Original record summaries, dates and identifiers for this model-year. Records 501–600 of 803, ordered newest first. Dated records on this page: Jun 30, 2020–Jan 26, 2021.
Read the applicability before drawing a conclusion.
This archive includes service bulletins, warranty notices, software instructions and other communications. Records may repeat or supersede earlier instructions. A model-year association is not proof that a document covers every engine, trim, VIN or reported symptom, or that a repair is free.
NHTSA download snapshot: Sep 28, 2026. These are communication associations for this vehicle, not unique defects. How records are joined and counted.
Jan 26, 2021Service Bulletin/Repair Instructions
21-002-21
NHTSA communication ID: 10215951
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice one or more of the following:Poor shift quality. Shift or gear hunting. A harsh 2-1 shift. Hesitation in up-shifts and/or down-shifts. Shudder and/or clunk when shifting into gear. The following software enhancements are available:Stored faults can only be cleared by a diagnostic scan tool, this software will allow the TCM to self clear. 2-1 coast down-shift improvements. 1-2/2-3/3-4/4-5 and 5-6 shift improvements.
Source components: ELECTRICAL SYSTEM · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may notice one or more of the following:Poor shift quality. Shift or gear hunting. A harsh 2-1 shift. Hesitation in up-shifts and/or down-shifts. Shudder and/or clunk when shifting into gear. The following software enhancements are available:Stored faults can only be cleared by a diagnostic scan tool, this software will allow the TCM to self clear. 2-1 coast down-shift improvements. 1-2/2-3/3-4/4-5 and 5-6 shift improvements.
Source components: ELECTRICAL SYSTEM · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may experience one or more of the following:Poor shift quality. Shift or gear hunting. The 6-4 and 5-3 shift can have a bump. Some 2-3, 3-4 or 4-5, shifts may flare when the transmission is cold. Coastdown bump. The following software enhancement is available:Stored faults can only be cleared by a diagnostic scan tool, this software will allow the TCM to self clear.
Source components: ELECTRICAL SYSTEM · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may experience one or more of the following:Poor shift quality. Shift or gear hunting. The 6-4 and 5-3 shift can have a bump. Some 2-3, 3-4 or 4-5, shifts may flare when the transmission is cold. Coastdown bump. The following software enhancement is available:Stored faults can only be cleared by a diagnostic scan tool, this software will allow the TCM to self clear.
Source components: ELECTRICAL SYSTEM · POWER TRAIN.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Customer may complain of a MIL lamp on. Upon further investigation there could be a fault code in the PCM for P1524 ? Oil Pressure Out of Range ? Camshaft Advance/Retard Disabled.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Customer may complain of a MIL lamp on. Upon further investigation there could be a fault code in the PCM for P1524 ? Oil Pressure Out of Range ? Camshaft Advance/Retard Disabled.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.
Source components: ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.
NHTSA source summary · Original PDF not reviewed by Recallfolio
HVAC Housing Service This bulletin informing the Technician about an HVAC housing redesign with components that need to be serviced together when servicing the HVAC housing. Customers may experience the following:Poor Air conditioning system performance (Slow or excess time to cool down). HVAC is slow to cool, left center instrument panel outlet is warmer than right side instrument panel outlets.
NHTSA source summary · Original PDF not reviewed by Recallfolio
HVAC Housing Service This bulletin informing the Technician about an HVAC housing redesign with components that need to be serviced together when servicing the HVAC housing. Customers may experience the following: Poor Air conditioning system performance (Slow or excess time to cool down). HVAC is slow to cool, left center instrument panel outlet is warmer than right side instrument panel outlets.
NHTSA source summary · Original PDF not reviewed by Recallfolio
HVAC Housing Service This bulletin informing the Technician about an HVAC housing redesign with components that need to be serviced together when servicing the HVAC housing. Customers may experience the following: Poor Air conditioning system performance (Slow or excess time to cool down). HVAC is slow to cool, left center instrument panel outlet is warmer than right side instrument panel outlets.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L Cummins Engine High Pressure Fuel Injection Pump Identification Differences This bulletin provides information regarding the identification differences in the high pressure fuel injection pumps between the new style Symetrical Cam design pump and the old syle Asymetrical Cam design used on the 6.7L Cummins in the 2019 and 2020 HD Trucks. The following information is intended to eliminate confusion and possible noise complaints shortly after pump replacement or ECMreprogramming.
