# Service bulletin 990420002K

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: 10168212
- Published by NHTSA: 2019\-11\-25
- Manufacturer's number: 990420002K
- Manufacturer's date: 2019\-10\-29
- NHTSA component: POWER TRAIN

## NHTSA's summary

This informational bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operations.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168212-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10168212-9999.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 2020 BUICK ENCLAVE
- 2013 to 2020 BUICK ENCORE
- 2016 to 2020 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 CADILLAC CT4
- 2020 CADILLAC CT5
- 2016 to 2020 CADILLAC CT6
- 2010 to 2019 CADILLAC CTS
- 2010 to 2011 CADILLAC DTS
- 2014 to 2017 CADILLAC ELR
- 2010 to 2020 CADILLAC ESCALADE
- 2010 to 2016 CADILLAC ESCALADE ESV
- 2017 to 2020 CADILLAC ESCALADE ESV
- 2010 to 2013 CADILLAC ESCALADE EXT
- 2010 to 2016 CADILLAC SRX
- 2010 to 2011 CADILLAC STS
- 2019 to 2020 CADILLAC XT4
- 2017 to 2020 CADILLAC XT5
- 2020 CADILLAC XT6
- 2013 to 2019 CADILLAC XTS
- 2016 CHEVROLET 3500
- 2018 CHEVROLET 3500
- 2019 to 2020 CHEVROLET 4500HD
- 2019 to 2020 CHEVROLET 5500HD
- 2010 to 2013 CHEVROLET AVALANCHE
- 2010 to 2018 CHEVROLET AVEO
- 2019 to 2020 CHEVROLET BLAZER
- 2017 to 2020 CHEVROLET BOLT EV
- 2010 to 2020 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 2020 CHEVROLET COLORADO
- 2010 to 2020 CHEVROLET CORVETTE
- 2011 to 2019 CHEVROLET CRUZE
- 2010 to 2020 CHEVROLET EQUINOX
- 2010 to 2020 CHEVROLET EXPRESS
- 2010 to 2011 CHEVROLET HHR
- 2010 to 2020 CHEVROLET IMPALA
- 2017 to 2018 CHEVROLET LOW CAB FORWARD 4500
- 2017 to 2018 CHEVROLET LOW CAB FORWARD 5500
- 2018 CHEVROLET LOW CAB FORWARD 6500
- 2010 to 2020 CHEVROLET MALIBU
- 2014 to 2016 CHEVROLET N300
- 2018 CHEVROLET N300
- 2017 CHEVROLET N300 MAX
- 2017 CHEVROLET ORLANDO
- 2016 to 2018 CHEVROLET S10
- 2017 CHEVROLET SILVERADO
- 2010 to 2020 CHEVROLET SILVERADO 1500
- 2010 to 2020 CHEVROLET SILVERADO 2500
- 2010 to 2020 CHEVROLET SILVERADO 3500
- 2019 to 2020 CHEVROLET SILVERADO 4500
- 2012 to 2020 CHEVROLET SONIC
- 2013 to 2020 CHEVROLET SPARK
- 2014 to 2017 CHEVROLET SPARK EV
- 2010 to 2020 CHEVROLET SUBURBAN
- 2010 CHEVROLET T SERIES
- 2010 to 2020 CHEVROLET TAHOE
- 2017 to 2019 CHEVROLET TRAILBLAZER
- 2010 to 2020 CHEVROLET TRAVERSE
- 2013 to 2020 CHEVROLET TRAX
- 2011 to 2019 CHEVROLET VOLT
- 2010 CHEVROLET W\-SERIES
- 2010 to 2020 GMC ACADIA
- 2010 to 2012 GMC CANYON
- 2015 to 2020 GMC CANYON
- 2010 GMC G VAN BUS
- 2010 to 2020 GMC SAVANA
- 2017 GMC SIERRA
- 2010 to 2020 GMC SIERRA 1500
- 2010 to 2020 GMC SIERRA 2500
- 2010 to 2020 GMC SIERRA 3500
- 2010 to 2013 GMC SIERRA DENALI
- 2015 to 2016 GMC SIERRA DENALI
- 2018 to 2019 GMC SIERRA DENALI
- 2010 to 2020 GMC TERRAIN
- 2010 GMC TOPKICK
- 2010 GMC W\-SERIES
- 2010 to 2020 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 2020 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

- [26V289000](/recalls/nhtsa/26V289000.md), 2026-05-07: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\)
- [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
- [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
- [2020520](/recalls/tc/2020520.md), 2020-10-29: Powertrain
- [20V668000](/recalls/nhtsa/20V668000.md), 2020-10-29: POWER TRAIN:AUTOMATIC TRANSMISSION
- [2020505](/recalls/tc/2020505.md), 2020-10-23: Powertrain

## Other bulletins for the same vehicles and component

- [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.
- [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.
- [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.
- [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.
- [N242480631\-02](/bulletins/11018568.md), 2025-05-27, 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. This special coverage covers vehicles that return after TCM Update Product Safety N242480630 and have P0747 condition described above for a period of 15 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 March 6, 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 March 6, 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 install a new control valve body. The repairs will be made at no charge to the customer.
- [N242480631\-01](/bulletins/11018535.md), 2025-05-22, 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. This special coverage covers vehicles that return after TCM Update Product Safety N242480630 and have P0747 condition described above for a period of 15 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 March 6, 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 March 6, 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 install a new control valve body. The repairs will be made at no charge to the customer.
- [23\-NA\-185](/bulletins/11017255.md), 2025-04-28, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM; STEERING. This service bulletin helps diagnose/reduce possible CCND issues on Transfer Cases \- Service 4WD on DIC, Intermittent Failures, Noise Concerns, Driveline/Steering Vibration/Shudder, Intermittent DTCs/MIL Illuminated, Engagement/Disengagement/Ratcheting Concerns.
- [23\-NA\-156](/bulletins/11017254.md), 2025-04-28, Service bulletin: POWER TRAIN. This service bulletin informs the technician on the running changes to the M1L, M1M and MLH automatic transmission.
- [19\-NA\-200](/bulletins/11016943.md), 2025-04-10, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN. This service bulletin provides a repair procedure to correct a customer concern of start/stop inoperative, MIL illuminated w/DTC P2797.

JSON: [/v1/bulletins/10168212](/v1/bulletins/10168212)

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