Gm dtc c0472

This diagnostic trouble code (DTC) is a generic powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may be slightly different depending on the model. The DTC P0452 is relates to an emission system malfunction. Your PCM or powertrain management computer ...

Gm dtc c0472. Equip your facility with MDI2 to help properly diagnose GM vehicles. MDI2 is a GM Global Diagnostic Interface tool for both current and future GM vehicles that operates with Techline Connect to communicate with a GM vehicle. MDI2 Features Include: Wireless connection. High-speed USB 2.0 connection.

This article will therefore deal with code P0420 as it applies specifically to GM vehicles. OBD II fault code P0420 is a generic trouble code that is defined as “Catalytic converter system, bank 1 – efficiency below threshold” and is set when the PCM (Powertrain Control Module) detects a condition in which the efficiency of the catalytic ...

C0575 04. Definition: Left Front Actuator Circuit - Open Circuit. Description: Battery voltage is between 9-16 volts. Ignition ON for 30 seconds. Cause: The damper coil or the circuits to the coil are shorted to ground, shorted to voltage, or open for 3 consecutive ignition ON cycles. The vehicle must be driven over 4.8 km/h (3 mph).GM’s rear steer fail-safe is controlled by 70 belleville washers and stacked wave disc springs that pulls the rear wheels straight when kicked into 2WS mode. If this is binding it can set erroneous trouble codes leading one to chase phantom electrical issues. ... DTC C0455. DTC C0472 / C0473. DTC C0522. DTC C0527. DTC C0532. DTC C0533. DTC ...Abs sistem code c0265. ABS light on, DTCs set. Some 1999-2004 midsize and full-size GM pickups and SUV's (full list below) may illuminate the ABS light and store DTC C0201 or C0265 in the ABS computer. In addition, code U1041 may set in other modules or you may encounter lost communication between your scanner and the ABS …Jun 24, 2019 · In this video i show the steps and procedures necessary to replace the steering wheel position sensor on a GM truck or SUV. The truck I’m working on in this ... 2467 posts · Joined 2006. #1 · Oct 12, 2009. These are the GM specific OBD1 DTC codes: GM common codes for OBD1 (for vehicles made before 1995) 12 System normal. 13 oxygen sensor circuit open. 14 coolant sensor high resistance or shorted. 15 coolant sensor circuit low or open. 16 direct ignition system (DIS) fault in circuit.For More Info visit us at: http://1aau.to/h/cub/Do you have a check engine on with the code P0496? This code may appear on any vehicle, but it is most common...A low voltage condition prevents the system from operating properly. If low voltage is detected by the EBCM or PTOM, then DTC C0899 sets. Conditions for Running the DTC. The ignition is ON. Conditions for Setting the DTC. The ignition voltage available to the EBCM or PTOM is less than 9 volts for 100 msec.

Your powertrain control module (PCM) might store a P0472 code if it receives a mismatched signal between the exhaust pressure sensor and the intake manifold pressure or ambient air pressure. This trouble code might have some similarities with a P0471 code. The main difference is that the P0472 code is strictly an electrical fault, while a P0471 ...Nov 18, 2020 ... Add a comment... 8:52. Go to channel · Gm Steering Wheel Position Sensor Replacement (Tips and Tricks). Aaron Hines•515K views · 4:03. Go to ...For More Info visit us at: http://1aau.to/h/cub/Do you have a check engine on with the code P0496? This code may appear on any vehicle, but it is most common...B0022 04 GMC Diagnostic Trouble Code (DTC) Definition, Causes and Diagnosis ... GMC DTC B0022 04 Make: GMC Code: B0022 04 Definition: Passenger Seat Belt Retractor Pretensioner Deployment Loop Open Circuit Description: Ignition voltage is between 9-16 V. Cause: B0014 04, B0015 04, B0016 04, B0019 04, B0020 04, B0021 04, B0022 04, …C0472 - Rear Wheel Steering DTC C0472 Circuit Description The steering wheel position sensor (SWPS) provides one analog signal and 3 digital signals. The digital signals, Phase A, Phase B and marker pulse, are direct inputs to the rear wheel steering control module.Jun 24, 2019 · In this video i show the steps and procedures necessary to replace the steering wheel position sensor on a GM truck or SUV. The truck I’m working on in this ... Accessing GM OBD1 Trouble Codes. Turn ignition switch to OFF position. Locate Data Link Connector (DLC), see image below. Jumper the A&B terminals (a paper clip or a jumper wire work ok) Turn Ignition switch to ON position. Count the flashes on the “ CHECK ENGINE ” or “ SERVICE ENGINE ” light. FLASH, pause, FLASH, FLASH = code 12.