Source components: BACK OVER PREVENTION · FUEL SYSTEM, GASOLINE · SERVICE BRAKES · STEERING.
NHTSA source summary · Original PDF not reviewed by Recallfolio
TRANSMISSION KIT, With Torque Converter If the Aisin DF2 transmission (2019/ 2020 MY) has experienced a complete clutch failure under normal usage, has fiber disc medium found in the oil pan, and lists P codes 1731, 0731, 0736, & 0733, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L Cummins Engine High Pressure Fuel Injection Pump Identification Differences This bulletin provides information regarding the identification differences in the high pressure fuel injection pumps between the new style Symetrical Cam design pump and the old syle Asymetrical Cam design used on the 6.7L Cummins in the 2019 and 2020 HD Trucks. The following information is intended to eliminate confusion and possible noise complaints shortly after pump replacement or ECMreprogramming.
NHTSA source summary · Original PDF not reviewed by Recallfolio
TRANSMISSION KIT, With Torque Converter If the Aisin DF2 transmission (2019/ 2020 MY) has experienced a complete clutch failure under normal usage, has fiber disc medium found in the oil pan, and lists P codes 1731, 0731, 0736, & 0733, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Drivetrain Control Module (DTCM) Update This bulletin involves reprogramming the DTCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set::If the customer has any concerns with the transfer case or if the tech performs any repairs on the transfer case, the software must be updated.C140E - Transfer Case Motor Blocked. If DTC C140E is present, follow normal diagnostic procedures before updating the DTCM.In addition the customer may describe the following:The ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC). Transfer case shift fork tabs broken during range shift. Noisy (clunking/ratcheting) transfer case range shifts. Failure to complete transfer case range shifts. The following software enhancement is available:This update will help reduce premature transfer case failure.
Source components: ELECTRICAL SYSTEM · ENGINE AND ENGINE COOLING · EXTERIOR LIGHTING.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Drivetrain Control Module (DTCM) Update This bulletin involves reprogramming the DTCM with the latest available software. The customer may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set::If the customer has any concerns with the transfer case or if the tech performs any repairs on the transfer case, the software must be updated.C140E - Transfer Case Motor Blocked. If DTC C140E is present, follow normal diagnostic procedures before updating the DTCM.In addition the customer may describe the following:The ?Service 4WD? message/fault is displayed in the Instrument Panel Cluster (IPC). Transfer case shift fork tabs broken during range shift. Noisy (clunking/ratcheting) transfer case range shifts. Failure to complete transfer case range shifts. The following software enhancement is available:This update will help reduce premature transfer case failure.
Source components: ELECTRICAL SYSTEM · EQUIPMENT · POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE).
NHTSA source summary · Original PDF not reviewed by Recallfolio
Squeak, Rattle, Or Metallic Tapping Sound From Under The Instrument Panel This bulletin involves Inspecting and replacing the AMP bracket fastener. The customer may describe one or both of the following:A bolt may have been found in the driver foot well. A squeak, rattle or metallic tapping sound from under the instrumentpanel (this is due to amp bracket being loose and hitting against the IP Cross Car Beam). They may mention noise worsens during whentraveling on rough/bumpy roads.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Engine Control Module/Powertrain Control Module (ECM/PCM) with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following DTCs have been set:P1D73-00 - AGS Performance. P0626 - Generator Field Control Circuit High. P218F - Reductant No Flow Detected. P2002 - Diesel Particulate Filter Efficiency Below Threshold. P24A5 - EGR Cooler Bypass Bank 1 Control Stuck. P0191 - Fuel Rail Pressure Sensor Circuit Performance. P0461 - Fuel Level Sensor 1 Performance. P0401 - EGR System Performance. P20EE - NOx Catalyst Efficiency Below Threshold. P061A - Level 2 Torque Performance. P061B - Internal Control Module Torque Calculation Performance. P061E - Internal Control Module Brake Signal Performance. P062C - Etc Level 2 MPH Performance. P0106 - Manifold Absolute Pressure Sensor Performance (In extreme cold ambient temperatures). P0116 - Engine Coolant Temperature Sensor Performance. P0420 - Catalyst System Efficiency Bank 1. P1507 - Crankcase Filter Restriction. P20E8 - (Diesel Exhaust Fluid) Reductant Pressure Too Low. P203F - (Diesel Exhaust Fluid) Reductant Level Too Low. P226C - Turbocharger Boost Control ?A? Slow Response (In extreme cold ambient temperatures). P2579 - Turbocharger Speed Sensor Circuit. U0101 - Lost Communication with TCM. U02A3 - Lost of Communication with PM Sensor. U3017 - Control Module Timer/Clock Performance. The customer may also notice one or more of the following:Oil life monitor resets after PCM flash. Diesel Exhaust Fluid (DEF) level gauge inaccurate. Message ?Regen in progress will take up to 70 Minutes? remains in Electronic Vehicle Information Center (EVIC) when aborting manual regeneration process. Excessive DEF consumption. Poor idle at times when engaging cab heat feature.
