2023 Chevrolet Blazer 42334 miles 9/18/2026 Component failed: 2023 Blazer RS eBoost system. Integrated electronic brake booster / master cylinder / brake pedal sensor assembly. Component available for inspection. Same left front corner had frozen caliper FRC13443C at 37,940 miles June 2025 to pass inspection, sold as certified at 38,038 miles. Vehicle currently 42,334 miles. Safety risk: Hard brake pedal, loss of brake assist, increased stopping distance. Same condition reported before front collision August 2025. Left front remains hot. Driver scared to drive. NHTSA EA26006 open for eBoost 2023 Blazer describes same failure - spindle fracture, loss of ABS/stability, 21 crashes. Reproduced/confirmed: Yes. Independent shop A+ Automotive RO 82780 Sept 15 2026 confirmed hard pedal remains after full bleed, measured 8mm front/rear. Second shop Sept 17 2026 confirmed system is all-wire eBoost, no vacuums, no vacuum leaks possible. Dealer Sept 16-17 2026 stated "checked vacuum on the brakes no leaks" and "pedal fine braking normal" on eBoost vehicle that has no vacuum. Inspected by others: Manufacturer not yet. Dealer inspection 09/16-17/26 misdiagnosed as vacuum issue. Independent inspections A+ Automotive 09/15 and 09/17/26 confirmed eBoost no vacuums and hard pedal remains. Warning lamps/messages: No warning lamps. No ABS light. Symptom is hard pedal that feels like manual brakes without assist. Also left front heat. First appeared June 2025 as frozen left front caliper, retur