# Service bulletin 19\-NA\-256

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: 10246483
- Published by NHTSA: 2023\-12\-09
- Manufacturer's number: 19\-NA\-256
- Manufacturer's date: 2023\-11\-29
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This service bulletin provides diagnostic aid information/procedures to perform inspections to determine if the engine needs to be replaced as opposed to just internal parts for knocking, rattle, squeak and/or squeal type noises from engine.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10246483-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10246483-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2019 to 2024 CHEVROLET BLAZER
- 2010 to 2024 CHEVROLET CAMARO
- 2012 to 2013 CHEVROLET CAPRICE POLICE PURSUIT
- 2012 to 2014 CHEVROLET CAPTIVA SPORT
- 2015 to 2022 CHEVROLET COLORADO
- 2008 to 2017 CHEVROLET EQUINOX
- 2012 to 2020 CHEVROLET IMPALA
- 2008 to 2012 CHEVROLET MALIBU
- 2009 to 2024 CHEVROLET TRAVERSE
- 2007 to 2024 GMC ACADIA
- 2015 to 2022 GMC CANYON
- 2010 to 2017 GMC TERRAIN
- 2008 to 2010 PONTIAC G6
- 2008 to 2009 PONTIAC G8
- 2008 to 2009 PONTIAC TORRENT
- 2007 to 2009 SATURN AURA
- 2007 to 2010 SATURN OUTLOOK
- 2008 to 2010 SATURN VUE

## Other bulletins for the same vehicles and component

- [N262570770\-03](/bulletins/11038560.md), 2026-10-16, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
- [N262570770\-02](/bulletins/11037486.md), 2026-09-25, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
- [N262570770\-01](/bulletins/11037367.md), 2026-09-18, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
- [N262570770](/bulletins/11037318.md), 2026-09-15, Service campaign: ENGINE. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator.
- [N262546590\-01](/bulletins/11035019.md), 2026-07-15, Service campaign: ENGINE. Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This special coverage covers the condition described above for a period of 5 years or 60,000 miles \(100,000 km\), 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 July 14, 2026, 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 July 14, 2026, 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 remove the inlet hose and replace the seal. The repairs will be made at no charge to the customer.
- [00\-06\-01\-026R](/bulletins/11026017.md), 2025-12-03, Service bulletin: ENGINE. This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- [25\-NA\-132](/bulletins/11024953.md), 2025-11-05, Service bulletin: ENGINE. This bulletin provides a procedure to verify a noise and replace the oil pump shaft assembly if the gears of the pump and balance shaft are found the issue of the customers concern.
- [24\-NA\-201](/bulletins/11024495.md), 2025-10-27, Service bulletin: ENGINE. This bulletin provides a procedure to replace the oil pump due to a loose drive pump gear not pressed on the pump shaft.
- [23\-NA\-170](/bulletins/11024486.md), 2025-10-25, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This bulletin advises the tech to inspect deeper into what may be to main cause of an engine failure.
- [23\-NA\-153](/bulletins/11024485.md), 2025-10-25, Service bulletin: ENGINE. The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the customer that it is normal for the delay.

JSON: [/v1/bulletins/10246483](/v1/bulletins/10246483)

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