GM revealed Wednesday a new electric architecture that will be the foundation of the automaker’s future EV plans and support a wide range of products across its brands, including c...C0472 DTC C0472 or C0473 Circuit Description The Steering Wheel Position Sensor (SWPS) provides one analog signal and 3 digital signals. The digital signals, Phase A, …Jan 27, 2021 · This article will therefore deal with code P0171 as it applies specifically to GM vehicles. OBD II fault code P0171 is a generic trouble code that is defined as “System too lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an air/fuel mixture that is too lean on bank 1. Note that in the context of this code ... C1783 - ICCS2 DL Left Output Short Circuit to GND. C1784 - ICCS2 DL Right Output Short Circuit to Bat. C1785 - ICCS2 DL Right Output Short Circuit to GND. C1786 - Damper Control Relay Fault. C1787 - Damper Control Relay Short to GND. C1788 - Damper Control Relay Short to Bat. Listing of all generic OBD-II OBD2 C Chassis Trouble Codes.GMC. Code: C0242 71. Definition: Engine Control Module (ECM) Indicated TCS Malfunction Invalid Serial Data Received. Description: Engine running. Cause: The ECM detects a fault that prevents it from performing a traction control function and sends a serial data message to the EBCM indicating that torque reduction is not allowed.Aug 21, 2005 ... This section is about the GM OBD-II DTC Code List. ... C0472. Steering Hand wheel Speed Sensor ... DTC. Diagnostic Trouble Codes. DTM diagnostic ...

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GM, which has received $15.4 billion in federal aid, faces a June 1 government deadline to complete its restructuring plan. If it can't finish in time, the …Mar 18, 2019 · 1. The steering wheel rotation sensor signal circuit voltage is less than 0.2 volts. 2. The above condition is met for 1 second. Action Taken When the DTC Sets. The EVO/Passlock module does not send any current to the PS solenoid actuator. This causes retraction of the PS solenoid actuator. Jun 20, 2023 ... Descubre todo sobre el código de avería P0472! En este video, exploraremos la descripción, los síntomas, las causas y las soluciones para ... When testing any circuit for open or continuity/ resistance, it is imperative that all related terminal pin fit and tension be checked when the test steps require disconnection of the connector or component, prior to any component replacement. Always use the recommended terminal test tool during these tests. We would like to show you a description here but the site won’t allow us. Medicine Matters Sharing successes, challenges and daily happenings in the Department of Medicine Nadia Hansel, MD, MPH, is the interim director of the Department of Medicine in th...

