# Service bulletin 23\-NA\-189

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: 10245248
- Published by NHTSA: 2023\-11\-15
- Manufacturer's number: 23\-NA\-189
- Manufacturer's date: 2023\-10\-25
- NHTSA component: ELECTRICAL SYSTEM; EQUIPMENT

## NHTSA's summary

This service bulletin assists technicians in setting up PicoScope hardware/software to monitor CAN bus traffic \(voltage patterns\) to aid Technical Assistance \(TAC\) and Field Service Engineers \(FSEs\) in diagnosing electrical issues present on network communication circuits.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245248-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10245248-9999.pdf)

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

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2023 to 2024 BRIGHTDROP 600 ELCV
- 2022 BRIGHTDROP EV600
- 2023 to 2024 BRIGHTDROP ZEVO 600
- 2020 to 2024 BUICK ENCLAVE
- 2020 to 2022 BUICK ENCORE
- 2023 to 2024 BUICK ENCORE
- 2020 to 2024 BUICK ENCORE GX
- 2020 to 2024 BUICK ENVISION
- 2024 BUICK ENVISTA
- 2020 BUICK LACROSSE
- 2020 BUICK REGAL
- 2020 BUICK REGAL TOURX
- 2020 to 2024 CADILLAC CT4
- 2020 to 2024 CADILLAC CT5
- 2020 CADILLAC CT6
- 2021 CADILLAC CT6
- 2020 to 2024 CADILLAC ESCALADE
- 2020 to 2023 CADILLAC ESCALADE ESV
- 2021 CADILLAC ESCALADE NA
- 2023 to 2024 CADILLAC LYRIQ
- 2020 to 2024 CADILLAC XT4
- 2020 to 2024 CADILLAC XT5
- 2020 to 2024 CADILLAC XT6
- 2020 CADILLAC XTS
- 2024 CADILLAC redundant LYRIQ
- 2020 CHEVROLET 3500
- 2021 CHEVROLET 3500
- 2022 CHEVROLET 3500
- 2024 CHEVROLET 3500HD
- 2020 CHEVROLET 4500
- 2022 CHEVROLET 4500
- 2020 to 2023 CHEVROLET 4500HD
- 2020 to 2022 CHEVROLET 4500XD
- 2020 to 2023 CHEVROLET 5500HD
- 2020 to 2022 CHEVROLET 5500XD
- 2019 CHEVROLET 6500
- 2020 to 2023 CHEVROLET 6500HD
- 2020 to 2024 CHEVROLET BLAZER
- 2024 CHEVROLET BLAZER EV
- 2022 to 2023 CHEVROLET BOLT EUV
- 2020 to 2023 CHEVROLET BOLT EV
- 2024 CHEVROLET BOLT EV
- 2020 to 2024 CHEVROLET CAMARO
- 2020 to 2024 CHEVROLET COLORADO
- 2020 to 2024 CHEVROLET CORVETTE
- 2020 to 2024 CHEVROLET EQUINOX
- 2024 CHEVROLET EQUINOX EV
- 2020 to 2021 CHEVROLET EXPRESS
- 2023 CHEVROLET EXPRESS 2500
- 2023 CHEVROLET EXPRESS 3500
- 2020 to 2023 CHEVROLET EXPRESS CUTAWAY VAN
- 2020 CHEVROLET IMPALA
- 2020 to 2024 CHEVROLET MALIBU
- 2020 to 2024 CHEVROLET SILVERADO 1500
- 2020 to 2024 CHEVROLET SILVERADO 2500
- 2020 to 2024 CHEVROLET SILVERADO 3500
- 2020 to 2023 CHEVROLET SILVERADO 4500
- 2019 to 2021 CHEVROLET SILVERADO 5500
- 2023 CHEVROLET SILVERADO 5500
- 2021 to 2023 CHEVROLET SILVERADO 6500
- 2024 CHEVROLET SILVERADO EV
- 2020 CHEVROLET SONIC
- 2020 to 2022 CHEVROLET SPARK
- 2020 to 2024 CHEVROLET SUBURBAN
- 2021 to 2023 CHEVROLET SUBURBAN 1500
- 2020 to 2024 CHEVROLET TAHOE
- 2020 CHEVROLET TRAILBLAZER
- 2021 to 2024 CHEVROLET TRAILBLAZER
- 2020 to 2024 CHEVROLET TRAVERSE
- 2020 to 2024 CHEVROLET TRAX
- 2024 GMC 3500HD
- 2020 to 2024 GMC ACADIA
- 2020 to 2024 GMC CANYON
- 2022 to 2024 GMC HUMMER EV PICKUP
- 2024 GMC HUMMER EV SUV
- 2020 to 2024 GMC SAVANA
- 2023 GMC SAVANA 2500
- 2023 GMC SAVANA 3500
- 2020 to 2024 GMC SIERRA 1500
- 2020 to 2024 GMC SIERRA 2500
- 2020 to 2024 GMC SIERRA 3500
- 2020 GMC SIERRA DENALI
- 2020 to 2024 GMC TERRAIN
- 2022 GMC TERRAIN NA
- 2020 to 2023 GMC YUKON
- 2020 to 2024 GMC YUKON XL
- 2023 GMC YUKON XL 1500

