19-NA-256
Service Bulletin Details
Public Details for: 19-NA-256
This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine
- 2024 - 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 -
Models from 2024
2024 CHEVROLET BLAZER |
2024 CHEVROLET CAMARO |
2024 CHEVROLET TRAVERSE |
2024 GMC ACADIA |
Models from 2023
2023 CHEVROLET BLAZER |
2023 CHEVROLET CAMARO |
2023 CHEVROLET TRAVERSE |
2023 GMC ACADIA |
Models from 2022
2022 CHEVROLET BLAZER |
2022 CHEVROLET CAMARO |
2022 CHEVROLET COLORADO |
2022 CHEVROLET TRAVERSE |
2022 GMC ACADIA |
2022 GMC CANYON |
Models from 2021
2021 CHEVROLET BLAZER |
2021 CHEVROLET CAMARO |
2021 CHEVROLET COLORADO |
2021 CHEVROLET TRAVERSE |
2021 GMC ACADIA |
2021 GMC CANYON |
Models from 2020
2020 CHEVROLET BLAZER |
2020 CHEVROLET CAMARO |
2020 CHEVROLET COLORADO |
2020 CHEVROLET IMPALA |
2020 CHEVROLET TRAVERSE |
2020 GMC ACADIA |
2020 GMC CANYON |
Models from 2019
2019 CHEVROLET BLAZER |
2019 CHEVROLET CAMARO |
2019 CHEVROLET COLORADO |
2019 CHEVROLET IMPALA |
2019 CHEVROLET TRAVERSE |
2019 GMC ACADIA |
2019 GMC CANYON |
Models from 2018
2018 CHEVROLET CAMARO |
2018 CHEVROLET COLORADO |
2018 CHEVROLET IMPALA |
2018 CHEVROLET TRAVERSE |
2018 GMC ACADIA |
2018 GMC CANYON |
Models from 2017
2017 CHEVROLET CAMARO |
2017 CHEVROLET COLORADO |
2017 CHEVROLET EQUINOX |
2017 CHEVROLET IMPALA |
2017 CHEVROLET TRAVERSE |
2017 GMC ACADIA |
2017 GMC CANYON |
2017 GMC TERRAIN |
Models from 2016
2016 CHEVROLET CAMARO |
2016 CHEVROLET COLORADO |
2016 CHEVROLET EQUINOX |
2016 CHEVROLET IMPALA |
2016 CHEVROLET TRAVERSE |
2016 GMC ACADIA |
2016 GMC CANYON |
2016 GMC TERRAIN |
Models from 2015
2015 CHEVROLET CAMARO |
2015 CHEVROLET COLORADO |
2015 CHEVROLET EQUINOX |
2015 CHEVROLET IMPALA |
2015 CHEVROLET TRAVERSE |
2015 GMC ACADIA |
2015 GMC CANYON |
2015 GMC TERRAIN |
Models from 2014
2014 CHEVROLET CAMARO |
2014 CHEVROLET CAPTIVA SPORT |
2014 CHEVROLET EQUINOX |
2014 CHEVROLET IMPALA |
2014 CHEVROLET TRAVERSE |
2014 GMC ACADIA |
2014 GMC TERRAIN |
Models from 2013
2013 CHEVROLET CAMARO |
2013 CHEVROLET CAPRICE POLICE PURSUIT |
2013 CHEVROLET CAPTIVA SPORT |
2013 CHEVROLET EQUINOX |
2013 CHEVROLET IMPALA |
2013 CHEVROLET TRAVERSE |
2013 GMC ACADIA |
2013 GMC TERRAIN |
Models from 2012
Models from 2011
2011 CHEVROLET CAMARO |
2011 CHEVROLET EQUINOX |
2011 CHEVROLET MALIBU |
2011 CHEVROLET TRAVERSE |
2011 GMC ACADIA |
2011 GMC TERRAIN |
Models from 2010
2010 CHEVROLET CAMARO |
2010 CHEVROLET EQUINOX |
2010 CHEVROLET MALIBU |
2010 CHEVROLET TRAVERSE |
2010 GMC ACADIA |
2010 GMC TERRAIN |
2010 PONTIAC G6 |
2010 SATURN OUTLOOK |
2010 SATURN VUE |
Models from 2009
2009 CHEVROLET EQUINOX |
2009 CHEVROLET MALIBU |
2009 CHEVROLET TRAVERSE |
2009 GMC ACADIA |
2009 PONTIAC G6 |
2009 PONTIAC G8 |
2009 PONTIAC TORRENT |
2009 SATURN AURA |
2009 SATURN OUTLOOK |
2009 SATURN VUE |
Models from 2008
2008 CHEVROLET EQUINOX |
2008 CHEVROLET MALIBU |
2008 GMC ACADIA |
2008 PONTIAC G6 |
2008 PONTIAC G8 |
2008 PONTIAC TORRENT |
2008 SATURN AURA |
2008 SATURN OUTLOOK |
2008 SATURN VUE |
Models from 2007
2007 GMC ACADIA |
2007 SATURN AURA |
2007 SATURN OUTLOOK |
Bulletin No.: Service Bulletin Date: 19-NA-256 December, 2023 INFORMATION Subject: Diagnostic Tips for Knocking, Rattle, Squeak and/or Squeal Type Noise from Engine – Engine Replacement Recommendations for HFV6 Gen 1 and Gen 2 This bulletin replaces PIP5216G. Please discard PIP5216G. Brand: Buick Model: Model Year: VIN: to Enclave 2008 2024 LaCrosse 2010 2019 Regal 2018 2020 ATS 2013 ATS-V 2016 CT4 2022 2024 3.6L (LF4) CT5 2020 2024 3.0L (LGY) CT6 2016 2020 3.0L (LGW) 3.6L (LGX) CTS 2007 CTS V-Sport 2014 3.6L (LF3) SRX 2007 2016 2.8L (LAU) 3.0L (LF1, LFW) 3.6L (LFX) STS 2007 2011 3.6L (LY7, LLT) XT5 2017 2024 3.6L (LGX) Cadillac from to Engine: from 3.6L (LLT, LFY) — — 3.0L (LF1, LFW) 3.6L (LLT, LFX, LGX) 3.6L (LGX) 3.6L (LF4) — — 3.0L (LF1, LFW) 3.6L (LY7, LLT, LFX, LGX) XT6 2020 2024 3.6L (LGX) XTS 2013 2019 3.6L (LF3, LFX) Copyright 2023 General Motors LLC. All Rights Reserved. — 3.6L (LFX, LGX) 2019 2019 Transmission: — Page 2 Brand: Chevrolet GMC Pontiac Saturn December, 2023 Model: Model Year: Bulletin No.: 19-NA-256 VIN: from to Blazer 2019 2024 3.6L (LGX) Camaro 2010 2024 3.6L (LLT, LFX, LGX) Caprice PPV 2012 2013 3.6L (LFX) Captiva Sport 2012 2015 3.6L (LFX) Colorado 2015 2022 3.6L (LFX, LGZ) Equinox 2008 2017 Impala VIN W 2012 2016 3.6L (LFX) Impala VIN 1 (including Bi-fuel) 2014 2016 3.6L (LFR, LFX) — to Engine: from — 3.0L (LFW, LF1) 3.6L (LFX) Impala 2017 2020 3.6L (LFX) Malibu 2008 2012 3.6L (LY7) Traverse 2009 2024 3.6L (LLT, LFY) Acadia 2007 2024 3.6L (LY7, LLT, LGX) Canyon 2015 2022 Terrain 2010 2017 3.0L (LF1, LFW) 3.6L (LFX) G6 2008 2010 3.6L (LY7) G8 2008 2009 Torrent 2008 AURA 2007 VUE 2008 OUTLOOK 2007 — — — — 3.6L (LFX, LGZ) 3.0L (LF1, LFW) 3.6L (LY7, LLT) — — — 3.0L (LFW) 3.6L (LLT) 2009 2010 Transmission: 3.6L (LY7) — — 3.6L (LY7) 3.6L (LY7, LLT) Involved Region or Country North America, Europe, Middle East Condition Some customers may comment on one or more of the following conditions: • Knocking noise • Seized engine • Lower end squeak or squeal Cause This condition may be caused by a crankshaft main or rod bearing failure. — Bulletin No.: 19-NA-256 December, 2023 Page 3 1. Verify there is metal in the engine oil by removing the oil pan. 2. Remove the main or rod bearing caps: • If the main and/or rod bearing are not the cause of the debris, refer to SI for further diagnostics. Correction 3961446 3961447 • If the main and/or rod bearings are found to be the cause of the debris, before deciding whether to replace the engine or repair it, refer to the Service Procedure below before making that determination. Page 4 December, 2023 Bulletin No.: 19-NA-256 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. Service Procedure 3961450 1. Inspect the oil control solenoids for metal debris. This shows the oil filter is in by-pass and unfiltered oil with bearing debris was pumped into the oil lubrication galleys, throughout the engine. 3961448 3966789 2. Inspect for damage to the cam caps journals and camshaft journals on the heads (obvious signs of metal through the cap). Bulletin No.: 19-NA-256 December, 2023 Page 5 3. Inspect the timing chain idler sprockets for stiffness when turning (Should turn smooth and free). 3961451 Any of the above 3 instances would be cause to replace the engine instead of repair. While engine replacement at this point will be necessary, additional inspections should also be made for conditions: – Sludging caused by lack of maintenance. Refer to Service Bulletin# 16-NA-222. – Global oil starvation caused by running the engine very low on oil. – Intentional abuse to the engine. Important: If this is the case, then a call to the Technical Assistance Center (TAC) is NOT required prior to engine replacement. If these conditions exist, warranty could be declined, or feedback made on Warranty Parts Center (WPC) inspection. Maintenance documentation should be obtained in these instances for warranty validation. Clearly document your findings on your repair order, fill out the cost worksheet, and call Product Quality Center (PQC) only if required for your dealer. A repair and then replacement will usually be cause for additional inspection and scrutiny that could result in more questioning about the repair methods. HFV6 engines are scheduled to be returned to the WPC for inspection to verify the concern, as well as the information provided in the repair order to support the engine replacement. 3961452 Version 6 Modified Released November 13, 2019 Revised January 14, 2021 – Added the 2021 Model Year to applicable Models. Revised May 24, 2021 – Added the Blazer and CT5 models. Revised August 20, 2021 – Added 2020-2022 XT6 (RPO LGX), 2022 CT4 (RPO LF4), 2022 Model Year to Enclave, CT5, XT5, Blazer, Camaro, Colorado, Traverse, Acadia and Canyon and added Middle East to Involved Region or Country section. Revised March 15, 2023 – Added the 2023 Model Year to applicable vehicles and Europe to the Involved Region or Country section. Revised November 29, 2023 – Added the 2024 Model Year to applicable vehicles. Additional SI Keywords: PIP5216, PIP5216A, PIP5216B, PIP5216C, PIP5216D, PIP5216E, PIP5216F, PIP5216G, PIP5216H, PIP5216I, PIP5216J, PIP5216K, PIP5216L, PIP5216M 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