Source components: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM).
NHTSA source summary · Original PDF not reviewed by Recallfolio
(Revision A) (CEL) Check Engine Light Is On, Vehicle Speed May Be Limited (2nd Gear Limp Mode), Shifting May Be Erratic, Cluster Message To Service Transmission
NHTSA source summary · Original PDF not reviewed by Recallfolio
UAX, UCX, UAV and UCV Radio Over the Air Software Version Updates This bulletin provides information regarding the latest Flash Over The Air (FOTA) update and provides the service technician an overview of the steps a customer will need to take to complete the update. The radio software will be updated to 34.2. Customers may experience one or more of the following:Uconnect App inoperative(DT Vehicles Only). Voice Recognition (VR) inoperative(DT Vehicles Only). Radio resets (DT Vehicles Only). Radio locks up, freezes or resets. Bluetooth device is slow to pair, or does not pair. GPS unable to load and find locations. Loss of saved radio presets. Display screen is back with no backlighting. No audio output coming from the radio. Cannot control audio volume. Rear view camera display will not turn off.
NHTSA source summary · Original PDF not reviewed by Recallfolio
USB PORT, Media Hub For Android Auto and Apple Carplay issues, do not replace this part. Android Auto and Apple Carplay applications may not operate with the vehicle if an aftermarket cable is being used. Verify the functionality of these applications using an OEM Apple Lightning cable or an OEM provided USB cable for Android phones before performing any additional troubleshooting. For questions regarding Android Auto or Apply Carplay functionality, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
NHTSA source summary · Original PDF not reviewed by Recallfolio
USB PORT, Media Hub For Android Auto and Apple Carplay issues, do not replace this part. Android Auto and Apple Carplay applications may not operate with the vehicle if an aftermarket cable is being used. Verify the functionality of these applications using an OEM Apple Lightning cable or an OEM provided USB cable for Android phones before performing any additional troubleshooting. For questions regarding Android Auto or Apply Carplay functionality, please contact FCA Redacted Content. If no response in 15 minutes, proceed with repair.
NHTSA source summary · Original PDF not reviewed by Recallfolio
PUMP, Fuel Injection This part requires a unique calibration to be programmed into the Engine Control Module (ECM). Failure to program the ECM with the correct calibration after installation of this pump will create an undesireable noise characteristic from the pump. Please be sure to follow all normally published Service Bulletins, and Service Information for the latest installation instructions, and programming steps.
NHTSA source summary · Original PDF not reviewed by Recallfolio
PUMP, Fuel Injection This part requires a unique calibration to be programmed into the Engine Control Module (ECM). Failure to program the ECM with the correct calibration after installation of this pump will create an undesireable noise characteristic from the pump. Please be sure to follow all normally published Service Bulletins, and Service Information for the latest installation instructions, and programming steps.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L Cummins Engine High Pressure Fuel Injection Pump Identification Differences This bulletin provides information regarding the identification differences in the high pressure fuel injection pumps between the new style Symetrical Cam design pump and the old syle Asymetrical Cam design used on the 6.7L Cummins in the 2019 and 2020 HD Trucks. The following information is intended to eliminate confusion and possible noise complaints shortly after pump replacement or ECM reprogramming.
