# Service bulletin 99\-04\-20\-002N A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 10232275 - Published by NHTSA: 2023\-03\-03 - Manufacturer's number: 99\-04\-20\-002N - Manufacturer's date: 2023\-02\-16 - NHTSA component: POWER TRAIN ## NHTSA's summary This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232275-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10232275-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Transmission and driveline ## Vehicles listed - 2016 to 2019 BUICK CASCADA - 2010 to 2023 BUICK ENCLAVE - 2013 to 2022 BUICK ENCORE - 2023 BUICK ENCORE - 2020 to 2023 BUICK ENCORE GX - 2016 to 2023 BUICK ENVISION - 2010 to 2019 BUICK LACROSSE - 2020 BUICK LACROSSE - 2013 BUICK LESABRE - 2010 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2010 BUICK REGAL - 2011 to 2020 BUICK REGAL - 2018 BUICK REGAL TOURX - 2020 BUICK REGAL TOURX - 2012 to 2017 BUICK VERANO - 2013 to 2019 CADILLAC ATS - 2015 to 2018 CADILLAC ATS\-V - 2020 to 2023 CADILLAC CT4 - 2020 to 2023 CADILLAC CT5 - 2013 to 2015 CADILLAC CT6 - 2016 to 2020 CADILLAC CT6 - 2021 CADILLAC CT6 - 2010 to 2019 CADILLAC CTS - 2010 to 2012 CADILLAC CTS\-V - 2014 to 2016 CADILLAC CTS\-V - 2018 CADILLAC CTS\-V - 2010 to 2011 CADILLAC DTS - 2012 CADILLAC DTS - 2014 to 2017 CADILLAC ELR - 2010 to 2023 CADILLAC ESCALADE - 2010 to 2016 CADILLAC ESCALADE ESV - 2017 to 2023 CADILLAC ESCALADE ESV - 2010 to 2014 CADILLAC ESCALADE EXT - 2010 to 2011 CADILLAC ESCALADE EXT 1500 - 2010 to 2014 CADILLAC ESCALADE HYBRID - 2021 CADILLAC ESCALADE NA - 2023 CADILLAC LYRIQ - 2010 to 2016 CADILLAC SRX - 2017 to 2019 CADILLAC SRX - 2010 to 2011 CADILLAC STS - 2012 CADILLAC STS - 2018 CADILLAC XT4 - 2019 to 2023 CADILLAC XT4 - 2013 to 2016 CADILLAC XT5 - 2017 to 2023 CADILLAC XT5 - 2020 to 2023 CADILLAC XT6 - 2013 to 2019 CADILLAC XTS - 2020 CADILLAC XTS - 2023 CADILLAC redundant LYRIQ - 2014 to 2015 CHEVROLET 3500 - 2016 CHEVROLET 3500 - 2017 to 2019 CHEVROLET 3500 - 2020 CHEVROLET 3500 - 2021 CHEVROLET 3500 - 2022 CHEVROLET 3500 - 2016 CHEVROLET 4500 - 2017 to 2019 CHEVROLET 4500 - 2020 CHEVROLET 4500 - 2022 CHEVROLET 4500 - 2017 to 2022 CHEVROLET 4500HD - 2017 to 2022 CHEVROLET 4500XD - 2017 to 2022 CHEVROLET 5500HD - 2018 to 2022 CHEVROLET 5500XD - 2019 CHEVROLET 6500 - 2022 CHEVROLET 6500HD - 2010 to 2013 CHEVROLET AVALANCHE - 2014 CHEVROLET AVALANCHE - 2010 to 2013 CHEVROLET AVALANCHE 1500 - 2013 CHEVROLET AVALANCHE 2500 - 2010 to 2018 CHEVROLET AVEO - 2019 to 2023 CHEVROLET BLAZER - 2022 to 2023 CHEVROLET BOLT EUV - 2017 to 2023 CHEVROLET BOLT EV - 2018 CHEVROLET C3500 - 2010 CHEVROLET C4500 - 2010 to 2023 CHEVROLET CAMARO - 2011 to 2018 CHEVROLET CAPRICE - 2012 to 2017 CHEVROLET CAPRICE POLICE PURSUIT - 2010 to 2018 CHEVROLET CAPTIVA - 2010 to 2012 CHEVROLET CAPTIVA SPORT - 2014 to 2017 CHEVROLET CHEVEROLET SS - 2017 CHEVROLET CHEYENNE - 2015 to 2016 CHEVROLET CITY EXPRESS - 2018 CHEVROLET CITY EXPRESS - 2010 CHEVROLET COBALT - 2011 to 2017 CHEVROLET COBALT - 2010 CHEVROLET COBALT SS - 2010 to 2012 CHEVROLET COLORADO - 2013 to 2014 CHEVROLET COLORADO - 2015 to 2023 CHEVROLET COLORADO - 2010 to 2023 CHEVROLET CORVETTE - 2010 to 2019 CHEVROLET CRUZE - 2010 to 2023 CHEVROLET EQUINOX - 2010 to 2021 CHEVROLET EXPRESS - 2010 to 2012 CHEVROLET EXPRESS 1500 - 2014 CHEVROLET EXPRESS 1500 - 2010 to 2011 CHEVROLET EXPRESS 2500 - 2014 CHEVROLET EXPRESS 2500 - 2023 CHEVROLET EXPRESS 2500 - 2010 CHEVROLET EXPRESS 3500 - 2012 CHEVROLET EXPRESS 3500 - 2014 CHEVROLET EXPRESS 3500 - 2023 CHEVROLET EXPRESS 3500 - 2012 CHEVROLET EXPRESS 4500 - 