SEOCONTENT-START. Bulletin No.: PIT5674B Published date: 04/12/2021 Preliminary Information PIT5674B DTC C116C and/or C116B After Installation of GM Accessory Performance Brake Pads Models Brand: Chevrolet GMC Model: Silverado 1500 (New Model) Sierra 1500 (New Model) Model Years: 2019 – 2021 2019 – 2021 VIN: from to All All All All Engine: All All Transmissions: All All Involved Region or ...C0473 DTC C0472 or C0473 Rear Wheel Steering Control Module C0522 DTC C0522 Rear Wheel Steering Control Module C0527 DTC C0527 Rear Wheel Steering Control …2003 Chevrolet Chevy Suburban - 4WD Print DTC Diagnostic Procedure Module(s) B3593 DTC B3593 Rear Wheel Steering Control Module ... C0472 DTC C0472 or C0473 Rear Wheel Steering Control ModuleThe P0102 code is set when the Powertrain Control Module ( PCM) detects that the mass air flow (MAF) sensor frequency signal isn’t performing in the normal expected range set by the manufacturer. This trouble code indicates that there’s a low condition within the mass air flow sensor or circuit. This diagnostic trouble code (DTC) …The code P0672 tells you that something in the glow plug circuit is faulty causing the glow plug on cylinder #2 to fail to heat up. The entire circuit must be checked to locate the fault. Note: If a P0670 trouble code is present along with this DTC, carry out P0670 diagnosis before diagnosing this code. We would like to show you a description here but the site won’t allow us. The video focuses on the basic GMC specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight into prog...It’s official: a fully electric Chevy Corvette is coming — with new battery technology to boost its range, acceleration and efficiency. When it arrives, the battery-electric sports...The DTC will be set when the ECM receives a serial data message from the Brake System Control Module indicating that DTC has been set in the module. P25A2 GMC Code - Brake System Control Module Requested MIL Illumination. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors.I have a 2003 GMC Yukon XL1500 SLT 5.3LHaving electrical issues: Biggest one being a Dead cluster Lights on door lock fixtures and 4wd control will flicker As well as radio and HVAC control.I have tried replacing ignition switch and switching BCM with used BCM with updated part numberI have high resistance on ground wires going to cluster connector with key on, as well as high resistance to ...

The automobile fault code u0422 has an estimated repair time of 1.0 hour. The cost of fixing this fault code varies depending on the auto repair shop, but it is common for most shops to charge between $75 and $150 per hour. Therefore, the total cost of fixing the u0422 fault code will be between $75 and $150. These factors, including the repair ...

Messages. 37. Location. Lexington, SC. Sep 24, 2009. #1. OK guys. I know that this has been discussed up one side and down the other, but I have tried all that I have read about and I still am getting the "P0442 (M) Evap Leak Monitor Medium (0.040) Leak Detected A small leak has been detected in the evaporative system" code in my '02.DTC C0472. C0472. DTC C0472, sometimes indicated as C047200 is an OBD diagnostic trouble code indicating a generic fault with the vehicle chassis. DTC Trouble Code ...The video focuses on the basic Chevrolet specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight int...Diagnostic trouble code (DTC) P0131 stands for “O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1).”. The code is logged once the PCM detects that the voltage of the affected sensor is below a specified threshold. The code can also be logged once the PCM senses that the air-fuel ratio stayed in a lean-biased mode for too long.Jul 23, 2018 · C. Chev7.4 Discussion starter. 11 posts · Joined 2018. #1 · Jul 23, 2018. Thanks for the add, I have a 1998 gmc k2500 7.4l 454 distributor has no spark, I have spark from coil but not from distributor, and I have replaced the coil, control module, cap,rotor,and pickup coil, and still have no spark from the distributorthanks. Like. The GM MDI is the Global Diagnostic tool for future vehicles starting with Global A vehicles. The GM MDI was introduced in the fall of 2007 for Pass-Thru programming and offers faster programming speed. It can be used to perform Pass-Thru programming on all vehicles built since 1996 and into the future.C0379 01. Definition: Front Axle System Short to Battery. Description: Ignition ON. System voltage 10.5-18 V. Cause: The TCCM monitors the front axle switch signal circuit and the front axle actuator control circuit for unexpected voltages. The DTC sets if the TCCM detects a high voltage when a low voltage is expected, or a low voltage when a ...

