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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10200154
Published by NHTSA2021-08-09
Manufacturer's number990420002L
Manufacturer's date2021-06-15
NHTSA componentPOWER 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Transmission and driveline, Automatic transmission, Manual transmission

Vehicles listed
BUICK CASCADA2016, 2017, 2018, 2019
BUICK ENCLAVE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
BUICK ENCORE2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
BUICK ENCORE GX2020, 2021
BUICK ENVISION2016, 2017, 2018, 2019, 2020, 2021
BUICK LACROSSE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
BUICK LUCERNE2010, 2011
BUICK LUCERNE2012
BUICK REGAL2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
BUICK VERANO2012, 2013, 2014, 2015, 2016, 2017
CADILLAC ATS2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CT42020, 2021
CADILLAC CT52020, 2021
CADILLAC CT62016, 2017, 2018, 2019, 2020
CADILLAC CTS2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CADILLAC CTS-V2014 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC DTS2010, 2011
CADILLAC ELR2014, 2015, 2016, 2017
CADILLAC ESCALADE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CADILLAC ESCALADE ESV2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE ESV2017, 2018, 2019, 2020, 2021
CADILLAC ESCALADE EXT2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CADILLAC SRX2010, 2011, 2012, 2013, 2014, 2015, 2016
CADILLAC STS2010, 2011
CADILLAC XT42019, 2020, 2021
CADILLAC XT52017, 2018, 2019, 2020, 2021
CADILLAC XT62020, 2021
CADILLAC XTS2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET 35002016
CHEVROLET 35002018 to 2019
CHEVROLET 35002020
CHEVROLET 35002021
CHEVROLET 45002017
CHEVROLET 4500HD2017, 2018, 2019, 2020, 2021
CHEVROLET 5500HD2017, 2018, 2019, 2020, 2021
CHEVROLET AVALANCHE2010, 2011, 2012, 2013
CHEVROLET AVEO2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
CHEVROLET BLAZER2019, 2020, 2021
CHEVROLET BOLT EV2017, 2018, 2019, 2020, 2021
CHEVROLET CAMARO2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET CAPRICE2011 to 2017
CHEVROLET CAPTIVA2012 to 2018
CHEVROLET CAPTIVA SPORT2010, 2011, 2012
CHEVROLET CHEVEROLET SS2014 to 2017
CHEVROLET CHEYENNE2017
CHEVROLET CITY EXPRESS2015, 2016
CHEVROLET COBALT2010
CHEVROLET COLORADO2010, 2011, 2012
CHEVROLET COLORADO2014
CHEVROLET COLORADO2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET CORVETTE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET CRUZE2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET EQUINOX2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET EXPRESS2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET HHR2010, 2011
CHEVROLET IMPALA2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET LOW CAB FORWARD 65002018
CHEVROLET MALIBU2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET N3002014 to 2016
CHEVROLET N3002018
CHEVROLET N300 MAX2017
CHEVROLET ORLANDO2017
CHEVROLET S102016 to 2018
CHEVROLET SILVERADO 15002010, 2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SONIC2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
CHEVROLET SPARK2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET SPARK EV2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET T SERIES2010
CHEVROLET TAHOE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET TRAILBLAZER2017 to 2020
CHEVROLET TRAILBLAZER2021
CHEVROLET TRAVERSE2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET TRAX2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET VOLT2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
CHEVROLET W-SERIES2010
GMC ACADIA2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
GMC CANYON2010, 2011, 2012
GMC CANYON2015, 2016, 2017, 2018, 2019, 2020, 2021
GMC G VAN BUS2010
GMC SAVANA2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
GMC SIERRA 15002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 15002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
GMC TOPKICK2010
GMC W-SERIES2010
GMC YUKON2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021
GMC YUKON DENALI2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON DENALI XL2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2010, 2011
GMC YUKON XL2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2015, 2016, 2017, 2018, 2019, 2020, 2021
HUMMER H22010
HUMMER H32010
ISUZU T SERIES2010
PONTIAC G32010
PONTIAC G52010
PONTIAC G62010
PONTIAC G82010
PONTIAC SOLSTICE2010
PONTIAC VIBE2010
SAAB 9-52010
SATURN ASTRA2010
SATURN AURA2010
SATURN OUTLOOK2010
SATURN SKY2010
SATURN VUE2010

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
26V0830002026-02-12. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY
25V1480002025-03-06. POWER TRAIN:AUTOMATIC TRANSMISSION
24V7970002024-10-24. POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE
20V6680002020-10-29. POWER TRAIN:AUTOMATIC TRANSMISSION
16V5020002016-07-05. ELECTRICAL SYSTEM:IGNITION; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)
15V2450002015-04-24. POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
14V3380002014-06-19. POWER TRAIN:AUTOMATIC TRANSMISSION
14V1520002014-03-31. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES
14V0920002014-02-21. POWER TRAIN:AUTOMATIC TRANSMISSION
13V0970002013-03-15. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN:AUTOMATIC TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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PIE0302A2024-04-15. Service bulletin. Engineering Information
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PIE02762024-04-08. Service bulletin. Engineering Information.
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21-NA-2452024-04-05. Service bulletin. This service bulletin provides repair information to correct a customer concern of seeing a Shift to Park Message Displayed in DIC.
PIP5781A2024-02-12. Service bulletin. 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.
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