NHTSA ID Number: 10222274
Manufacturer Communication Number: N222359341
Summary
Population expansion for emission recall. Certain vehicles with a 6.6L diesel engine. In cold ambient temperatures when Diesel Emissions Fluid (DEF) in the DEF tank is frozen, the DEF tank pump may be activated before DEF has been sufficiently thawed by the heater. If this condition occurs, the control system may detect no DEF flow through the pump, set a Diagnostic Trouble Code (DTC), disable DEF dosing for the remainder of the drive cycle and alert the driver of an impending reduction in maximum vehicle speed. Dealers are to reprogram the ECM.
3 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
CHEVROLET | SILVERADO 4500HD | 2022 |
| CHEVROLET | SILVERADO 5500HD | 2022 |
| CHEVROLET | SILVERADO 6500HD | 2022 |
1 Associated Document
Manufacturer Communications
N222359341
Reprogramming
GM Diagnostic/Programming (TIS2Web)
Approved J2534 Device with TIS2WEB can reprogram 1996 and later All GM Modules.
To obtain the latest electronic controller calibration information for your vehicle, go to https://tis2web.service.gm.com/tis2web and enter the vehicle's 17 character Vehicle Identification Number (VIN) and select 'Get CAL ID’.
You can then compare the latest part number with the actual number installed on the vehicle to determine if a reprogram is needed.
The Service Programming System (SPS) application is part of the TIS2Web system. To program an ECU, the SPS application must communicate with the vehicle control modules using the proper J2534 programming interface tool.
The Tech 2 supports model years 1996 and beyond. With the addition of the CAN Diagnostic Interface (CANdi) module, Tech 2 is fully backward compatible with current Tech 2 functionality and operates transparently when diagnosing non-CAN-equipped vehicles.
Servicing the next generation Global A vehicles will require the diagnostic software, GDS2, Global Diagnostic System 2 running on a local PC device while the MDI is connected to the vehicle. 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. Click here to view a list of GDS supported vehicles.
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GLOBAL SAFETY FIELD INVESTIGATIONS DCS6294 URGENT – DISTRIBUTE IMMEDIATELY Date: September 27, 2022 Subject: N222359341 – Product Emission Recall DEF Pump May Activate Before Frozen DEF is Sufficiently Thawed Population Expansion Models: 2022 Chevrolet Silverado 4500HD/500HD/6500HD Equipped with 6.6L, 8-cylinder Diesel Engine (RPO L5D) To: All General Motors Medium Duty Dealers On April 5, 2022, General Motors released Product Emission Recall N222359341. We are adding 3,242 VINs to the involved vehicle population. Global Warranty Management (GWM) The Required Field Action section on the Investigate Vehicle History (IVH) screen will be updated September 27, 2022. A list of involved vehicles in dealer new inventory is attached to this message. Some VINs may have this recall completed, always verify the VIN in IVH before performing this repair. Please hold all warranty transactions until IVH has been updated. END OF MESSAGE GLOBAL SAFETY FIELD INVESTIGATIONS
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