P0446 gm - P0446 Definition. P0446 is a standard OBDII trouble code, applicable to any make or model of vehicle, whether it’s a Tahoe or not. Here’s its technical definition: P0446: Evaporative Emission Control System → Vent Control Circuit → Malfunction. In layman’s terms, P0446 indicates a problem with the EVAP system vent control valve.

 
P0446 I put in new evap vent solenoid and new canister and new gas cap still code still coming on. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with GM. The GM Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so …. Tattoo policy marine corps

P0446 Code. I've got a 2001 Silverado 1500 with the 4.8 V8. The truck has 84,000 miles on it and has the P0446 code and P0446 pending code. I did some research and replaced the vent solenoid thing between the cab and bed. The light came back on two days later. I decided to replace the gas cap, and the light came on again.A prevalent issue with the GMC Canyon is the P0446 code. This code corresponds to a specific number obtained when connecting your Canyon to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …This is a common issue that stumps a lot of people - the dreaded Chevy P0446 code. This code causes folks to think new charcoal canisters, vent valve solenoi...Dec 2, 2020 ... 2003 Chevy Silverado with a code of p0446 evap vent control problem and solution.The fault code P0446 means your vehicle’s evaporative emission control system or the vent valve in the EVAP system is malfunctioning. ... Note: The fault code P0446 is one of the most common trouble codes with the GMC Sierra and Chevy Silverado. On the other hand, the Toyota Camry hasn’t listed the code P0446 since the 2007 model. ...Here are the most common problems that will throw the code: The most common causes of P0446 are: A Faulty or failed EVAP vent solenoid. Clogged or blocked EVAP charcoal canister. Damaged or corroded EVAP system wiring or connections. Failed EVAP pressure sensor. Malfunctioning EVAP purge solenoid. Bad fuel cap.A prevalent issue with the Chevy Venture is the P0446 code. This code corresponds to a specific number obtained when connecting your Venture to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …P0446 means the vent valve in the EVAP system is malfunctioning. Our expert mobile mechanics can diagnose and fix your P0446 trouble code wherever you are. ... Note: The fault code P0446 is one of the most common trouble codes with the GMC Sierra and Chevy Silverado. On the other hand, the Toyota Camry hasn’t listed the code P0446 since the ...P0446 Code on my 2007 Chevy Avalanche. Hi there I am having a issue with my truck and I am racking my brain trying to figure some things out with it. If you guys can please help me that would be so great. First problem I have a code that is popping up that is p0446 and my second problem is my remote key start is not working does that have ...P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy HHR’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy HHR is the P0446 code.A prevalent issue with the GMC Terrain is the P0446 code. This code corresponds to a specific number obtained when connecting your Terrain to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …Code P0446. Hi I've got a 2000 gmc sierra 1500 5.3. The sending unit on my fuel pump has not been working for some time, so about 3 months ago I replaced it with a Delphi FG0407 which my research indicated should be the best option. I noticed after the install, that the new pump is noisier bc it made a hissing/squirting sound.This truck came to us for a second opinion on the check engine light, P0446. The first shop quoted a vent solenoid replacement, but the customer was skeptica...My CEL light is on and I get the P0446 code (Evaporative Emission System Vent Control Circuit). This happened two years ago and I replaced the Vapor Canister Vent Solenoid and it fixed the problem. It lasted about a year and now the same code came back and it's E-Test time. This time I replaced the Purge Valve up front on the engine as well.8 Dec 2020 ... 2014 Chevrolet Silverado code p0446. 2014 Chevrolet Silverado code p0446. 