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Re: 99 Silverado 4.8L P0300 Misfire and Knocking
Posted to Technical Discussion Forum on 5/23/2003 1 Reply

Hi Jeremy. I think that you're referring to SI Doc #1283125, GM bulletin # 99066F, which applies only to California models with 4.3L code W or X, 5.0L code M and 5.7L code R engines.

Sincerely Login to read more.

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