# Service bulletin 18089 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: 10143684 - Published by NHTSA: 2018\-08\-20 - Manufacturer's number: 18089 - Manufacturer's date: 2018\-05\-03 - NHTSA component: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN; ELECTRICAL SYSTEM ## NHTSA's summary 18089 \- Service Update. On certain vehicles equipped with CVT Transmission \(RPO MR8\), the transmission control module \(TCM\) does not illuminate the MIL, and does not set the code P0603 \(control module long term memory fault\), when a memory checksum error identifies there is a malfunction of the Battery Independent Non\-Volatile Dynamic Memory \(BINVDM\). This memory is used to store permanent DTC?s and data used to adapt transmission performance to the unique characteristics of the transmissions. Note: The reason for this software change is not due to incidents of BINVDM malfunctions; rather, it is to ensure that the MIL is illuminated if such malfunctions do occur. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143684-9999.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10143684-0001.pdf) The document is the manufacturer's. This site does not hold it. ## Components Electrical system, Transmission and driveline, Automatic transmission, Transmission control module ## Trouble codes named P0603 ## Vehicles listed - 2016 to 2018 CHEVROLET SPARK ## Other bulletins for the same vehicles and component - [17\-NA\-066](/bulletins/10239647.md), 2023-07-25, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test. - [PIP5621C](/bulletins/10224285.md), 2022-10-17, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN. This Preliminary information communicates to the dealer technician that TAC recommends the utilization of the GDS2 software to aid in diagnosing automatic transmission concerns. TAC is requesting the GDS2 session logs be sent in before the dealer contacts TAC. - [06\-00\-89\-031D](/bulletins/10201098.md), 2021-09-07, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification - [990420002L](/bulletins/10200154.md), 2021-08-09, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; POWER TRAIN:AUTOMATIC TRANSMISSION; EQUIPMENT. This service bulletin provides information on Driveline Clunk Noise and what is acceptable and what is considered normal operation. - [06\-00\-89\-031D](/bulletins/10190503.md), 2021-04-20, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification - [16\-NA\-175](/bulletins/10190229.md), 2021-04-13, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:GEARS; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. SHAKE AND/OR SHUDDER DURING LIGHT THROTTLE ACCELERATION BETWEEN 40 AND 128 KM/H \(25 AND 80 MPH\) AT A STEADY STATE. - [150089004C](/bulletins/10188403.md), 2021-03-08, Service bulletin: SUSPENSION:FRONT:MACPHERSON STRUT; SUSPENSION:FRONT:SHOCK ABSORBER; POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT. This service bulletin provides technicians with updated information to help identify the differences between what is considered a fluid leak, and what is considered fluid seepage. - [060089031F](/bulletins/10184501.md), 2020-12-21, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This service bulletin provides information on OEM and Remanufactured Engine and Automatic Transmission/Transaxle Identification. - [1308116001F](/bulletins/10183782.md), 2020-12-07, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION. The intent of this technical bulletin is to identify aftermarket ALDL or DLC interface devices as potential sources for causing multiple customer concerns that do not have other diagnostic methods to identify them. - [080730026F](/bulletins/10165123.md), 2019-09-23, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto\-start feature, if equipped. JSON: [/v1/bulletins/10143684](/v1/bulletins/10143684) [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%2018089&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10143684&vehicle=Service%20bulletin%2018089)