2014 CHEVROLET EXPRESS 4500 - 2016 CHEVROLET EXPRESS 4500 - 2013 CHEVROLET EXPRESS CUTAWAY - 2010 to 2011 CHEVROLET G VAN BUS - 2018 CHEVROLET G4500 - 2010 to 2011 CHEVROLET HHR - 2010 to 2020 CHEVROLET IMPALA - 2016 to 2019 CHEVROLET LOW CAB FORWARD 3500 - 2016 to 2017 CHEVROLET LOW CAB FORWARD 4500 - 2016 to 2017 CHEVROLET LOW CAB FORWARD 5500 - 2018 CHEVROLET LOW CAB FORWARD 6500 - 2014 CHEVROLET LUMINA - 2010 to 2023 CHEVROLET MALIBU - 2013 to 2014 CHEVROLET MALIBU ECO - 2010 CHEVROLET MALIBU HYBRID - 2016 to 2019 CHEVROLET MALIBU HYBRID - 2010 CHEVROLET MONTE CARLO - 2014 to 2016 CHEVROLET N300 - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2021 CHEVROLET ONIX - 2016 CHEVROLET OPTRA - 2017 CHEVROLET ORLANDO - 2016 to 2018 CHEVROLET S10 - 2010 to 2023 CHEVROLET SILVERADO 1500 - 2010 to 2023 CHEVROLET SILVERADO 2500 - 2010 to 2023 CHEVROLET SILVERADO 3500 - 2019 to 2023 CHEVROLET SILVERADO 4500 - 2019 to 2021 CHEVROLET SILVERADO 5500 - 2023 CHEVROLET SILVERADO 5500 - 2019 CHEVROLET SILVERADO 6500 - 2021 to 2023 CHEVROLET SILVERADO 6500 - 2011 CHEVROLET SONIC - 2012 to 2020 CHEVROLET SONIC - 2013 to 2022 CHEVROLET SPARK - 2014 to 2017 CHEVROLET SPARK EV - 2018 CHEVROLET SS - 2010 to 2023 CHEVROLET SUBURBAN - 2010 to 2011 CHEVROLET SUBURBAN 1500 - 2021 to 2022 CHEVROLET SUBURBAN 1500 - 2010 to 2011 CHEVROLET SUBURBAN 2500 - 2010 CHEVROLET T SERIES - 2010 to 2023 CHEVROLET TAHOE - 2010 to 2013 CHEVROLET TAHOE HYBRID - 2010 to 2016 CHEVROLET TAHOE POLICE PURSUIT - 2013 to 2014 CHEVROLET TRAILBLAZER - 2017 to 2020 CHEVROLET TRAILBLAZER - 2021 to 2023 CHEVROLET TRAILBLAZER - 2010 to 2023 CHEVROLET TRAVERSE - 2013 to 2022 CHEVROLET TRAX - 2011 to 2019 CHEVROLET VOLT - 2010 to 2011 CHEVROLET W\-SERIES - 2010 CHEVROLET W3500 - 2010 CHEVROLET W4500 - 2010 CHEVROLET W5500 - 2019 CHEVROLET duplicate SILVERADO 5500 - 2010 to 2023 GMC ACADIA - 2010 to 2013 GMC CANYON - 2015 to 2023 GMC CANYON - 2010 to 2015 GMC DENALI - 2010 to 2013 GMC ENVOY - 2010 to 2011 GMC G VAN BUS - 2017 to 2018 GMC G3500 - 2022 to 2023 GMC HUMMER EV PICKUP - 2010 to 2023 GMC SAVANA - 2010 to 2017 GMC SAVANA 1500 - 2010 to 2018 GMC SAVANA 2500 - 2010 to 2018 GMC SAVANA 3500 - 2010 to 2023 GMC SIERRA 1500 - 2010 to 2023 GMC SIERRA 2500 - 2010 to 2023 GMC SIERRA 3500 - 2010 to 2020 GMC SIERRA DENALI - 2010 GMC T7500 - 2010 to 2023 GMC TERRAIN - 2022 GMC TERRAIN NA - 2010 to 2013 GMC TOPKICK - 2010 to 2011 GMC W\-SERIES - 2010 GMC W3500 - 2010 GMC W4500 - 2010 GMC W5500 - 2010 to 2023 GMC YUKON - 2010 to 2013 GMC YUKON DENALI - 2015 to 2019 GMC YUKON DENALI - 2010 to 2018 GMC YUKON DENALI XL - 2010 to 2013 GMC YUKON HYBRID - 2010 to 2011 GMC YUKON XL - 2012 to 2014 GMC YUKON XL - 2015 to 2023 GMC YUKON XL - 2010 to 2011 GMC YUKON XL 1500 - 2012 GMC YUKON XL 1500 - 2010 to 2011 GMC YUKON XL 2500 - 2012 to 2013 GMC YUKON XL 2500 - 2010 HUMMER H2 - 2010 HUMMER H3 - 2010 PONTIAC G3 ## Recalls for the same vehicles and component - [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\) - [26V085000](/recalls/nhtsa/26V085000.md), 2026-02-13: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE - [2026061](/recalls/tc/2026061.md), 2026-02-12: Powertrain - [2026060](/recalls/tc/2026060.md), 2026-02-12: Powertrain - [26V083000](/recalls/nhtsa/26V083000.md), 2026-02-12: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY - [2025118](/recalls/tc/2025118.md), 2025-03-06: Powertrain - [25V148000](/recalls/nhtsa/25V148000.md), 2025-03-06: POWER TRAIN:AUTOMATIC TRANSMISSION - [2024679](/recalls/tc/2024679.md), 2024-11-07: Powertrain - [24V839000](/recalls/nhtsa/24V839000.md), 2024-11-07: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE - [2024637](/recalls/tc/2024637.md), 2024-10-24: Powertrain ## Other bulletins for the same vehicles and component - [25\-NA\-080](/bulletins/11026044.md), 2025-12-03, Service bulletin: POWER TRAIN. