# Service bulletin 990420002L 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: 10200154 - Published by NHTSA: 2021\-08\-09 - Manufacturer's number: 990420002L - Manufacturer's date: 2021\-06\-15 - NHTSA component: POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT ## 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/2021/MC-10200154-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200154-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Equipment and accessories, Transmission and driveline, Automatic transmission, Manual transmission ## Vehicles listed - 2016 to 2019 BUICK CASCADA - 2010 to 2021 BUICK ENCLAVE - 2013 to 2021 BUICK ENCORE - 2020 to 2021 BUICK ENCORE GX - 2016 to 2021 BUICK ENVISION - 2010 to 2019 BUICK LACROSSE - 2010 to 2011 BUICK LUCERNE - 2012 BUICK LUCERNE - 2011 to 2020 BUICK REGAL - 2012 to 2017 BUICK VERANO - 2013 to 2019 CADILLAC ATS - 2020 to 2021 CADILLAC CT4 - 2020 to 2021 CADILLAC CT5 - 2016 to 2020 CADILLAC CT6 - 2010 to 2019 CADILLAC CTS - 2014 CADILLAC CTS\-V - 2010 to 2011 CADILLAC DTS - 2014 to 2017 CADILLAC ELR - 2010 to 2020 CADILLAC ESCALADE - 2010 to 2016 CADILLAC ESCALADE ESV - 2017 to 2021 CADILLAC ESCALADE ESV - 2010 to 2013 CADILLAC ESCALADE EXT - 2021 CADILLAC ESCALADE NA - 2010 to 2016 CADILLAC SRX - 2010 to 2011 CADILLAC STS - 2019 to 2021 CADILLAC XT4 - 2017 to 2021 CADILLAC XT5 - 2020 to 2021 CADILLAC XT6 - 2013 to 2019 CADILLAC XTS - 2016 CHEVROLET 3500 - 2018 to 2019 CHEVROLET 3500 - 2020 CHEVROLET 3500 - 2021 CHEVROLET 3500 - 2017 CHEVROLET 4500 - 2017 to 2021 CHEVROLET 4500HD - 2017 to 2021 CHEVROLET 5500HD - 2010 to 2013 CHEVROLET AVALANCHE - 2011 to 2018 CHEVROLET AVEO - 2019 to 2021 CHEVROLET BLAZER - 2017 to 2021 CHEVROLET BOLT EV - 2010 to 2021 CHEVROLET CAMARO - 2011 to 2017 CHEVROLET CAPRICE - 2012 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 - 2010 CHEVROLET COBALT - 2010 to 2012 CHEVROLET COLORADO - 2014 CHEVROLET COLORADO - 2015 to 2021 CHEVROLET COLORADO - 2010 to 2021 CHEVROLET CORVETTE - 2011 to 2019 CHEVROLET CRUZE - 2010 to 2021 CHEVROLET EQUINOX - 2010 to 2021 CHEVROLET EXPRESS - 2010 to 2011 CHEVROLET HHR - 2010 to 2020 CHEVROLET IMPALA - 2018 CHEVROLET LOW CAB FORWARD 6500 - 2010 to 2021 CHEVROLET MALIBU - 2014 to 2016 CHEVROLET N300 - 2018 CHEVROLET N300 - 2017 CHEVROLET N300 MAX - 2017 CHEVROLET ORLANDO - 2016 to 2018 CHEVROLET S10 - 2010 to 2014 CHEVROLET SILVERADO 1500 - 2017 to 2021 CHEVROLET SILVERADO 1500 - 2010 to 2021 CHEVROLET SILVERADO 2500 - 2017 CHEVROLET SILVERADO 3500 - 2019 to 2021 CHEVROLET SILVERADO 4500 - 2012 to 2020 CHEVROLET SONIC - 2013 to 2021 CHEVROLET SPARK - 2014 to 2017 CHEVROLET SPARK EV - 2010 to 2021 CHEVROLET SUBURBAN - 2010 CHEVROLET T SERIES - 2010 to 2021 CHEVROLET TAHOE - 2017 to 2020 CHEVROLET TRAILBLAZER - 2021 CHEVROLET TRAILBLAZER - 2010 to 2021 CHEVROLET TRAVERSE - 2013 to 2021 CHEVROLET TRAX - 2011 to 2019 CHEVROLET VOLT - 2010 CHEVROLET W\-SERIES - 2010 to 2021 GMC ACADIA - 2010 to 2012 GMC CANYON - 2015 to 2021 GMC CANYON - 2010 GMC G VAN BUS - 2010 to 2021 GMC SAVANA - 2014 GMC SIERRA 1500 - 2019 to 2021 GMC SIERRA 1500 - 2010 to 2021 GMC SIERRA 2500 - 2010 to 2013 GMC SIERRA DENALI - 2015 to 2019 GMC SIERRA DENALI - 2011 to 2021 GMC TERRAIN - 2010 GMC TOPKICK - 2010 GMC W\-SERIES - 2010 to 2021 GMC YUKON - 2010 to 2013 GMC YUKON DENALI - 2010 to 2013 