## Recalls for the same vehicles and component

- [25V876000](/recalls/nhtsa/25V876000.md), 2025-12-17: EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
- [24V575000](/recalls/nhtsa/24V575000.md), 2024-08-01: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- [24V320000](/recalls/nhtsa/24V320000.md), 2024-05-09: ELECTRICAL SYSTEM:PROPULSION SYSTEM; ELECTRICAL SYSTEM:WIRING
- [24V133000](/recalls/nhtsa/24V133000.md), 2024-02-22: ELECTRICAL SYSTEM:ADAS:DRIVER MONITORING:CAMERA/SENSOR; FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
- [23V744000](/recalls/nhtsa/23V744000.md), 2023-11-06: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
- [2023210](/recalls/tc/2023210.md), 2023-04-06: Electrical
- [23V247000](/recalls/nhtsa/23V247000.md), 2023-04-06: ELECTRICAL SYSTEM:WIRING
- [22V708000](/recalls/nhtsa/22V708000.md), 2022-09-22: EQUIPMENT:OTHER:LABELS
- [2022160](/recalls/tc/2022160.md), 2022-03-31: Accessories
- [21V497000](/recalls/nhtsa/21V497000.md), 2021-07-01: EQUIPMENT:OTHER:LABELS

## Other bulletins for the same vehicles and component

- [N242468490\-02](/bulletins/11032963.md), 2026-05-28, Service campaign: ELECTRICAL SYSTEM. Certain vehicles may have missing cavity plugs from the rear chassis harness electrical connector. Dealers are to inspect the rear chassis harness and replace missing harness plugs as necessary.
- [N252529080](/bulletins/11030439.md), 2026-04-01, Service campaign: ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may be missing a high voltage header plug on the RESS battery pack drive motor connector. Dealers are to inspect the RESS pack connectors and install the proper HV Header Plug if missing.
- [PIE0831A](/bulletins/11030340.md), 2026-03-31, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This engineering information \(EI\) closure ends the need for gathering further information from technicians in regard to the Malfunction Indicator Lamp \(MIL\) illuminated on Driver Information Center \(DIC\), DTC P0299 Set.
- [PIE0829A](/bulletins/11030339.md), 2026-03-31, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. This engineering information \(EI\) closure ends the need for gathering further information from technicians in regard to the liftgate not opening and/or partially opening.
- [N252515590](/bulletins/11027795.md), 2026-01-27, Service campaign: ELECTRICAL SYSTEM. Certain vehicles listed above, may have a condition in which the body\-to\-chassis ground strap may be corroded. Dealers will replace the ground strap.
- [24\-NA\-272](/bulletins/11026032.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM; BACK OVER PREVENTION: WARNINGS. This technical bulletin provides repair information to correct a customer concern of Park Assist False Alerts on Z71 Traverse.
- [24\-NA\-166](/bulletins/11025974.md), 2025-12-02, Service bulletin: WHEELS; ELECTRICAL SYSTEM. This technical bulletin provides repair information to correct a customer concern of DTC C1171 C1172 C1173 C1174 Tire Pressure Monitor Sensor Unable to Relearn Ethernet Cable Overlay for TCP OnStar Module.
- [25\-NA\-061](/bulletins/11025554.md), 2025-11-15, Service bulletin: ELECTRICAL SYSTEM; STRUCTURE:BODY. This technical bulletin provides a procedure to correct the condition of Driver or Passenger Rear Door Handle Will Not Fold In.
- [23\-NA\-107](/bulletins/11025551.md), 2025-11-15, Service bulletin: STRUCTURE:BODY; ELECTRICAL SYSTEM. This service bulletin provides a procedure to correct customer concerns of Roof Related Water Leak, Shifter Light Inoperative, Key Fob Inoperative and/or Various Remote Control Door Lock Receiver \(RCDLR\) Concerns.
- [25\-NA\-119](/bulletins/11024500.md), 2025-10-27, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM. This service bulletin provides information on the Service Safety Restraint Message displayed on the DIC Airbag malfunction indicator illuminated.

JSON: [/v1/bulletins/10245248](/v1/bulletins/10245248)

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