How many open recall and software campaigns currently apply to VIN [VIN], including any cross-platform Ultium campaigns?

Request this answer in writing from the service advisor before authorizing repair work. The full playbook covers documentation procedures and post-service verification steps.

What software versions are currently installed on the relevant modules, and which versions correspond to the closed remedies for each open campaign?

Request this answer in writing from the service advisor before authorizing repair work. The full playbook covers documentation procedures and post-service verification steps.

If the issue involves the Multi-Flex midgate, four-wheel steering, or Wide Open Watts mode, is the diagnostic procedure specific to those features?

Request this answer in writing from the service advisor before authorizing repair work. The full playbook covers documentation procedures and post-service verification steps.

Is each remedy delivered via OTA, dealer-side flash, or hardware adjustment?

Request this answer in writing from the service advisor before authorizing repair work. The full playbook covers documentation procedures and post-service verification steps.

Will all open campaigns be addressed in a single visit, or are sequential visits required?

Request this answer in writing from the service advisor before authorizing repair work. The full playbook covers documentation procedures and post-service verification steps.

app / playbooks / Chevrolet Silverado EV — software update issue

elevated severity software update issue 2024—2025 dealer

Chevrolet Silverado EV software update issue (2024—2025)

Chevrolet Silverado EV · 2024—2025 · all trims

Diagnostic code reference

Reading codes off a Chevrolet Silverado EV service invoice? Look them up in our OBD-II DTC database →

Reported symptoms

Infotainment screen freezes, reboots unexpectedly, or becomes unresponsive during driving
DC fast charging session refuses to initiate, terminates early, or sustains charge rate well below specification (Silverado EV supports up to 350 kW (kilowatt, a unit of power) on 800V architecture)
Multi-Flex midgate fails to operate, latch correctly, or seal against weather
Four-wheel steering inactive, intermittent, or behaving inconsistently
Wide Open Watts (performance) mode fails to engage or behaves inconsistently
Backup camera, surround-view camera, or trailer camera image fails to display or appears distorted

Questions to ask

Pose these to the service advisor at intake. Request answers in writing or via email.

How many open recall and software campaigns currently apply to VIN (Vehicle Identification Number) [VIN], including any cross-platform Ultium campaigns?
What software versions are currently installed on the relevant modules, and which versions correspond to the closed remedies for each open campaign?
If the issue involves the Multi-Flex midgate, four-wheel steering, or Wide Open Watts mode, is the diagnostic procedure specific to those features?
Is each remedy delivered via OTA (Over-the-Air software update), dealer-side flash, or hardware adjustment?
Will all open campaigns be addressed in a single visit, or are sequential visits required?
If the vehicle is fleet-registered or has multiple authorized drivers, how will the service record be associated with the correct ownership account?

Documents to request

Each item should be received in writing before authorizing repair work.

Diagnostic report listing all stored, pending, and historical fault codes from the affected modules
Repair order with technician notes, including a list of every recall and campaign reference number addressed during the visit
Written confirmation of software versions installed before and after the visit on each affected module
Written confirmation of which campaigns are now closed for VIN [VIN] following the visit
Documentation of any feature-specific procedures applied (Multi-Flex midgate, four-wheel steering, Wide Open Watts)

Pre-service evidence

Capture before drop-off. Once the vehicle leaves your possession, proving prior condition becomes significantly harder.

Screenshot or video-record any infotainment, display, midgate, or driver-assist defects at the time they occur
Note specific incidents — system reboots, charging failures, midgate cycling, ambient and load conditions — with dates
Save all GM correspondence regarding software updates, recalls, or feature delivery timelines
Screenshot the myChevrolet app status pages over time, showing any reported errors
If the vehicle is used for towing, note towing conditions and any related defect modes (range under load, charging behavior with trailer)
Note odometer reading at drop-off and at pickup

Service advisor interaction

Operational notes specific to the conversation at the service desk.

Record the full name of the service advisor and the technician performing the work
Multi-campaign software situations are particularly susceptible to incomplete documentation. A general 'software updated' note without enumerated campaign references creates ambiguity about which specific campaigns are closed.
Silverado EV-specific features (Multi-Flex midgate, four-wheel steering, Wide Open Watts) require specialized diagnostic procedures. Generic Silverado service procedures developed for ICE Silverados may not apply to the EV variant.
Fleet vehicles can have service interactions that span multiple authorized drivers and multiple service centers. Documentation discipline is operationally important — verify each visit's record is correctly associated with the vehicle and ownership account

Repair authorization

Cautions before signing.

