How many open recall campaigns currently apply to VIN [VIN], and which display, infotainment, or assist-system functions does each address?

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.

Can all open recalls 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.

Are any of the recalls being delivered as over-the-air updates, and if so, has VIN [VIN] received them?

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 the repair order list each recall campaign reference number applied during the visit and confirm closure for each?

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 / Cadillac Lyriq — software update issue

elevated severity software update issue 2023—2024 dealer

Cadillac Lyriq software update issue (2023—2024)

Cadillac Lyriq · 2023—2024 · all trims

Diagnostic code reference

Reading codes off a Cadillac Lyriq service invoice? Look them up in our OBD-II DTC database →

Reported symptoms

Infotainment screen blank, unresponsive, or rebooting unexpectedly
Backup camera image fails to display, displays late, or appears distorted
Driver-information display flickering, partially blank, or showing intermittent warnings
Hands-free driving features unavailable when expected to be available
Manufacturer correspondence regarding multiple software-related recalls
myCadillac app reports vehicle as offline or shows feature inconsistencies

Questions to ask

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

How many open recall campaigns currently apply to VIN (Vehicle Identification Number) [VIN], and which display, infotainment, or assist-system functions does each address?
What software versions are currently installed on the relevant modules, and which versions correspond to the closed remedies for each open campaign?
Can all open recalls be addressed in a single visit, or are sequential visits required?
Are any of the recalls being delivered as over-the-air updates, and if so, has VIN [VIN] received them?
Will the repair order list each recall campaign reference number applied during the visit and confirm closure for each?
Are there related campaigns affecting other GM Ultium-platform vehicles that should be cross-referenced for this build?

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 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 recalls have been closed for VIN [VIN] following the visit
Schedule of any remaining open campaigns and the expected timeline for their remedy

Pre-service evidence

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

Screenshot or video-record any display, camera, or infotainment defects at the time they occur
Note specific incidents — system reboots, camera display failures, hands-free assist availability — with dates and circumstances
Save all Cadillac and dealer correspondence regarding the recall campaigns
Screenshot the myCadillac app status pages over time, showing any reported errors or feature inconsistencies
Note odometer reading at drop-off and at pickup
If multiple service visits are required, retain documentation from each visit as part of a complete record

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
Multiple open recalls require explicit confirmation of which were addressed during this visit and which remain open. A general 'all software updated' statement does not document which specific campaigns are closed.
Note whether each campaign is classified as a recall, a customer satisfaction program, or a service bulletin — these classifications carry different documentation and warranty implications
If the advisor states that an OTA (Over-the-Air software update) update has been delivered for VIN [VIN] but the vehicle still shows the affected behavior, request written documentation of the diagnostic steps taken before any release

Repair authorization

Cautions before signing.

Recall remedies are performed at no charge to the owner; do not authorize any charge for parts or labor associated with the documented recalls
Cadillac dealers may schedule recall remedies across multiple visits for parts availability or technician scheduling reasons; this is acceptable but should be documented through correspondence retention rather than verbal commitments
If a diagnostic fee is presented for issues the dealer characterizes as unrelated to the open recalls, request written documentation distinguishing recall-related and unrelated faults before 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 screen functions normally, displays correctly during reverse, and does not reboot unexpectedly during a short test drive
Verify the backup camera image displays immediately upon shifting into reverse, with correct orientation
Confirm no warning messages or system errors on the driver-information display after a full ignition cycle
Verify hands-free or driver-assist features are available as expected if the vehicle is so equipped
Confirm the repair order lists each closed recall campaign and any campaigns that remain open
Retain copies of all post-repair documentation, particularly any open-campaign tracking

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 — Lyriq software recalls, request for written campaign list and scope

Service Department, I am scheduling my [YEAR] Cadillac Lyriq, 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 campaign currently applying to VIN [VIN], including the campaign reference number and a brief description of the function addressed by each. 2. Whether all open campaigns can be addressed in a single visit, or whether sequential visits are required, and the reason if the latter. 3. Whether any of the campaigns are being delivered as OTA updates, and if so, whether VIN [VIN] has already received them. 4. The expected duration of the service and any loaner vehicle arrangement. Please reply to this email so the planned scope is on record. Thank you, [NAME]

documentation request

to: dealer service

Documentation request — Lyriq software recall 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 recall campaign reference number addressed during this visit. 3. Written confirmation of which recalls 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. These documents form part of the vehicle's service record and are operationally important across multiple visits. Please reply to this email at your convenience. Thank you, [NAME]

Warranty notes

Cadillac has issued multiple software-related recalls and service campaigns affecting the Lyriq during the early production period. The applicable campaigns for VIN [VIN] should be checked at every service visit.
Software-only remedies do not consume warranty time; the standard New Vehicle Limited Warranty period continues independently of recall remedies.
Recall remedies are performed at no charge to the owner regardless of vehicle age, mileage, or warranty status. A recall remains open until performed.
Repairs performed under goodwill rather than warranty or recall do not extend the warranty period. Confirm in writing which classification applies.

Observational patterns

Multiple-recall situations are particularly susceptible to incomplete documentation. A general 'recall work completed' note without enumerated campaign references creates ambiguity about which specific campaigns were closed.

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, not the OTA install message alone.

Cross-platform software defects across the GM Ultium platform have produced parallel campaigns affecting Hummer EV, Silverado EV, Blazer EV, and other related vehicles. Single-vehicle campaign coverage may not capture all relevant remedies for shared software stacks.

FMVSS (Federal Motor Vehicle Safety Standard)-related recalls (such as those affecting backup camera display) are safety-classified rather than convenience-classified; the regulatory basis affects how the campaign is documented and closed.

Linked recalls

cadillac-lyriq-software-recalls

This playbook covers

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