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Chevrolet Silverado - Engine Noise

Silverado • Brakes • Engine noise • Fire • Transmission • Misc. complaints --- News • Brake Problems Plague Silverado Owners • GM Buys Back Some Models With Noisy Engines

Stephen of Peabody MA (11/8/03):
I purchased a new 2002 Chevrolet Silverado 2500 Heavy Duty 4x4 Pickup truck in May 2002. In August 2002 at approximately 5000 miles I noticed a loud rapping, knocking noise coming from my engine. I made an appointment with the dealer and they confirmed my worse suspicions.

My truck was diagnosed with piston slap. According to GM this is completely normal. Well, according to automotive industry experts this is definitely a problem for any vehicle. Gm keeps revising their bulletins to cover themselves. I spent lots of money for this truck and expected to have a quality vehicle. I know that over time from speaking with the dealerships service manager I will experience power loss, poorer fuel economy and higher emissions.

Why doesen't any goverment agency want to investigate this? GM will simply tell all of you that piston slap is normal. Why, you and I may ask? Because it will cost millions to recall their defective engines. I have asked mechanics at GM why do only some of my cylinder walls knock loudly while others do not? I never get an answer.

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