17NA352
Service Bulletin Details
Public Details for: 17NA352
This informational bulletin explains how the soot readings went from grams to percentage. 2-1-18 change subject to reflect the test procedure. 5-1-18 updated the information section.
- 2021 - 2020 - 2019 - 2018 - 2017 - 2016 -
Models from 2016
2016 CHEVROLET COLORADO |
2016 GMC CANYON |
Bulletin No.: Service Bulletin Date: 17-NA-352 October, 2020 INFORMATION Subject: Brand: Chevrolet GMC Information On Diesel Exhaust System Configuration and DPF Soot Accumulation, Malfunction Indicator Lamp (MIL) Illuminated - DTC P2463 Set Model: Model Year: from Colorado 2016 Express 2017 Canyon 2016 Savana 2017 Involved Region or Country VIN: to from to 2021 - - Engine: Transmission: LWN - North America, Israel, Palestine, Middle East There has been a change in the values displayed in GDS 2. Starting with the 2016 Colorado/Canyon, and now on the 2017 Express/Savana, the DPF Soot Accumulation is measured in percent instead of grams. On vehicles equipped with a LWN engine, the ECM will not try to perform a regeneration until the DPF Soot Accumulation increases to approximately 100%. If the DPF Soot Accumulation increases to 110% on a pick-up or 118% on a van and the system has not been able to regenerate, the “continue driving” message will be displayed on the DIC. If the DPF Soot Accumulation increases to 125% on a pick-up or 135% on a van, DTC P2463 will set and will now require a service regeneration to clean the DPF. Information Service Regeneration vs Regeneration Enable and Drive Cycle A Service Regeneration is designed to lower the DPF Soot Accumulation in the DPF in a very controlled way. It is not as effective at lowering the soot accumulated in the DPF as a Regeneration Enable followed by a drive. Please perform a service regeneration if instructed to by service information. As a rule of thumb, if a vehicle has less than 70% DPF Soot Accumulation, do not perform a regeneration unless instructed by Service Information. If you are concerned about the DPF Soot Accumulation, perform a regeneration enable and return the vehicle to the customer. Below is an illustration of the location of the exhaust components, Sensors, and Injectors on the exhaust aftertreatment system for the above vehicles: 4889155 Copyright 2020 General Motors LLC. All Rights Reserved. Page 2 October, 2020 1) SENSOR, EXH PRTLT 8) INJECTOR, EMIS RDCN FLUID 2) SENSOR, EXH PRESS DIFF 9) SENSOR, EXH TEMP (POSN 2) 3) FILTER, EXH PRTLT 10) SENSOR, EXH TEMP (POSN 1) 4) SENSOR, EXH TEMP (POSN 4) 11) SENSOR, NOX (POSN 1) 5) SENSOR, EXH TEMP (POSN 3) 12) CONVERTER, W/UP OXIDN CTLTC 6) SENSOR, NOX (POSN 2) 13) INJECTOR, INDIRECT FUEL 7) CONVERTER, NOX CTLTC 14) SENSOR, EXH TEMP (POSN 5) Additional Information Note: There is no need to check soot mass at PDI unless a message or DTC directs you to. If the vehicles AT PDI reads 40% soot accumulation, it is NOT considered high and does not require any service. • If you have a truck with a “continue driving” message on the DIC and it has less than 500 miles (800 kilometers), review PIP5468 and 10-06-05-002. Note: Use this formula as a diagnostic aid and in the administration of a maintenance schedule. It should NOT be used to determine warranty coverage. Bulletin No.: 17-NA-352 Some vehicles may spend a lot of time idling, use the formula to aid in determining the equivalent mileage (kilometers). • Check and record the total engine hours on the Drivers Information Center (DIC). • Multiply this time by 33 miles or 53 km. • The result should be close to the mileage on the odometer. ⇒ Example 1; If a vehicle has 1.7 engine hours and 60 miles (97 km) on the odometer, the engine run time would equate to about 56 miles (90 km) (1.7 X 33 = 56 (1.7 X 53 = 90)). This vehicle should not have much soot accumulation in the DPF. Some of these trucks can go 500 - 700 miles (800-1100 km) between a regeneration. ⇒ Example 2; If the vehicle has 626.9 engine hours and 7,269 miles (11,698 km) on the odometer, the engine run time would equate to about 20,688 miles (33,226 km) (626.9 X 33 = 20,688 (626.9 X 53 = 33,226)). This vehicle would be considered a vehicle that idles a lot and this information may be useful in diagnosing any issues. Parts Information No parts are required for this repair. Version 6 Modified Released November 09,2017 Revised February 02, 2018 - Change Subject. Revised May 03, 2018 - Update Information section. Revised July 25, 2018 – Added 2019 Model Year. Revised September 19, 2019 – Added 2020 Model Year. Revised October 19, 2020 – Added 2021 Model Year. Bulletin No.: 17-NA-352 October, 2020 Page 3