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The GM Family First Program is a discount program for General Motors employees and their families. The discount is applicable toward the purchase of Buick, Chevrolet, Cadillac or G...The P0497 code may be triggered due to different reasons. The following are the most common causes of the P0497 code: A clogged EVAP charcoal canister. Blocked fuel tubes. Vacuum leaks. A faulty fuel pressure sensor. Bad EVAP canister vent valve. Damaged or leaked gas cap. An issue with the purge valve.DTC B0174 Output Air Temperature Sensor #1 (Upper; Single or LH) Circuit Range/Performance I. DTC B0179 Output Air Temperature Sensor #2 (Lower; Single or LH) Circuit Range/Performance I. DTC B0184 Solar Load Sensor #1 CKT Range. DTC B0229 Air Flow Control #7 (Recirc) Feedback Circuit Range/Performance I.General Motors (GM) has always been at the forefront of automotive safety, constantly innovating to provide drivers and passengers with the highest level of protection on the road....Equip your facility with MDI2 to help properly diagnose GM vehicles. MDI2 is a GM Global Diagnostic Interface tool for both current and future GM vehicles that operates with Techline Connect to communicate with a GM vehicle. MDI2 Features Include: Wireless connection. High-speed USB 2.0 connection. Recent Posts. 2014 F150 Firing Order and engine layout; 2013 F150 Firing Order and engine layout; 2012 F150 Firing Order and engine layout; 2014 F150 Fuse Diagram: Exploring the Fuse Boxes Open TIS on the computer used to program the vehicle. Select and start SPS. Select Settings. Select the Warranty Claim Code tab. The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is retrievable, dealers should resubmit the transaction making sure to include the code in the SPS ...To diagnose a P1400 DTC code, a technician would: Scan for codes in the ECM and look at the freeze frame data; Examine the air intake system. Look for signs of damage, modifications, and restrictions in the system. Check the air filter element for dirt or signs of wear and damage. Check the crankcase ventilation system for proper operation. ….

