NHTSA ID Number: 10222837
Manufacturer Communication Number: 22-NA-193
Summary
This informational bulletin explains to the tech on where to look for a possible concern with the rockers causing the MIL to illuminate.
Condition
Some customers may comment that the MIL is illuminated.
Some technicians may find one or more of the following codes set in the Engine Control Module (ECM).
- P219A
- P219B
Some technicians may also comment that no noise is associated with the condition and passes the AFIT injector test.
Note: If noise is present, review Bulletin 21–NA-278.
Cause
While common for this to be diagnosed as injectors- AFIT usually finds this issue. This bulletin addresses damaged Switching Roller Finger Followers (SRFF). Damaged; including stuck or binding locking pin or broken or worn Pin shelf.
64 Affected Products
Vehicles
MAKE | MODEL | YEAR |
BUICK | LACROSSE | 2017-2019 |
BUICK | REGAL | 2018-2020 |
CADILLAC | ATS | 2016-2019 |
CADILLAC | ATS-V | 2016-2018 |
CADILLAC | CT5 | 2020-2022 |
CADILLAC | CT6 | 2016-2020 |
CADILLAC | CTS | 2016-2019 |
CADILLAC | CTS-V | 2016, 2018 |
CADILLAC | XT5 | 2017-2022 |
CADILLAC | XT6 | 2020-2022 |
CHEVROLET | BLAZER | 2019-2021 |
CHEVROLET | CAMARO | 2016-2022 |
CHEVROLET | COLORADO | 2017-2022 |
GMC | ACADIA | 2017-2022 |
GMC | CANYON | 2017-2022 |
1 Associated Document
Manufacturer Communications
Bulletin No.: 22-NA-193
Date: October, 2022
https://www.nhtsa.gov/recalls?nhtsaId=10222837
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Copyright 2022 General Motors LLC. All Rights Reserved. Service Bulletin Bulletin No.: 22-NA-193 Date: October, 2022 INFORMATION Subject: Information on Malfunction Indicator Lamp (MIL) Illuminated – DTC P219A and/or P219B Set Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Buick LaCrosse 2017 2019 LGX Regal 2018 2020 LGX Cadillac ATS 2016 2019 LGX CT5 2020 2022 LGY CT6 2016 2020 LGW, LGX CTS 2016 2019 LGX XT5 2017 2022 LGY XT6 2020 2022 LGX Chevrolet Blazer 2018 2021 LGX Camaro 2016 2022 LGX Colorado 2017 2022 LGZ GMC Acadia 2017 2022 LGX Canyon LGZ Holden Acadia 2019 2020 LGX Commodore 2018 2020 LGX Involved Region or Country North America Condition Some customers may comment that the MIL is illuminated. Some technicians may find one or more of the following codes set in the Engine Control Module (ECM). • P219A • P219B Some technicians may also comment that no noise is associated with the condition and passes the AFIT injector test. Note: If noise is present, review Bulletin 21–NA-278. Cause While common for this to be diagnosed as injectors- AFIT usually finds this issue. This bulletin addresses damaged Switching Roller Finger Followers (SRFF). Damaged; including stuck or binding locking pin or broken or worn Pin shelf. Page 2 October, 2022 Bulletin No.: 22-NA-193 Information 1. Remove the cam cover of the affected bank (A is Bank 1, B is Bank 2) to inspect for Switching Roller Finger Followers (SRFF) and dual function stationary hydraulic lash adjusters for cylinder 5 or cylinder 2. 2. Inspect the SRFFs and rocker assemblies for any damage or dislodge. ⇒ While inspecting the rockers, it will be necessary to rotate the engine over by hand to ensure that the rockers are opening the valves. Note: Camshaft carrier assembly removal will be necessary to fully inspect the rockers and SRFFs. ⇒ Below are pictures of possible SRFF failures. If any one of the SRFFs are damaged, it will be necessary to replace all four on the affected cylinder. 3. Replace the SHLA’s and the damaged Switching Roller Finger Followers (SRFF) on the bank found to be the concern. 5924237 5924233 4. If any of the conditions listed above have been verified, refer to the Service Procedure listed in SI for replacement of the Switching Roller Finger Followers (SRFF) and dual function stationary hydraulic lash adjusters cylinder 5 or cylinder 2. Bulletin No.: 22-NA-193 October, 2022 Page 3 Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. In the event of a conflict between the procedures set forth in this bulletin and the laws that apply to your dealership, you must follow those applicable laws. Version 1 Modified Released September 28, 2022 GM bulletins are intended for use by professional technicians, NOT a “do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION
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