- posted
18 years ago
2003 Silverado, 4.3, runs good, no check eng, light, pinging sound coming from, catalyst converter,bad o2 sensor or what,
How many miles are on it? Is your pinging sound similar to a marble in a tin can or more of a loose piece of metal or hanger viberating?
It has 55k, miles , sounds like a rock in a tin can, if i tap on the converter with a small hammer, it go`s away for awhile,but starts back up every time i start the truck,
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