Service bulletin 21-NA-169
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 | 10241856 |
| Published by NHTSA | 2023-09-06 |
| Manufacturer's number | 21-NA-169 |
| Manufacturer's date | 2023-08-02 |
| NHTSA component | POWER TRAIN; POWER TRAIN:AUTOMATIC TRANSMISSION |
NHTSA's summary
This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves.
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
Transmission and driveline, Automatic transmission
| BUICK ENCORE GX | 2024 |
|---|---|
| BUICK ENVISION | 2021, 2022, 2023, 2024 |
| CADILLAC XT4 | 2021, 2022, 2023, 2024 |
| CADILLAC XT5 | 2021, 2022, 2023, 2024 |
| CADILLAC XT6 | 2021, 2022, 2023, 2024 |
| CHEVROLET BLAZER | 2021, 2022, 2023, 2024 |
| CHEVROLET MALIBU | 2021, 2022, 2023 |
| CHEVROLET TRAILBLAZER | 2021, 2022, 2023, 2024 |
| GMC ACADIA | 2021, 2022, 2023 |
| GMC TERRAIN | 2021, 2022, 2023, 2024 |
| GMC TERRAIN NA | 2022 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 23V172000 | 2023-03-16. 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.
| PIP5944 | 2023-12-04. Service bulletin. This Preliminary Information communication advises the technician to determine if the incorrect part number TCM has been installed causing DTC P30D9 to set |
|---|---|
| PIT6048 | 2023-09-18. Service bulletin. This Preliminary information communicates to dealership technicians and customers that engineering is aware of this and will be corrected with a new radio update in the future when released. |
| 20-NA-136 | 2023-09-06. Service bulletin. This informational bulletin describes/outlines the process for the 9T65 Automatic Transmission Replacement Pilot Program (U.S. Only). |
| 17-NA-066 | 2023-07-25. Service bulletin. This service bulletin provides information for automatic transmission Oil Cooler Flush and flow test. |
| PIP5621C | 2022-10-17. Service bulletin. 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. |
| PIT5847E | 2022-08-15. Service bulletin. This Preliminary information communicates that a vehicle may come into the dealer with various concerns which may include a service engine light or various warning messages on the DIC. The technician is instructed to inspect a wiring harness for chaffing on a bracket which is located beneath the battery tray, at a transmission stud and at the transmission oil cooler line bracket. If damage to the harness is found the technician is instructed to repair the damaged wiring and secure the harness away from the bracket so that future damage to the harness will be eliminated. |
| 22-NA-107 | 2022-06-04. Service bulletin. This service bulletin provides repair information to correct a customer concern of a Service AWD Message in DIC at Ignition On with DTC C056D Set. |
| PIP5819A | 2022-01-24. Service bulletin. This Preliminary information communicates inspection and/or needed repairs for DTC P2714 on a VT40 CVT transmission |
| 21NA220 | 2021-12-27. Service bulletin. This service bulletin provides a procedure to inspect and possibly repair terminals that may be damaged to correct customer concerns of Loss of Power, Malfunction Indicator Lamp (MIL) Illuminated, Gauges Inoperative and/or Multiple Warning Lights/Messages Displayed on Driver Information Center (DIC). |
| 21NA169 | 2021-12-27. Service bulletin. This service bulletin provides diagnostic information/procedures to aid the service technician in diagnosing 9T45/50/60 automatic transmissions with low mileage and DTCs current or history related to the control solenoids and valves. |