# 2024 GMC SIERRA 2500 — ELECTRICAL SYSTEM
> NHTSA complaint `2066568` · 2025-02-18 · General Motors, LLC
## Severity
- **Deaths:** 0
- **Injured:** 3
- **Fire:** No
- **Crash:** Yes
- **Police report:** No
- **Medical attention:** No
- **Vehicle towed:** Yes
## Vehicle
- **Make:** GMC
- **Model:** SIERRA 2500
- **Year:** 2024
- **Manufacturer:** General Motors, LLC
- **Component:** ELECTRICAL SYSTEM
- **Speed:** 65 mph
## Narrative
024 GMC Sierra 2500 Denali Ultimate, which has suffered: •Five catastrophic engine failures at highway speeds. •Total brake failure, leaving the truck unable to stop. •Severe electrical malfunctions, including flickering headlights at night. •Retaliatory actions from General Motors after I refused to waive my legal rights.  I have documented proof, including GM’s own service records, emails, and a 7-minute recorded statement from GM’s highest-level technician, confirming that GM installed the wrong computer module (1500 series instead of the required 2500 series) in my truck.  Additionally, I have evidence that GM executives instructed technicians to conduct diagnostics, take apart the engine, and reassemble it—but NOT repair the defect—after I refused to sign an affidavit waiving my rights.  Due to these failures, I suffered a dislocated shoulder in one of the incidents, and my [XXX]  daughter remains traumatized to this day.  Given the immediate danger this defect poses to other GMC Sierra 2500 owners, I respectfully request that NHTSA open an investigation and consider issuing a recall before a tragedy occurs.  1. Engine Failures Since 3,000 Miles – GM’s Own Work Orders Confirm Issue  Since purchasing my 2024 GMC Sierra 2500 Denali Ultimate, I have experienced five catastrophic engine failures, all occurring while traveling at highway speeds (70 mph): •The truck suddenly lost power, dropping from 70 mph to 5-10 mph within seconds. •This created an i
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*Source: [NHTSA ODI](https://www-odi.nhtsa.dot.gov/downloads/) · AI Analytics · CC0 1.0*