GMC YUKON DENALI XL - 2010 to 2011 GMC YUKON XL - 2012 to 2014 GMC YUKON XL - 2015 to 2021 GMC YUKON XL - 2010 HUMMER H2 - 2010 HUMMER H3 - 2010 ISUZU T SERIES - 2010 PONTIAC G3 - 2010 PONTIAC G5 - 2010 PONTIAC G6 - 2010 PONTIAC G8 - 2010 PONTIAC SOLSTICE - 2010 PONTIAC VIBE - 2010 SAAB 9\-5 - 2010 SATURN ASTRA - 2010 SATURN AURA - 2010 SATURN OUTLOOK - 2010 SATURN SKY - 2010 SATURN VUE ## Recalls for the same vehicles and component - [26V083000](/recalls/nhtsa/26V083000.md), 2026-02-12: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY - [25V148000](/recalls/nhtsa/25V148000.md), 2025-03-06: POWER TRAIN:AUTOMATIC TRANSMISSION - [24V797000](/recalls/nhtsa/24V797000.md), 2024-10-24: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE - [20V668000](/recalls/nhtsa/20V668000.md), 2020-10-29: POWER TRAIN:AUTOMATIC TRANSMISSION - [16V502000](/recalls/nhtsa/16V502000.md), 2016-07-05: ELECTRICAL SYSTEM:IGNITION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\) - [15V245000](/recalls/nhtsa/15V245000.md), 2015-04-24: POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION \(PRNDL\) - [14V338000](/recalls/nhtsa/14V338000.md), 2014-06-19: POWER TRAIN:AUTOMATIC TRANSMISSION - [14V152000](/recalls/nhtsa/14V152000.md), 2014-03-31: POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES - [14V092000](/recalls/nhtsa/14V092000.md), 2014-02-21: POWER TRAIN:AUTOMATIC TRANSMISSION - [13V097000](/recalls/nhtsa/13V097000.md), 2013-03-15: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION ## Other bulletins for the same vehicles and component - [PI0700B](/bulletins/10253611.md), 2024-04-29, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. Shudder Feel While Driving in 40\-50 MPH Range. - [PI0690B](/bulletins/10253608.md), 2024-04-29, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. MIL Illuminated. - [PI0690A](/bulletins/10253607.md), 2024-04-29, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. MIL Illuminated. - [PIE0302A](/bulletins/10253132.md), 2024-04-15, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION. Engineering Information - [PIE0302](/bulletins/10253131.md), 2024-04-15, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION. Engineering Information - [PIE0276](/bulletins/10252878.md), 2024-04-08, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. Engineering Information. - [PIE0270](/bulletins/10252872.md), 2024-04-08, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. Engineering Information. - [21\-NA\-245](/bulletins/10252775.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT; POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:PARK PAWL; ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:WARNING; POWER TRAIN. This service bulletin provides repair information to correct a customer concern of seeing a Shift to Park Message Displayed in DIC. - [PIP5781A](/bulletins/10249958.md), 2024-02-12, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; COMMUNICATION; UNKNOWN OR OTHER. This Preliminary information communicates that characterizing certain parts is no longer required, the service instruction was changed but technicians are still trying to perform the function causing further confusion. - [14204](/bulletins/10248739.md), 2024-01-16, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER. 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