36K views · 3 years ago ...more. dennis ranck.P0446 Definition. P0446 is a standard OBDII trouble code, applicable to any make or model of vehicle, whether it’s a Malibu or not. Here’s its technical definition: P0446: Evaporative Emission Control System → Vent Control Circuit → Malfunction. In layman’s terms, P0446 indicates a problem with the EVAP system vent control valve.What is a P0446 Code? Better yet, what the heck is a Evaporative Emission System Vent Control Circuit? Well I ran into this problem with my 2007 Chevrolet Ta...Apr 19, 2020 ... This 2005 Chevy equinox had a p0446, and would not run the evap monitor!! Here's a semi detailed explanation of why it is so important for ...A prevalent issue with the GMC Yukon is the P0446 code. This code corresponds to a specific number obtained when connecting your Yukon to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for …Jun 26, 2019 ... It was the fuel tank pressure sensor. I looked at the exploded view of a GM parts site and could see the tank had a dip next to the sending unit ...P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Express’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Express is the P0446 code.Steps to fix code P0446 & P0455. Check the Gas Cap. Inspect the condition of the gas cap. Check the seal and make sure it isn’t broken or dry-rotted. Test the gas cap and make sure it’s tightening securely. Check the Purge Valve. The purge valve is also a likely cause of codes P0446 and P0455.P0446 GMC Sierra. Uno de los códigos de problemas más comunes con el GMC Sierra es el Código P0446. Este código de avería hace referencia a un número que te dan cuando conectas tu Sierra a un escáner OBDII. P0446 Indica que hay una avería en el sistema de control de emisiones por evaporación. Suele aparecer con otros códigos, como ...The fault code P0446 means your vehicle’s evaporative emission control system or the vent valve in the EVAP system is malfunctioning. The EVAP system comprises several critical components, including the gas cap, charcoal canister, purge valve, and vent valve. These EVAP system components work together to prevent harmful gas vapor from ...Dec 18, 2018 · Here are the most common problems that will throw the code: The most common causes of P0446 are: A Faulty or failed EVAP vent solenoid. Clogged or blocked EVAP charcoal canister. Damaged or corroded EVAP system wiring or connections. Failed EVAP pressure sensor. Malfunctioning EVAP purge solenoid. Bad fuel cap. Aug 7, 2018 · P0446 Definition. P0446 is a standard OBDII trouble code, applicable to any make or model of vehicle, whether it’s a Tahoe or not. Here’s its technical definition: P0446: Evaporative Emission Control System → Vent Control Circuit → Malfunction. In layman’s terms, P0446 indicates a problem with the EVAP system vent control valve. Here are the most common problems that will throw the code: The most common causes of P0446 are: A Faulty or failed EVAP vent solenoid. Clogged or blocked EVAP charcoal canister. Damaged or corroded EVAP system wiring or connections. Failed EVAP pressure sensor. Malfunctioning EVAP purge solenoid. Bad fuel cap.Dec 5, 2020 ... As for it being the vent valve, my understanding is that this code appears when the system fails a pressure test indicating a blockage somewhere ...Subject: MIL Illuminated, DTC P0442, P0446, P0455 or P0449 Set– Fuel Tank Hard to Fill – Moisture, Water, Corrosion at EVAP CVS Valve Models: 2007-2010 Cadillac Escalade Models 2007-2010 Chevrolet Avalanche, Suburban 1500, Tahoe ... GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written …Here are the most common problems that will throw the code: The most common causes of P0446 are: A Faulty or failed EVAP vent solenoid. Clogged or blocked EVAP charcoal canister. Damaged or corroded EVAP system wiring or connections. Failed EVAP pressure sensor. Malfunctioning EVAP purge solenoid. Bad fuel cap.Blocked vapor canister. Malfunctioning EVAP or fuel pressure sensor. Poor electrical connection such as shorted wire (Hyundai, Isuzu) A faulty purge or vent …A prevalent issue with the Chevy Venture is the P0446 code. This code corresponds to a specific number obtained when connecting your Venture to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a …Jim Musselman Discussion starter. 1 post · Joined 2017. #1 · May 4, 2017. My 2006 Silverado threw the code P0446 (EVAP Vent circuit malfunction). I looked at some of the other boards online as to find out how to fix. I have replaced the purge valve solenoid in the engine compartment and the vent valve solenoid under the truck.Shop for New Auto Parts at 1AAuto.com http://1aau.to/c/240/A/evap-emission-control-system-partsEVAP Explained! It's one of the most common OBDII trouble code...P0446 was the code stored in it.... In this video I have a look at a 2003 Chevrolet Suburban that came in with the SES light on with a code for the EVAP system. P0446 was the code stored in it....Socrates is a Web-based program for General Motors’ employees. Employees use the program to stay informed about changes and updates within the company. Employees must register to u...What can cause the code P0446: - faulty vent control valve. - blockage at the vent hose, vent filter or vent control valve. - open or short in the vent control valve circuit. - bad …P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your GMC Yukon’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the GMC Yukon is the P0446 code.P0446 Definition. P0446 is a standard OBDII trouble code, applicable to any make or model of vehicle, whether it’s a Colorado or not. Here’s its technical definition: P0446: Evaporative Emission Control System → Vent Control Circuit → Malfunction. In layman’s terms, P0446 indicates a problem with the EVAP system vent control valve.2011-2013 GMC Sierra 2014 GMC Sierra 1500 2014 GMC Sierra 2500/3500 2015 GMC Sierra Attention: This Bulletin also applies to any of the above models that may be Middle East, Israel and Chile Export ... P0446, P0455 or P0449 set as current or in history and there may be evidence of dust or water intrusion at the evaporative emissions (EVAP ...Aug 7, 2018 · Conclusion. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Avalanche’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Avalanche is the P0446 code. Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a Chevy S10. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system’s purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, they all …21 Dec 2016 ... 26 - GM P0446 Vent System Performance-Diagnose & Fix it Right the First Time! ... 2014 Chevrolet Silverado code p0446. dennis ranck•36K views · 10 ....Code P0446. Hi I've got a 2000 gmc sierra 1500 5.3. The sending unit on my fuel pump has not been working for some time, so about 3 months ago I replaced it with a Delphi FG0407 which my research indicated should be the best option. I noticed after the install, that the new pump is noisier bc it made a hissing/squirting sound.ACDelco 214-2082 GM Original Equipment Vapor Canister Vent Valve Solenoid ... it around cleared the HTR and CAT NO visible codes on main screen but when i do more diganosis it shows U1300,p0442,p0446,p0455,p0496,p0741,p1153,p1133,p0133,p0153 . Save Share. Like.P0446 Code. I've got a 2001 Silverado 1500 with the 4.8 V8. The truck has 84,000 miles on it and has the P0446 code and P0446 pending code. I did some research and replaced the vent solenoid thing between the cab and bed. The light came back on two days later. I decided to replace the gas cap, and the light came on again.A prevalent issue with the GMC Sonoma is the P0446 code. This code corresponds to a specific number obtained when connecting your Sonoma to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Table of Contents Definition Symptoms Causes Diagnosis How to Fix P0446 Definition P0446 is a standard OBDII trouble code,P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your GMC Envoy’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the GMC Envoy is the P0446 code.Mar 1, 2019 · Could be as easy as a "nicked" Teflon o ring. Go back at the gas tank area, disconnect the EVAP line and hand vacuum pump the line leading back to the EVAP canister solenoid. If you can't get any vacuum, head towards the EVAP solenoid. If you can hold vacuum, head towards the gas cap / filler nozzle for leaks. Steps to fix code P0446 & P0455. Check the Gas Cap. Inspect the condition of the gas cap. Check the seal and make sure it isn’t broken or dry-rotted. Test the gas cap and make sure it’s tightening securely. Check the Purge Valve. The purge valve is also a likely cause of codes P0446 and P0455.Hi there, This 2017 Chevy Cruze has 2 EVAP codes P0446 and P0451. The dealer quoted the customer for a new fuel tank pressure sensor and vent hose. When we d...Yes, P0440, P0441, and P0446 codes are all related to the evaporative emission control system in a GMC Envoy. The P0440 code indicates a general issue with the system, while the P0441 code signals a problem with the EVAP system’s purge flow, and the P0446 code is related to vent control issues. While these codes are distinct, …systemcheck2006. 167 posts · Joined 2011. #3 · Oct 15, 2013. P0446 Evaporative Emission Control System Incorrect Purge Flow. "If you went in the same direction as everyone else, then you'd be normal." Like. B.Dec 4, 2011 ... Thanks for posting back. Tags 01, 2001, blazer, cap, chevrolet, chevy, fuel, gas, gauge ...Gas caps are inexpensive and frequently the solution to code P0446. 