# Service bulletin PIT5985G

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: 11011885
- Published by NHTSA: 2024\-12\-17
- Manufacturer's number: PIT5985G
- Manufacturer's date: 2024\-12\-14
- NHTSA component: ELECTRICAL SYSTEM; UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM

## NHTSA's summary

This Preliminary information communicates diagnostic tips on how to resolve a issues with vehicles that will not power up after a can bus 2 issue, lightning strike, or a failed over the air update.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011885-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11011885-9999.pdf)

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

## Components

Electrical system, Fuel system

## Vehicles listed

- 2022 BRIGHTDROP EV600
- 2024 BRIGHTDROP ZEVO 400
- 2023 to 2024 BRIGHTDROP ZEVO 600
- 2021 to 2025 BUICK ENVISION
- 2020 to 2025 CADILLAC CT4
- 2020 to 2025 CADILLAC CT5
- 2021 to 2024 CADILLAC ESCALADE
- 2021 to 2024 CADILLAC ESCALADE ESV
- 2023 to 2025 CADILLAC LYRIQ
- 2025 CADILLAC XT4
- 2024 to 2025 CHEVROLET BLAZER EV
- 2025 CHEVROLET BRIGHTDROP 400
- 2025 CHEVROLET BRIGHTDROP 600
- 2023 to 2025 CHEVROLET COLORADO
- 2020 to 2025 CHEVROLET CORVETTE
- 2024 CHEVROLET CORVETTE E\-RAY
- 2025 CHEVROLET EQUINOX
- 2024 to 2025 CHEVROLET EQUINOX EV
- 2022 to 2025 CHEVROLET SILVERADO 1500
- 2025 CHEVROLET SILVERADO 2500
- 2025 CHEVROLET SILVERADO 3500
- 2021 to 2025 CHEVROLET SUBURBAN 1500
- 2021 to 2025 CHEVROLET TAHOE
- 2024 to 2025 CHEVROLET TRAVERSE
- 2024 GMC ACADIA
- 2023 to 2024 GMC CANYON
- 2022 to 2025 GMC HUMMER EV PICKUP
- 2022 to 2025 GMC SIERRA 1500
- 2025 GMC SIERRA 2500
- 2025 GMC SIERRA 3500
- 2025 GMC TERRAIN
- 2021 to 2025 GMC YUKON
- 2021 to 2025 GMC YUKON XL

## Recalls for the same vehicles and component

- [26V494000](/recalls/nhtsa/26V494000.md), 2026-07-30: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [26V129000](/recalls/nhtsa/26V129000.md), 2026-03-05: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE
- [25V619000](/recalls/nhtsa/25V619000.md), 2025-09-18: FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
- [2025429](/recalls/tc/2025429.md), 2025-08-21: Fuel System
- [25V536000](/recalls/nhtsa/25V536000.md), 2025-08-21: FUEL SYSTEM, GASOLINE
- [25V483000](/recalls/nhtsa/25V483000.md), 2025-07-24: ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
- [25V356000](/recalls/nhtsa/25V356000.md), 2025-05-29: ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO \(TOUCH\)SCREEN/MONITOR/UNIT
- [24V937000](/recalls/nhtsa/24V937000.md), 2024-12-18: FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
- [24V925000](/recalls/nhtsa/24V925000.md), 2024-12-12: FORWARD COLLISION AVOIDANCE: WARNINGS:EXTERNAL/PEDESTRIAN ALERT; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM
- [2024375](/recalls/tc/2024375.md), 2024-06-28: Fuel System

## Other bulletins for the same vehicles and component

- [N252514001](/bulletins/11037980.md), 2026-10-05, Service campaign: ELECTRICAL SYSTEM. Service Update. Certain vehicles listed above may enable the new King Crab Feature through OTA programming or programming at the dealer. Dealers will perform a comprehensive software update. Owners who have accepted applicable terms and conditions will have the opportunity to accept these software changes using wireless over\-the\-air \(OTA\) technology without having to bring their vehicle to a dealership. Alternatively, owners may have their vehicle serviced at a GM dealer to receive these software updates.
- [N262558690\-02](/bulletins/11037460.md), 2026-09-23, Service campaign: FUEL/PROPULSION SYSTEM. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
- [N262558690](/bulletins/11037321.md), 2026-09-16, Service campaign: FUEL/PROPULSION SYSTEM. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
- [N242452131\-02](/bulletins/11037312.md), 2026-09-15, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall involving certain 2023\-2024 model year Chevrolet Colorado / Silverado 1500 and GMC Canyon / Sierra 1500 vehicles equipped with a 2.7L engine \(RPO L3B\). The Engine Control Module \(ECM\) may not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
- [N262558690\-01](/bulletins/11036648.md), 2026-09-02, Emissions: FUEL/PROPULSION SYSTEM. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
- [N262558690\-01](/bulletins/11036143.md), 2026-08-12, Service campaign: FUEL/PROPULSION SYSTEM. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module.
- [N242452130\-01](/bulletins/11035685.md), 2026-08-04, Service campaign: FUEL/PROPULSION SYSTEM. Certain vehicles may have a condition in which the Engine Control Module \(ECM\) does not sufficiently control fuel injector flow rate under certain driving conditions. Dealers are to reprogram the ECM.
- [661.40](/bulletins/11033006.md), 2026-05-29, Over\-the\-air update: UNKNOWN OR OTHER; FUEL/PROPULSION SYSTEM. • Improvements to diagnostics and service messaging for battery health, particularly in humid conditions. • Improvements to transmission diagnostics used for shifting. • Improvements to charging system diagnostics. • Fixes to help protect EV adapter from overheating while charging. • Reduces unnecessary service messages, check engine light activations, and OnStar calls from your vehicle.
- [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.
- [N262546590](/bulletins/11030466.md), 2026-04-01, Service campaign: FUEL/PROPULSION SYSTEM. Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This special coverage covers the condition described above for a period of 5 years or 60,000 miles \(100,000 km\), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after April 1, 2026, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to April 1, 2026, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage \(“Customers”\) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to remove the inlet hose and replace the seal. The repairs will be made at no charge to the customer.

JSON: [/v1/bulletins/11011885](/v1/bulletins/11011885)

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