Crankcase (pcv) Problems of Chevrolet Colorado

On may 15, 2026, my 2023 Chevrolet Colorado (2. 7l l3b turbocharged engine, approximately 49,000 miles) lost its entire engine oil charge while in normal operation, and at no point did the low-oil-pressure warning light illuminate to alert me. While driving, a loud buzzing/vibrating noise developed near the upper engine and the center dash area. The vehicle continued to run with no oil-pressure warning of any kind — no low-oil-pressure light and no audible oil-pressure chime. Concerned by the noise, I immediately pulled into a parking lot and checked under the hood. The engine oil dipstick was completely dry, showing no oil whatsoever. I added 3 quarts of oil and the dipstick still showed no reading, indicating the engine had been operating with a critically low or empty oil level. Throughout this entire event, no oil-pressure warning activated. There was no external oil leak, no puddle where the vehicle is normally parked, and no oil in the coolant reservoir, which suggests the oil was being consumed or lost internally rather than dripping out — a condition the driver cannot see or anticipate without a functioning warning system. Drivers depend entirely on the oil-pressure warning system to alert them before oil starvation causes catastrophic engine damage or sudden engine seizure. An engine that seizes without warning while the vehicle is in motion creates an immediate and severe crash risk — sudden loss of motive power in traffic, on a highway, or in an intersection. The complete failure of this warning system to illuminate during a total loss of oil is, by itself, a safety defect independent of whatever is causing the oil loss, because it removes the driver's only opportunity to stop the vehicle safely before failure. These symptoms also align with existing gm service documentation: TSB 25-na-309 addresses high idle, oil consumption, oil leaks, and mil illumination caused by internal failure of the pcv oil separator, and service campaign n232415060 addresses a.

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Rubber hood weather strip at rear of hood closure area detached, dropped down from insufficient retention clip design, atop of driver side exhaust manifold catalyst, and caught fire. Fire grew quickly and traveled up vertical laying weather strip, melted through plastic pcv hoses and convolute over pressurized fuel line soft flex hose portion. Was able to smell burning, see smoke, open hood, and extinguish fire with portable extinguisher before fire penetrated pressurized fuel flex hose area. All of this happened after pulling up to my workplace. This is a stock vehicle kept in excellent maintenance with no modifications. I kept the weather strip and retention clips as proof.

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The contact owns a 2006 Chevrolet Colorado. The contact stated that the vehicle stalled and the pass lock and battery warning indicators illuminated. After the pass lock reset, it took several attempts for the vehicle to restart. The dealer stated that the crank sensor and ignition switch needed to be replaced. The vehicle was repaired, but the failures persisted. The manufacturer was notified of the failures. The approximate failure mileage was 79,000.

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