3. If the gas cap didn't work, examine the EVAP system for leaks: Remove the vent tube from the EVAP Vent Control Valve by pinching it. Use an EVAP smoke machine leak check to pressurize the EVAP system and check if any hoses or seals are leaking smoke.P0446 GMC Sierra. Uno de los códigos de problemas más comunes con el GMC Sierra es el Código P0446. Este código de avería hace referencia a un número que te dan cuando conectas tu Sierra a un escáner OBDII. P0446 Indica que hay una avería en el sistema de control de emisiones por evaporación. Suele aparecer con otros códigos, como ...Jan 14, 2024 · Code P0446 in a GMC Sierra refers to a problem with the evaporative emission control system. This code indicates that there is a malfunction in the system, specifically with the vent control circuit. The evaporative emission control system helps reduce harmful fuel vapors from escaping into the atmosphere. When this code appears, it means that ... Jul 21, 2022 · Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition. There is a bulletin for the following models: 1999-2007 GMC Sierra (Classic) Models. 2007-2008 GMC Sierra Models. GMC Factory Service Bulletin OBDII Code P0446. User Submitted Video. The P0446 code in your GMC Sierra indicates a problem with the Evaporative Emission Control (EVAP) system, specifically relating to the vent control circuit. This system prevents gasoline vapors from escaping into the atmosphere, and any malfunction can affect your truck's performance and emissions.Although the severity of a P0446 code is low, issues with your vehicle’s EVAP system should not be overlooked under any circumstances. Overlooking a problem with your vehicle’s EVAP system ...Help support the channel and become a patron.https://www.patreon.com/squarebodystuff Trouble codes P0442 & P0446 and fuel filler issues on our 2005 Chevy Tah...Conclusion. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Monte Carlo’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Monte Carlo is the P0446 code.470 posts · Joined 2018. #2 · Mar 9, 2020. Code criteria; P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit. This can be caused by either too little or too much electrical resistance.P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Impala’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Impala is the P0446 code.Dec 25, 2018 · Conclusion. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Cadillac Escalade’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Cadillac Escalade is the P0446 code. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your GMC Sierra’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the GMC Sierra is the P0446 code.Code P0446 on a 05 Chevrolet Impala. Hey everyone, trying troubleshoot the code P0446 on my son's 05 Chevrolet Impala with the 3.8L with 31K miles. Also of note, the fuel gauge will read waaaayyy past full to where the gauge needle is actually getting stuck against the base of the gauge's needle next to it.Description. This Diagnostic Trouble Code (DTC) tests the Evaporative Emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of vacuum to be developed in the EVAP system. The Engine Control Module (ECM) commands the EVAP purge solenoid valve Open and the EVAP vent solenoid valve Closed.A code P0446 could mean one or more of the following has happened: Faulty evap vent valve Open, short or excessive resistance on Vent valve control circuit ... 2013-2023 GM Vapor Canister Purge Valve 12632174 | GM Parts Center Save Big On This OEM GM Vapor Canister Purge Valve, Part #12632174 for 2013-2023 GM. Wholesale Prices, …P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy HHR’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy HHR is the P0446 code.Steps to fix code P0446 & P0455. Check the Gas Cap. Inspect the condition of the gas cap. Check the seal and make sure it isn’t broken or dry-rotted. Test the gas cap and make sure it’s tightening securely. Check the Purge Valve. The purge valve is also a likely cause of codes P0446 and P0455.Cross reference GM parts numbers by entering the part number and selecting the make of the car on the Part Number Search page on GMPartsOnline.net. The site cross references the su...333 posts · Joined 2018. #3 · Aug 1, 2021. DTC P0446. Evaporative Emission (EVAP) Vent System Performance. Circuit/System Description. This DTC tests the evaporative emission (EVAP) system for a restricted or blocked EVAP vent path that would cause excess amounts of vacuum to be developed in the EVAP system.hatzie. 470 posts · Joined 2018. #2 · Mar 9, 2020. Code criteria; P0446 indicates that there is an improper voltage drop in the EVAP Vent Valve circuit. This can be caused by either too little or too much electrical resistance.Conclusion. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Avalanche’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Avalanche is the P0446 code.To fix the automobile fault code p0446, first, check the possible causes mentioned above. Then, visually inspect the wiring harness and connectors related to the issue. