes 171 and 174 (lean fuel banks 1 and 2). Getting about 16MPG, expecting to get 20mpg.P0121 Definition. P0121 will trigger in your Chevy Silverado if it’s TPS “A” circuit has an output voltage that goes above or below the sensor’s normal operating range. It’s a general powertrain code, which means that it has the same meaning regardless of who manufactured the vehicles (1996+).Greetings viewers. In this video I dove into a 2014 Chevy Express with the 5.3L engine having a check engine light illuminated and stored codes P0172 and P01...The P0174 code means that the O2 sensor on bank 2 has recognized a too lean mixture, and the imbalance is too great for the O2 sensor to correct the issue on its …The dealership replaced the engine under the Powertrain Warranty - so far, so good. Since I live about 3 1/2 hours away from where the truck died, when it was complete I had to pick it up on a Friday night after hours. I got in it, drove 30 miles or so, and the check engine light came on - P0171 and P0174. On Monday, I called the dealership ...GM-Man Discussion starter. 67 posts · Joined 2012. #1 · Mar 31, 2013. Hey, I have a 2000 GMC Sierra 5.3l V8 with 161,000 miles (260,000kms) and It has a P0300 Random Misfire code. The truck runs perfect around town and on the highway but the misfire is relative to RPM. If i hold the revs at 1900rpm or more it misfires and the SES light flashes.2 posts · Joined 2021. #1 · Apr 3, 2021. I ran a P0174 code the other day while driving but the truck ran like normal, had no weird noises, or weird idle. I opened the hood and cleaned the MAF sensor and listened for vacuum leaks but couldn't find anything. I reset the truck but the codes came back after I drive for about an hour.2007 Chevy Silverado 6.0 is getting P0171 and P0174. Ive replaced the brake switch because the C0561 came up also. It - Answered by a verified Chevy Mechanic56 posts · Joined 2009. #1 · Feb 18, 2014. Folks, I'm having some issues with DTC codes P0300 and the random P0171 and P0174. I'm running a Bully Dog GT Gas tuner and KN CAI (recently added and code started shortly after). I've cleaned out the MAF several times, checked the plug wires and coils, check hoses and lines and can't seem …The service engine soon light on my 2002 Silverado 2wd ext. cab pickup with 5.3L non-flex fuel came on. It throws a PO174 code. I have since replaced the plugs, plug wires, and temperature sensory. The code still came back on. It idles rough periodically, especially when first started when cold. It will drop about 200 - 300 rpm at idle..

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