Source components: ELECTRICAL SYSTEM · FUEL SYSTEM, GASOLINE.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Air Suspension Control Module (ASCM) Updates This bulletin involves reprogramming the ASCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following DTCs have been set: U0132 - Loss of Communication with Air Suspension Control Module. C15E1-97 - Left Rear Air Spring Intake - Component or System Operation Obstructedor Blocked. C220C-48 - Active Suspension Module Internal-Supervision Software Failure(2019 MY Only). C211B-92 - Ignition Run/Start Input-Performance Or Incorrect Operation(2019 MY Only). C156C-7A - Ride Height System Air Leak-Fluid Leak Or Seal Failure(2019 MY Only). In addition the customer may describe: Air spring deflated or ruptured. Right/left rear suspensions sits lower than the other side. During key ?On? or while driving, the ?service air suspension?light illuminates. Chime and "Service Air Suspension Immediately" message appeared in the clusterfor 5 seconds. Air suspension system is inoperable. Excessive operation or noise from air suspension system when vehicle is stationary(2019 MY Only). "Air Suspension Disabled" message when attempting Bed Lowering Mode (BLM)(2019 MY Only). Excessive compressor valve cycling following a cold start(2019 MY with Diesel engine only). Erroneous "Bed Low Achieved" message through the Instrument Panel Cluster (IPC), when requesting lowering, even though the truck didn'tphysically lower. Ride height changes/valve actuations without operator request on rough roads.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L Cummins Engine High Pressure Fuel Injection Pump Identification Differences This bulletin provides information regarding the identification differences in the high pressure fuel injection pumps between the new style Symetrical Cam design pump and the old syle Asymetrical Cam design used on the 6.7L Cummins in the 2019 and 2020 HD Trucks. The following information is intended to eliminate confusion and possible noise complaints shortly after pump replacement or ECM reprogramming.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Flash: Air Suspension Control Module (ASCM) Updates This bulletin involves reprogramming the ASCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or moreof the following DTCs have been set: U0132 - Loss of Communication with Air Suspension Control Module. C15E1-97 - Left Rear Air Spring Intake - Component or System Operation Obstructedor Blocked. C220C-48 - Active Suspension Module Internal-Supervision Software Failure(2019 MY Only). C211B-92 - Ignition Run/Start Input-Performance Or Incorrect Operation(2019 MY Only). C156C-7A - Ride Height System Air Leak-Fluid Leak Or Seal Failure(2019 MY Only). In addition the customer may describe: Air spring deflated or ruptured. Right/left rear suspensions sits lower than the other side. During key ?On? or while driving, the ?service air suspension?light illuminates. Chime and "Service Air Suspension Immediately" message appeared in the clusterfor 5 seconds. Air suspension system is inoperable. Excessive operation or noise from air suspension system when vehicle is stationary(2019 MY Only). "Air Suspension Disabled" message when attempting Bed Lowering Mode (BLM)(2019 MY Only). Excessive compressor valve cycling following a cold start(2019 MY with Diesel engine only). Erroneous "Bed Low Achieved" message through the Instrument Panel Cluster (IPC), when requesting lowering, even though the truck didn'tphysically lower. Ride height changes/valve actuations without operator request on rough roads.
Source components: ELECTRICAL SYSTEM · SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Loose Wiper Arms This bulletin involves checking and or re-torquing the windshield wiper arm nuts. The customer may describe one or both of the windshield wiper arm are loose and may stop moving at times.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Loose Wiper Arms This bulletin involves checking and or re-torquing the windshield wiper arm nuts. The customer may describe one or both of the windshield wiper arm are loose and may stop moving at times.
NHTSA source summary · Original PDF not reviewed by Recallfolio
Loose Wiper Arms This bulletin involves checking and or re-torquing the windshield wiper arm nuts. The customer may describe one or both of the windshield wiper arm are loose and may stop moving at times.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L New Oil Usage Information This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins used in the 2019 and newer HD Trucks. The following information is intended to eliminate confusion.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L New Oil Usage Information This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins used in the 2019 and newer HD Trucks. The following information is intended to eliminate confusion.
Source components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL · UNKNOWN OR OTHER.
NHTSA source summary · Original PDF not reviewed by Recallfolio
6.7L New Oil Usage Information This bulletin provides information regarding the correct oil grade to use on the 6.7L Cummins used in the 2019 and newer HD Trucks. The following information is intended to eliminate confusion.