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear \- DTC P2732 Set. - [24\-NA\-262](/bulletins/11026024.md), 2025-12-03, Service bulletin: POWER TRAIN. This bulletin helps aid the tech in possible 10L100 transmission noise that may be normal or abnormal depending on the concern noted. - [25\-NA\-080](/bulletins/11024334.md), 2025-10-16, Service bulletin: POWER TRAIN. This service bulletin provides a procedure to overhaul the control valve to replace a plate and worn down check ball to correct the customers concern of No Reverse, No Shift Past Third Gear \- DTC P2732 Set. - [23\-NA\-119](/bulletins/11024331.md), 2025-10-16, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This service bulletin provides service procedure information to correct a customer concern of Shift to Park Displayed on DIC When Vehicle is in\- Park, No Start \- DTC B000A Set. - [N242454441 \-03](/bulletins/11024189.md), 2025-10-09, Service campaign: POWER TRAIN. Certain vehicles listed above, may have a condition where the transmission control valve has worn, resulting in a gradual loss of pressure within the valve. The effects can cause harsh shifting, setting a service engine soon message, reduced engine performance or P0747 diagnostic trouble code. Dealers are to install a new control valve body. The repairs will be made at no charge to the customer. - [22\-NA\-182](/bulletins/11023369.md), 2025-09-27, Service bulletin: POWER TRAIN. This service bulletin advises the technician to check if the transmission cooler lines are twisted to correct customer concerns of Harsh Shift, Shudder, Surge, Stall, Transmission Overheating and/or High Transmission Fluid Temperature. - [24\-NA\-078](/bulletins/11020268.md), 2025-07-08, Service bulletin: ENGINE; POWER TRAIN; ELECTRICAL SYSTEM. This bulletin advises the tech to replace the starter and not the trans if grinding or growling is heard from the transmission area. - [21\-NA\-238](/bulletins/11020259.md), 2025-07-07, Service bulletin: POWER TRAIN. This technical bulletin provides a procedure to inspect the front pump of the transmission for a possible leak. - [N252494003\-01](/bulletins/11019752.md), 2025-06-26, Service campaign: POWER TRAIN. Certain vehicles listed above, may have a condition where the connecting rod and/or crankshaft engine components in these vehicles may have manufacturing defects that can lead to engine damage and engine failure. This special coverage covers if an engine failure occurs in the vehicle as a result of the condition described above for a period of 10 years or 150,000 miles \(240,000 km\), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after May 23, 2025, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to May 23, 2025, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage \(“Customers”\) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to replace the engine. The repairs will be made at no charge to the customer. - [PI0281L](/bulletins/11019516.md), 2025-06-12, Service bulletin: STEERING; POWER TRAIN; SUSPENSION. This preliminary informational \(PI\) bulletin provides information to dealership personnel that may be helpful when addressing underbody component corrosion with customers. 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