The numbers. Investors looked past the one-time charges that dragged down the headline numbers, and the underlying business looked strong. If you want to be a stickler for account...Jan 18, 2010 · Action Taken When the DTC Sets. The SDM sets a diagnostic trouble code. The SDM turns ON the AIR BAG warning lamp. Conditions for Clearing the DTC. Current DTC The voltage difference between DRIVER SIDE HIGH terminal 2 and DRIVER SIDE LOW terminal 3 is less than 400 millivolts for 500 milliseconds. History DTC; You issue a scan tool CLEAR CODES ... In each power steering system type, the pump delivers fluid to the control valve. The control valve opens a pressurized flow to and from the hydraulic cylinder and responds directly to input from the pitman arm or steering shaft. The actuation of the control valve is based on input geared to slower vehicle speeds where assist is needed the most.This article will therefore deal with code P0171 as it applies specifically to GM vehicles. OBD II fault code P0171 is a generic trouble code that is defined as “System too lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an air/fuel mixture that is too lean on bank 1. Note that in the context of this code ...990 posts · Joined 2011. #3 · Mar 20, 2013. Bump. Sent from my ADR6325 using AutoGuide.Com Free App. Trey. 01 gmc sierra slt crew cab 4x4 6.6 dmax, efi live by Idaho Rob, 315/75/16 Goodyear Duratracs on 16" Moto Metals, 3" body lift, 5" Diamond Eye straight pipe with 7" tip, Z Series Autometer Boost and Pyro, 6k Highs 8k Lows and 3K …Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1041 is set. U1041 Chevrolet Code - Lost Communications With Electronic Brake Control Module. Home GMCB2470 04 GMC DTC B2470 04 Make: GMC Code: B2470 04 Definition: Cellular Phone Antenna Circuit Malfunction Open Circuit Description: Ignition in the RUN or ACC position. System voltage is between 9.5 volts and 15.5 volts. The above conditions are present for greater than 1 second. Cause: The VCIM does not detect the presence of a ... Your powertrain control module (PCM) might store a P0472 code if it receives a mismatched signal between the exhaust pressure sensor and the intake manifold pressure or ambient air pressure. This trouble code might have some similarities with a P0471 code. The main difference is that the P0472 code is strictly an electrical fault, while a P0471 ...Code: C0242 00. Definition: Powertrain Control Module Indicated Traction Control Malfunction. Description: Ignition ON. The ignition voltage is greater than 10 volts. Cause: The ECM diagnoses a condition preventing the engine control portion of the traction control function and sends a serial data message to the EBCM indicating that torque ...The code P0672 tells you that something in the glow plug circuit is faulty causing the glow plug on cylinder #2 to fail to heat up. The entire circuit must be checked to locate the fault. Note: If a P0670 trouble code is present along with this DTC, carry out P0670 diagnosis before diagnosing this code. Gm dtc c0472, Jul 23, 2018 · C. Chev7.4 Discussion starter. 11 posts · Joined 2018. #1 · Jul 23, 2018. Thanks for the add, I have a 1998 gmc k2500 7.4l 454 distributor has no spark, I have spark from coil but not from distributor, and I have replaced the coil, control module, cap,rotor,and pickup coil, and still have no spark from the distributorthanks. Like. , 39 posts · Joined 2012. #1 · Mar 8, 2013. I have recently noticed that my check engine light has come in my 2007 duramax. I have a Hypertech tuner, which I used to diagnose the DTC and it reports p0402-exhaust gas recirculation flow excessive detected. I used the hypertech to clear the code and the truck has never acted as anything is wrong ..., This article will therefore deal with code P0171 as it applies specifically to GM vehicles. OBD II fault code P0171 is a generic trouble code that is defined as “System too lean – Bank 1” and is set when the PCM (Powertrain Control Module) detects an air/fuel mixture that is too lean on bank 1. Note that in the context of this code ..., It seems odd to me that there appear to be several DTC codes that all point to the same system. itsstopher. PM 2018. PM 2017. PM 2016. PM 2015. PM 2014. PM 2013. PM 2012. SM 2011. SM 2010. SM 2009. SM 2008. SM 2007. SM 2006. SM 2005. SM 2004 ... There is that dang list of GM "J tools". Ever since my first GM product (a '71 Chevy …, Conditions for Running the DTC Vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds. Conditions for Setting the DTC The body control module detects a steering handwheel position/speed sensor out-of-range condition when the vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds. Action Taken When the DTC Sets, Detailed repair manual for the 2004 GMC Truck Sierra 1500 4WD V8-5.3L VIN T. Operation CHARM : Car repair manuals for everyone. Home >> GMC Truck >> 2004 >> Sierra 1500 4WD V8-5.3L VIN T >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C0472 , Home GMCB2470 04 GMC DTC B2470 04 Make: GMC Code: B2470 04 Definition: Cellular Phone Antenna Circuit Malfunction Open Circuit Description: Ignition in the RUN or ACC position. System voltage is between 9.5 volts and 15.5 volts. The above conditions are present for greater than 1 second. Cause: The VCIM does not detect the presence of a ... , DTC C0472, sometimes indicated as C047200 is an OBD diagnostic trouble code indicating a generic fault with the vehicle chassis., In this video we will be going thru a crank no start situation with a U1000 DTC and the Security lamp lit on the instrument cluster. This is a very specific... , C0472 DTC C0472 CIRCUIT DESCRIPTION The steering wheel position sensor is a 0-5 volt device which is used to sense steering wheel position and turning speed. The valid signal voltage range of the sensor is 0.35-4.75 volts. The signal voltage will increase or decrease within the valid voltage range as the steering wheel is turned., The GM Family First Program is a discount program for General Motors employees and their families. The discount is applicable toward the purchase of Buick, Chevrolet, Cadillac or G..., SOURCE: gmc yukon 2001 dtc code po404. P0404 is Exhaust Gas Recirculation range/performance. This is usually due to the EGR valve moving slower then it should (sticking). ... DTC C0472 or C0473 DTC C0550 DTC C0558 Read full answer. Dec 04, 2017 • 2003 Cadillac Escalade. 