Recall and software campaign work is performed at no charge to the owner; do not authorize any charge for parts or labor associated with these campaigns
If a diagnostic fee is presented for issues the dealer characterizes as unrelated to the open campaigns, request written documentation distinguishing campaign-related and unrelated faults before authorization
If high-voltage component replacement is quoted, request written warranty classification before signing the repair authorization
Repair authorization signatures often include language permitting additional related work — read the document and decline blanket additional work in advance

Post-service verification

Complete before leaving the service location. Issues that surface after departure are operationally harder to attribute to the visit.

Verify the infotainment system functions normally without unexpected freezes or reboots during a short test drive
Conduct a verified DC fast charging session at an 800V-capable CCS fast charger before traveling more than a short distance from the dealership
Test Multi-Flex midgate cycling and sealing under representative conditions
Test four-wheel steering at low-speed maneuvering and high-speed cornering, if relevant to the service
Verify all camera systems display correctly under normal conditions
Confirm the repair order matches the work performed and references the correct campaigns

Email templates

Documentation-focused templates for service correspondence. Tap copy to use. Subject and body are kept verbatim — paste them as-is into your email client.

pre-service inquiry

to: dealer service

Service inquiry — Silverado EV software, request for written campaign list

Service Department, I am scheduling my [YEAR] Chevrolet Silverado EV, VIN [VIN], for service related to software-based recall campaigns. Before the visit, I am requesting written confirmation of the following: 1. A list of every open recall and service campaign currently applying to VIN [VIN], including the campaign reference number and any cross-platform Ultium campaigns originally issued under other GM brands. 2. If the issue involves Silverado EV-specific features (Multi-Flex midgate, four-wheel steering, Wide Open Watts mode), the technician's familiarity with those subsystems. 3. Whether all open campaigns can be addressed in a single visit, or whether sequential visits are required. 4. The fee structure, including any diagnostic charges and conditions under which they apply. Please reply to this email so the planned scope is on record. Thank you, [NAME]

documentation request

to: dealer service

Documentation request — Silverado EV service on [DATE], VIN [VIN]

Service Department, Following the service performed on [DATE] for VIN [VIN], I am requesting the following documents for my ownership records: 1. The full diagnostic report including all stored, pending, and historical fault codes. 2. The repair order listing every campaign reference number addressed during this visit, including any cross-platform Ultium references. 3. Written confirmation of which campaigns are now closed for this VIN and which remain open. 4. Written confirmation of the software versions installed on each affected module before and after the visit. 5. Documentation of any feature-specific procedures applied (Multi-Flex midgate, four-wheel steering, Wide Open Watts). These documents form part of the vehicle's service record and are operationally important. Please reply to this email at your convenience. Thank you, [NAME]

Warranty notes

Chevrolet has issued recalls and service campaigns affecting the Silverado EV during the early production period, including cross-platform Ultium campaigns. The applicable campaigns for VIN [VIN] should be checked at every service visit.
Silverado EV components are covered under Chevrolet's New Vehicle Limited Warranty and the high-voltage battery component warranty (8 years / 100,000 miles in most US markets). Coverage period and conditions should be confirmed in writing.
Multi-Flex midgate, four-wheel steering, and Wide Open Watts components are covered under the basic warranty during the warranty period; warranty determination for these distinctive components should be confirmed in writing on a per-component basis.
Recall remedies are performed at no charge to the owner regardless of vehicle age, mileage, or warranty status.

Observational patterns

The Silverado EV is built on GM's Ultium platform, sharing architecture with multiple Ultium vehicles across Chevrolet, GMC, Cadillac, Honda, and Acura brands. Cross-platform campaign coverage is operationally relevant — campaigns issued under any brand may apply to the Silverado EV depending on the specific defect.

Distinctive Silverado EV features (Multi-Flex midgate, four-wheel steering, Wide Open Watts, 800V architecture) introduce diagnostic complexity beyond what is typical for ICE Silverado service. Technicians experienced with traditional Silverado may have limited familiarity with the EV-specific subsystems.

Work-truck and fleet positioning produces service patterns distinct from recreational EV pickups: longer service intervals, fleet-managed scheduling, multiple-driver use, and trailer-towing service contexts. Documentation discipline is operationally relevant under these conditions.

OTA delivery does not always produce a corresponding entry in the dealer-side service record. The closure of a recall delivered over the air requires explicit documentation through the dealer system.

Linked recalls

gm-ultium-fmvss-101-111-305

This playbook covers

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