Cadillac Lyriq & Chevy Blazer EV Brake System Control Module Update
What’s the Problem
General Motors has issued a Customer Satisfaction Program (CSP) tagged N252521980 covering certain 2023-2024 model year vehicles of Cadillac and Chevrolet. Specifically, the affected units are the 2023-24 Cadillac Lyriq and 2024 Chevrolet Blazer EV.
The issue: some vehicles may have a version of the brake system control module (BSCM) software that is not the latest. According to GM, the condition “in which the brake system control module doesn’t have the latest software” may exist.
Dealers are instructed to reprogram the BSCM software; if the software update doesn’t fix the condition, dealers must replace the brake master cylinder and perform a brake fluid change.
Allegations
While this is currently a manufacturer-issued satisfaction program rather than a formal recall, the underlying allegation from a lemon-law perspective is that these electric vehicles may suffer from a defective braking-system control function. If the BSCM software is out-of-date this may lead to potential risks of braking performance degradation, which in turn could impair safe vehicle operation.
From a legal standpoint, owners or lessees of the Lyriq or Blazer EV who experience braking anomalies, warning messages, or other unresolved brake system concerns may have claims under California’s lemon-law statute. If an owner reports the problem multiple times and the manufacturer/seller fails to correct it, the vehicle may qualify as a “lemon.”
Recall/TSB
Rather than a formal recall, GM’s campaign is identified as a Customer Satisfaction Program (CSP) – program number N252521980. It covers:
2023–2024 Cadillac Lyriq
2024 Chevrolet Blazer EV
The program provides that any affected vehicle held in dealer inventory—or a used/CPO/loaner vehicle—must be held and repaired before delivery.
GM also states that the repair is free of charge to the customer, regardless of vehicle mileage or age, up to November 30, 2027.
Symptoms
Owners of affected vehicles should be alert for any of the following issues (which may indicate the BSCM software is not updated or the brake system is compromised):
Unusual or unexplained brake warning lights or messages in the instrument panel
Reduced or inconsistent brake feel, particularly in an electric vehicle where regenerative braking blends with friction braking
Concern that the braking system may perform differently than expected, especially under emergency or panic braking conditions
Notification from GM or the dealer that the vehicle appears in the Investigate Vehicle History database as needing the software update.
Even if none of these manifest yet, the CSP indicates a latent risk—meaning your vehicle may be subject to the campaign even if you have experienced no symptoms yet.
How to Proceed
Document Issues: Retain all service records, recall and CSP notices from GM or your dealer, and communications regarding the braking system. When you take the vehicle in for service, ensure that the work order clearly records your complaint (for example, “BSCM software update per CSP N252521980 — customer concern: brake feel” or equivalent).Reasonable Number of Repair Attempts: While California law does not prescribe a fixed number of attempts, generally if the same brake-system problem recurs after four or more repair attempts, or the vehicle is out of service cumulatively for more than 30 days, you may qualify for relief under the lemon law.
Monitor Symptoms: If you notice any brake‐system malfunction, warning lights, or inconsistent brake feel after the software update (or if you were never notified about it despite being in the covered population), stop driving and schedule inspection with your dealer. Do not simply ignore the notice or wait until symptoms become severe.
Talk to a Lemon Law Attorney, like Valero Law, APC: If your vehicle is covered by CSP N252521980 and you either were never asked to bring it in for the update, or you bring it in and the issue persists (for example, brake master cylinder replacement still fails to correct the brake feel or warning lights), you may be entitled to relief under California’s lemon law. Relief can include a repurchase of your defective vehicle, replacement, or substantial cash reimbursement.
Protect Your Rights Under California Lemon Law
If you are like many owners of the Cadillac Lyriq or Chevrolet Blazer EV who are now facing brake-system control module issues under CSP N252521980, you may be entitled to compensation under the California Lemon Law. Compensation may include:
A complete repurchase of your defective vehicle
A replacement vehicle
Or substantial cash reimbursement for damage already caused by the defect
If you’re in California and your Cadillac Lyriq or Chevrolet Blazer EV is subject to this braking-system control module update issue, call Valero Law, APC at (424) 299-4447 or complete our free Lemon Law case evaluation form today.
Call Valero Law
At Valero Law, APC, our experienced lemon-law attorneys understand the complex issues that arise when advanced electric-vehicle systems fail to perform as designed. If your Cadillac Lyriq or Chevrolet Blazer EV is one of the units affected by CSP N252521980 and you believe you’ve been wronged by the manufacturer’s failure to cure the defect, contact us today for a free evaluation on a contingency basis — you pay nothing unless we recover.