1 helpful. 1 answer. GMC P2135 throttle sensor code., Conditions for Running the DTC Vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds. Conditions for Setting the DTC The body control module detects a steering handwheel position/speed sensor out-of-range condition when the vehicle speed is greater than 80.4 km/h (50 mph) for at least 10 seconds. Action Taken When the DTC Sets, Ford Mode 6 misfire diagnostics and Ford coil on plug (COP) testing tricks included. Tricks include two test lead hook-ups to diagnose how many coils and which cylinder coils are bad, even before the customer knows! Download Now – $15. Get the code B2960 (key code incorrect but valid) and a U1000 code., This article will therefore deal with code P0420 as it applies specifically to GM vehicles. OBD II fault code P0420 is a generic trouble code that is defined as “Catalytic converter system, bank 1 – efficiency below threshold” and is set when the PCM (Powertrain Control Module) detects a condition in which the efficiency of the catalytic ..., The code P0300 indicates there are repetitive misfires on one or more cylinders in your car. You will often find this code together with another code of the specific cylinder the misfire occurred on. If the last digit of the trouble code is not zero, e.g., if the generated code is P0302, the number 2 indicates that cylinder number 2 has a misfire., How to Read OBD1 Codes at Home. The reading method without a diagnostic tool is to short the circuit of pin A and pin B. The car will then enter the diagnostic mode and flash the “ check engine Light ” several times, and we should count the flashes to figure out the diagnostic codes. How to read the OBD1 codes:, The Bolt will take on Tesla's Model 3. General Motors will on Monday unveil a long-awaited electric car with a 200-mile range per charge and roughly $30,000 pricetag, creating an i..., WASHINGTON, June 27, 2020 /PRNewswire/ -- The U.S. Army Contracting Command–Detroit Arsenal announced today that GM Defense LLC, a subsidiary of G... WASHINGTON, June 27, 2020 /PRN..., SOURCE: gmc yukon 2001 dtc code po404 P0404 is Exhaust Gas Recirculation range/performance. This is usually due to the EGR valve moving slower then it should (sticking). You can try to clean it (the rod will need to move freely and don't spin the rod, it will damage the valve, just move it up and down) but if it doesn't work out then …, The video focuses on the basic Chevrolet specific diagnostic error code.Contents:0:21 Basic DTC analysis according to OBD2 protocol standard.1:48 Insight int..., 95 GMC 2500 diesel manual trans. check engine light comes on at 60 MPH. goes off if let up on throttle. comes back on soon. code is 78 not shown on code list. Previous code 72 speed sensor. Replaced sensor and no change. any suggestions/, GM’s rear steer fail-safe is controlled by 70 belleville washers and stacked wave disc springs that pulls the rear wheels straight when kicked into 2WS mode. If this is binding it can set erroneous trouble codes leading one to chase phantom electrical issues. ... DTC C0455. DTC C0472 / C0473. DTC C0522. DTC C0527. DTC C0532. DTC C0533. DTC ..., A condition that sets a BCM DTC C0472 or C0473 is present. The marker pulse signal was low at less than +/-10 degrees of steering wheel angle and the steering wheel angle has …, Conditions for Running the DTC The ignition is ON. Conditions for Setting the DTC The BCM detects that the analog steering signal circuit is an open, shorted to ground or shorted to voltage. Action Taken When the DTC Sets <- Back Forward -> Document ID# 885596 2003 Chevrolet Chevy Suburban - 4WD Print Service Information Page 1 of 4, Ford Mode 6 misfire diagnostics and Ford coil on plug (COP) testing tricks included. Tricks include two test lead hook-ups to diagnose how many coils and which cylinder coils are bad, even before the customer knows! Download Now – $15. Get the code B2960 (key code incorrect but valid) and a U1000 code., Detailed repair manual for the 2004 Chevy Truck Silverado 1500 4WD V8-5.3L VIN T. Operation CHARM: ... >> Testing and Inspection >> C Code Charts >> C0473. C0473 DTC C0472 or C0473 Test 1-11: Test 12-15: Circuit Description The steering wheel position sensor (SWPS) provides one analog signal and 3 digital signals. The digital signals, …, Jun 23, 2010 · Remove the four knee bolster retaining nuts. Loosen the screw holding connector C201 together and separate. C201 is the connector for the steering column wires to the IP wiring harness on the left side of the column about half way down. It is a 48-way connector with a center retaining screw. , C0472 is low voltage from the steering wheel speed sensor so it wouldn't stop the engine from running that must be a separate problem that you should start a new question for. Here is how to fix the C0472 …, The antilock brake system (ABS) is controlled by its own computer. When it senses a problem, the ABS module on the dashboard will light up. When the problem is fixed, the module wi..., 2003 Chevrolet Chevy Suburban - 4WD Print DTC Diagnostic Procedure Module(s) B3593 DTC B3593 Rear Wheel Steering Control Module ... C0472 DTC C0472 or C0473 Rear Wheel Steering Control Module, The first GM PassLock antitheft system was introduced in the mid-1990s. It prevents the car from starting with the wrong ignition key. Problems do occur with the PassLock system wh..., Labor: 1.0. The cost to diagnose the C0503 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.