# Service bulletin 08\-07\-30\-035G 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: 10234619 - Published by NHTSA: 2023\-04\-22 - Manufacturer's number: 08\-07\-30\-035G - Manufacturer's date: 2023\-04\-06 - NHTSA component: POWER TRAIN ## NHTSA's summary This bulletin provides information on the harmful effects of water or ethylene glycol in transmission fluid. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234619-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10234619-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Transmission and driveline ## Vehicles listed - 2006 to 2009 BUICK ALLURE - 2016 to 2019 BUICK CASCADA - 2005 BUICK CENTURY - 2008 to 2023 BUICK ENCLAVE - 2013 to 2022 BUICK ENCORE - 2023 BUICK ENCORE - 2020 to 2023 BUICK ENCORE GX - 2016 to 2023 BUICK ENVISION - 2005 to 2019 BUICK LACROSSE - 2020 BUICK LACROSSE - 2005 BUICK LESABRE - 2006 BUICK LESABRE - 2013 BUICK LESABRE - 2006 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2005 BUICK PARK AVENUE - 2005 to 2007 BUICK RAINIER - 2005 BUICK REGAL - 2008 to 2010 BUICK REGAL - 2011 to 2020 BUICK REGAL - 2018 BUICK REGAL TOURX - 2020 BUICK REGAL TOURX - 2005 to 2007 BUICK RENDEZVOUS - 2005 to 2007 BUICK TERRAZA - 2008 BUICK TERRAZA - 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 - 2005 to 2019 CADILLAC CTS - 2005 to 2007 CADILLAC CTS\-V - 2010 to 2012 CADILLAC CTS\-V - 2014 to 2016 CADILLAC CTS\-V - 2018 CADILLAC CTS\-V - 2005 CADILLAC DEVILLE - 2005 CADILLAC DTS - 2006 to 2011 CADILLAC DTS - 2012 CADILLAC DTS - 2005 to 2023 CADILLAC ESCALADE - 2005 to 2016 CADILLAC ESCALADE ESV - 2017 to 2023 CADILLAC ESCALADE ESV - 2007 to 2014 CADILLAC ESCALADE EXT - 2005 to 2011 CADILLAC ESCALADE EXT 1500 - 2008 to 2014 CADILLAC ESCALADE HYBRID - 2021 CADILLAC ESCALADE NA - 2005 to 2016 CADILLAC SRX - 2017 to 2019 CADILLAC SRX - 2005 to 2011 CADILLAC STS - 2012 CADILLAC STS - 2005 to 2009 CADILLAC XLR - 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 - 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 2023 CHEVROLET 4500HD - 2017 to 2022 CHEVROLET 4500XD - 2017 to 2023 CHEVROLET 5500HD - 2018 to 2022 CHEVROLET 5500XD - 2019 CHEVROLET 6500 - 2019 to 2023 CHEVROLET 6500HD - 2005 CHEVROLET ASTRO - 2007 to 2013 CHEVROLET AVALANCHE - 2014 CHEVROLET AVALANCHE - 2005 to 2013 CHEVROLET AVALANCHE 1500 - 2005 to 2007 CHEVROLET AVALANCHE 2500 - 2013 CHEVROLET AVALANCHE 2500 - 2005 to 2018 CHEVROLET AVEO - 2005 CHEVROLET BLAZER - 2006 to 2009 CHEVROLET BLAZER - 2019 to 2024 CHEVROLET BLAZER - 2005 to 2009 CHEVROLET C SERIES - 2018 CHEVROLET C3500 - 2005 to 2010 CHEVROLET C4500 - 2008 CHEVROLET C4500 NA - 2005 to 2008 CHEVROLET C5500 - 2005 to 2009 CHEVROLET C6500 - 2005 to 2009 CHEVROLET C7500 - 2008 CHEVROLET C7500NA - 2005 to 2009 CHEVROLET C8500 - 2010 to 2023 CHEVROLET CAMARO - 2011 to 2018 CHEVROLET CAPRICE - 2012 to 2017 CHEVROLET CAPRICE POLICE PURSUIT - 2008 to 2018 CHEVROLET CAPTIVA - 2009 CHEVROLET CAPTIVA SPORT - 2010 to 2012 CHEVROLET CAPTIVA SPORT - 2005 CHEVROLET CAVALIER - 2014 to 2017 CHEVROLET CHEVEROLET SS - 2017 CHEVROLET CHEYENNE - 2015 to 2016 CHEVROLET CITY EXPRESS - 2018 CHEVROLET CITY EXPRESS - 2005 to 2006 CHEVROLET CLASSIC - 2005 to 2010 CHEVROLET COBALT - 2011 to 2017 CHEVROLET COBALT - 2008 to 2010 CHEVROLET COBALT SS - 2005 to 2012 CHEVROLET COLORADO - 2013 to 2014 CHEVROLET COLORADO - 2015 to 2023 CHEVROLET COLORADO - 2005 to 2023 CHEVROLET CORVETTE - 2005 to 2008 CHEVROLET CORVETTE Z06 - 2009 CHEVROLET CORVETTE ZR1 - 2010 to 2019 CHEVROLET CRUZE - 2005 to 2006 CHEVROLET DENALI - 2005 CHEVROLET EPICA - 2005 to 2024 CHEVROLET EQUINOX - 2005 to 2021 CHEVROLET EXPRESS - 2005 to 2012 CHEVROLET EXPRESS 1500 - 2014 CHEVROLET EXPRESS 1500 - 2005 to 2011 CHEVROLET EXPRESS 2500 - 2014 CHEVROLET EXPRESS 2500 - 2023 CHEVROLET EXPRESS 2500 - 2005 to 