# Service bulletin PIT5989A

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: 10251725
- Published by NHTSA: 2024\-03\-18
- Manufacturer's number: PIT5989A
- Manufacturer's date: 2024\-02\-29
- NHTSA component: EXTERIOR LIGHTING; ELECTRICAL SYSTEM

## NHTSA's summary

This Preliminary information communicates a issue where the Can bus 1 data line is being corrupted by a aftermarket lighting module or poor connection installed by a Police Upfitter.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251725-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-10251725-9999.pdf)

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

## Components

Electrical system, Lighting

## Vehicles listed

- 2021 to 2024 CHEVROLET TAHOE

## Recalls for the same vehicles and component

- [2024519](/recalls/tc/2024519.md), 2024-09-12: Lights And Instruments
- [2024060](/recalls/tc/2024060.md), 2024-02-01: Lights And Instruments
- [2023472](/recalls/tc/2023472.md), 2023-08-24: Lights And Instruments
- [2022700](/recalls/tc/2022700.md), 2022-12-08: Lights And Instruments
- [22V903000](/recalls/nhtsa/22V903000.md), 2022-12-08: EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
- [2022634](/recalls/tc/2022634.md), 2022-11-03: Lights And Instruments
- [22V827000](/recalls/nhtsa/22V827000.md), 2022-11-03: EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
- [21V421000](/recalls/nhtsa/21V421000.md), 2021-06-10: AIR BAGS:SRS MALFUNCTION WARNING LAMP/LIGHT; ELECTRICAL SYSTEM:SOFTWARE

## Other bulletins for the same vehicles and component

- [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.
- [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.
- [25\-NA\-101](/bulletins/11019755.md), 2025-06-26, Service bulletin: AIR BAGS; ELECTRICAL SYSTEM; SEATS. This service bulletin provides information on the restraint warning lamp being illuminated and the correction to this by replacing the passenger presence module.
- [22\-NA\-242](/bulletins/11019545.md), 2025-06-16, Service bulletin: ELECTRICAL SYSTEM. This warranty administration bulletin provides information for dealers/technicians on System Reset and Connector Reconnect Labor Code Numbers.
- [25\-NA\-095](/bulletins/11019465.md), 2025-06-11, Service bulletin: FUEL/PROPULSION SYSTEM; ELECTRICAL SYSTEM; ENGINE. This bulletin provides information of possible fuel injector harness electrical connector terminal having low tension creating the customers concern of a MIL Illuminated with Multiple Circuit DTCs set.
- [21\-NA\-166](/bulletins/11019325.md), 2025-06-06, Service bulletin: EXTERIOR LIGHTING; STEERING. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
- [25\-NA\-093](/bulletins/11019314.md), 2025-06-06, Service bulletin: ELECTRICAL SYSTEM; ENGINE. This technical service bulletin provides information on the SES light illuminated due to software anomalies and the correction to reprogram the engine control module.
- [24\-NA\-229](/bulletins/11019017.md), 2025-06-03, Service bulletin: ELECTRICAL SYSTEM. This bulletin provides a procedure on how to check for a battery drain utilizing the Picoscope and how to measure the load on the system that may be causing a drain.
- [25\-NA\-087](/bulletins/11017595.md), 2025-05-02, Service bulletin: ELECTRICAL SYSTEM. This service bulletin provides information on the proper Reflective High Temperature Heat and/or Insulating Tape to use for certain repairs, such as Wiring Harness Repairs.
- [25\-NA\-077](/bulletins/11017307.md), 2025-04-29, Service bulletin: SEATS; ELECTRICAL SYSTEM. Some customers may comment that they do not see any apps on their rear seat infotainment system.

JSON: [/v1/bulletins/10251725](/v1/bulletins/10251725)

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