Engine Rattling And Whining Sounds Problems of Chevrolet Colorado

I have a 2018 Chevrolet Colorado 3. 6l. I have had a rattle noise on cold start that would happen every so often. Now that I'm 1k miles out of powertrain warranty this rattle noise happens just about every time I start my truck. It is caused by the variable timing actuator on the camshaft. I am an automotive technician, and I'm very familiar with variable timing actuators. The problem is the lock pin in the actuator does not function properly when you turn the vehicle off causing it to drain all the oil out of it. This causes the actuator to rattle around until it get oil pressure. This will eventually causing issues with your timing chain and other components internally in the engine. Very disturbing that gm keeps making vehicles that work fine, usually, until they have gotten out of warranty. Let me also state that I regularly change my oil with the recommended oil and well before it's due. Not very happy!.

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2007 Chevrolet Colorado with multiple safety problems. Consumer stated that after the vehicle was purchased it was taken back for these repairs. Front driver side door latch, hood latch, brake cable repositioned, and check engine light. The consumer stated 3 days after purchasing the vehicle, there was a problem with the driver's side front door hinge. The nuts were not tightened to the main body frame, there was a rattling noise coming from the engine, but the problem was never diagnosed, the front passenger side headlight cover had to be replaced, which the dealer stated the seal was missing, the rotors were warped and the brake pads were glazed and last, the transmission would shift harder than normal.

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