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. The estimated repair time for this fix is 1.0 hour.Conclusion. P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your Chevy Tahoe’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the Chevy Tahoe is the P0446 code.General Motors is launching a new line of energy management products, the next step in an EV offense aimed directly at Tesla. General Motors is launching a new line of energy produ...The most common fix for a P0446 code is to replace the EVAP vent control valve. This part is relatively inexpensive and easy to replace. However, if the problem is related to a damaged or clogged EVAP canister, the repair can be more costly. Sometimes, a faulty pressure sensor may also need to be replaced.Trouble code P0446 typically turns up in On-Board Diagnostic testing on account of an illuminated Check Engine Malfunction Indicator Lamp. This generic OBD-II code indicates that the evaporative vent valve in the …Check engine light code P0446. Suggested repair was to replace the canister purge valve. I did watch a few other videos which first recommended cleaning the ...#1 · Dec 21, 2014. Here's a series of steps that worked for me to eliminate the P0446 code on my 2006 Silverado 2500HD 6.0. This code most often refers to a blockage in the …

To fix the automobile fault code p0446, first, check the possible causes mentioned above. Then, visually inspect the wiring harness and connectors related to the issue. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. The estimated repair time for this fix is 1.0 hour.. Afmc family days

p0446 gm

Oct 6, 2023 · How to fix a Chevy / GMC P0446 engine Code: Evaporative Emission Control System Vent Control Circuit MalfunctionAmazon Link to Smoke Machine: https://amzn.to... 06MonteSS 2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, Custom paint-matched Bowtie emblems, Custom painted SS emblems, BMR strut tower brace, CAI - Cold Air …Aug 13, 2018 · P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your GMC Acadia’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the GMC Acadia is the P0446 code. P0446 Indicates that there is a fault in the evaporative emission control system. It often appears with other codes, such as P0420, P0441, or P0440. P0446: Evaporative Emission Control System Vent Control Circuit Malfunction. P0446 is normally not an immediate threat to the drive-ability of your vehicle.2021 GMC Canyon AT4, CCSB, 3.6 V6 Cayenne Red Tintcoat Removed air dam, GM tube side steps, GM skid plates, BAK Revolver X4S hard roll up tonneau cover. ... A P0446 code is not related to a purge valve solenoid. It is very frequently related to a vent valve solenoid, and also could be a faulty fuel tank pressure sensor.DTC P0446 Evaporative Emission Vent System PerformanceHow to fix P0446 EVAP Vent system performance code on a GM or Chevy truck. This is an updated bulletin...Disclaimer: Under no circumstances will proclaimliberty2000 be responsible or liable in any way for any content, including but not limited to, any errors or ...Here are a few ways to fix the code P0446. Replace the EVAP system hoses. Repair or Replace the fuel tank. Replace the charcoal canister. Use a proper or new gas cap. Replace faulty vent valves. JamesL Davis. James is a certified auto technician specializing in commercial vehicles.The fault code P0446 in the 2004 Chevy Silverado means that the computer has detected an electrical issue within the EVAP system vent control. The ECM sends a signal to the vent control valve to purge the gas vapors from the charcoal canister and directs them to the engine. When the P0446 fault happens, they vapors arent being …Síntomas del código OBD2 P0446 Chevrolet. Los signos de un código de falla P0446 Chevrolet normalmente son: Se enciende la luz de fallo de motor (Check Engine) Olor notable a combustible debido a la liberación de vapores de combustible. Pérdida de presión en el sistema de evaporación de emisiones. Dificultad para arrancar el vehículo.P0446 is a diagnostic trouble code (DTC) associated with a vehicle’s evaporative emissions control system. It signifies an issue in the vent control circuit in your GMC Canyon’s EVAP system, which prevents fuel vapor from being released into the atmosphere. A prevalent issue with the GMC Canyon is the P0446 code.Jul 21, 2022 · Labor: 1.0. To diagnose the P0446 Chevrolet code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour. .

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