2010 CHEVROLET EXPRESS 3500 - 2012 CHEVROLET EXPRESS 3500 - 2014 CHEVROLET EXPRESS 3500 - 2023 CHEVROLET EXPRESS 3500 - 2009 CHEVROLET EXPRESS 4500 - 2012 CHEVROLET EXPRESS 4500 - 2014 CHEVROLET EXPRESS 4500 - 2016 CHEVROLET EXPRESS 4500 - 2013 CHEVROLET EXPRESS CUTAWAY - 2005 to 2023 CHEVROLET EXPRESS CUTAWAY VAN - 2005 to 2006 CHEVROLET F SERIES - 2005 to 2011 CHEVROLET G VAN BUS - 2005 to 2008 CHEVROLET G1500 - 2005 CHEVROLET G2500 - 2005 CHEVROLET G3500 - 2008 CHEVROLET G3500 - 2018 CHEVROLET G4500 - 2006 to 2011 CHEVROLET HHR - 2005 to 2020 CHEVROLET IMPALA - 2006 CHEVROLET IMPALA \(GMX 211\) - 2005 CHEVROLET INCOMPLETE/CUTAWAY C3 - 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 - 2008 CHEVROLET LUMINA - 2014 CHEVROLET LUMINA - 2005 to 2023 CHEVROLET MALIBU - 2005 CHEVROLET MALIBU CLASSIC - 2007 CHEVROLET MALIBU CLASSIC - 2013 to 2014 CHEVROLET MALIBU ECO - 2008 to 2010 CHEVROLET MALIBU HYBRID - 2016 to 2019 CHEVROLET MALIBU HYBRID - 2005 to 2007 CHEVROLET MALIBU MAXX - 2005 to 2007 CHEVROLET MONTE CARLO - 2008 CHEVROLET MONTE CARLO - 2010 CHEVROLET MONTE CARLO - 2014 to 2016 CHEVROLET N300 - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2021 CHEVROLET ONIX - 2005 to 2007 CHEVROLET OPTRA - 2016 CHEVROLET OPTRA - 2017 CHEVROLET ORLANDO - 2005 CHEVROLET S/T BLAZER - 2005 to 2007 CHEVROLET S10 - 2016 to 2018 CHEVROLET S10 - 2005 to 2024 CHEVROLET SILVERADO 1500 - 2005 CHEVROLET SILVERADO 1500 HD - 2005 to 2024 CHEVROLET SILVERADO 2500 - 2005 to 2024 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 - 2018 CHEVROLET SS - 2005 to 2006 CHEVROLET SSR - 2007 CHEVROLET SSR - 2005 to 2023 CHEVROLET SUBURBAN - 2005 to 2011 CHEVROLET SUBURBAN 1500 - 2021 to 2022 CHEVROLET SUBURBAN 1500 - 2005 to 2006 CHEVROLET SUBURBAN 2500 - 2008 to 2011 CHEVROLET SUBURBAN 2500 - 2005 to 2009 CHEVROLET T SERIES - 2010 CHEVROLET T SERIES - 2005 to 2009 CHEVROLET T6500 - 2005 to 2009 CHEVROLET T7500 - 2005 to 2009 CHEVROLET T8500 - 2005 to 2023 CHEVROLET TAHOE ## 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 - [2025118](/recalls/tc/2025118.md), 2025-03-06: Powertrain - [25V148000](/recalls/nhtsa/25V148000.md), 2025-03-06: POWER TRAIN:AUTOMATIC TRANSMISSION - [2024637](/recalls/tc/2024637.md), 2024-10-24: Powertrain - [24V797000](/recalls/nhtsa/24V797000.md), 2024-10-24: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE - [2023142](/recalls/tc/2023142.md), 2023-03-16: Powertrain - [23V172000](/recalls/nhtsa/23V172000.md), 2023-03-16: POWER TRAIN:AUTOMATIC TRANSMISSION - [23V042000](/recalls/nhtsa/23V042000.md), 2023-02-02: POWER TRAIN:DRIVELINE:DRIVESHAFT ## Other bulletins for the same vehicles and component - [N252502891\-01](/bulletins/11036308.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the rear electric drive transmission module. - [N252502890\-01](/bulletins/11036307.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have a condition in which the internal differential nut was cross threaded or missing during assembly. Dealers will review the vehicles service history in IVH, and if necessary, replace the front electric drive transmission module. - [N242471460\-01](/bulletins/11036306.md), 2026-08-20, Service campaign: POWER TRAIN. Certain vehicles may have been built with an Electric Drive Unit mounting bolt that is too long, causing damage to the Drive Unit case. Dealers will inspect and replace the Electrical Drive Unit if necessary. - [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. - [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. - [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. JSON: [/v1/bulletins/10234619](/v1/bulletins/10234619) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%2008-07-30-035G&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10234619&vehicle=Service%20bulletin%2008-07-30-035G)