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problemwith my ls

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Posted by: ursojp

if anyone knows what the problem might be, can you please help me out. i have an 03 ls v8 with only 38 thousand miles. when im driving, if i push on the gas and it drops to a lower gear the engine sounds like a rattling machine. almost like an old chevy diesel engine noise. also on a cold start up, the car shakes and it sounds like 1 or 2 cylinders arent firing. almost like i have a performance camshaft. does anyone know what the problem might be?

Posted by: Amoxi

Take it to the dealership. It's still under waranty, right?

Posted by: ursojp

yeah i just wanted to get an idea of what might be wrong

Posted by: decibels5

kind of sounds like bad gas, is it a solid,like metal to metal rattling, or kind of like valves chattering. all lss chatter with bad, cheap, or low octane gas.