# Service bulletin PIT5777

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: 10181149
- Published by NHTSA: 2020\-10\-19
- Manufacturer's number: PIT5777
- Manufacturer's date: 2020\-09\-18
- NHTSA component: EXTERIOR LIGHTING

## NHTSA's summary

This Preliminary information communicates an issue with a Check Reverse Lamp message on the DIC, but the reverse light operate. Engineering working on a fix.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181149-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181149-9999.pdf)

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

## Components

Lighting

## Vehicles listed

- 2021 CHEVROLET SUBURBAN
- 2021 CHEVROLET TAHOE

## Recalls for the same vehicles and component

- [2024060](/recalls/tc/2024060.md), 2024-02-01: Lights And Instruments
- [2023472](/recalls/tc/2023472.md), 2023-08-24: Lights And Instruments
- [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

## Other bulletins for the same vehicles and component

- [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.
- [01\-08\-42\-001Q](/bulletins/11014170.md), 2025-02-11, Service bulletin: EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- [22\-NA\-244](/bulletins/11000550.md), 2024-05-30, Warranty extension: ELECTRICAL SYSTEM; EXTERIOR LIGHTING; STRUCTURE:BODY; UNKNOWN OR OTHER; SERVICE BRAKES. This service bulletin provides information about GM Accessories \- Dealer\-Installed, Repaired or Replaced During Warranty Coverage Period.
- [PIT5989A](/bulletins/10251725.md), 2024-03-18, Service bulletin: EXTERIOR LIGHTING; ELECTRICAL SYSTEM. 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.
- [02\-08\-42\-001J](/bulletins/10249011.md), 2024-01-19, Service bulletin: EXTERIOR LIGHTING. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
- [21\-NA\-135](/bulletins/10245559.md), 2023-11-29, Service bulletin: ENGINE AND ENGINE COOLING; EQUIPMENT; EXTERIOR LIGHTING; ELECTRICAL SYSTEM. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
- [N232408730](/bulletins/10245392.md), 2023-11-22, Service bulletin: ELECTRICAL SYSTEM; EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS. Service Update. Certain Vehicles may not have the emergency light flashers enabled. Dealers are to reprogram the body control module and lighting control module.
- [21\-NA\-166](/bulletins/10242936.md), 2023-09-29, Service bulletin: ELECTRICAL SYSTEM; EXTERIOR LIGHTING:TURN SIGNAL; EQUIPMENT. This informational bulletin provides information on the turn signal stalk not cancelling and/or mis cancelling.
- [01\-08\-42\-001P](/bulletins/10236041.md), 2023-05-09, Service bulletin: EXTERIOR LIGHTING. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
- [01\-08\-42\-001O](/bulletins/10232136.md), 2023-02-28, Service bulletin: EXTERIOR LIGHTING. This service bulletin provides information for dealers/technicians on Exterior Lamp Condensation and Water Leaks and Replacement Guidelines.

JSON: [/v1/bulletins/10181149](/v1/bulletins/10181149)

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