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#1
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1993 Silverado K1500, used for snow plowing. MPG dropped by 1/2 in the last month
Checked engine, diagnostic said code 43, changed Knock sensor and problem did not change. Help.
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#2
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Re: 1993 Silverado K1500, used for snow plowing. MPG dropped by 1/2 in the last month
Go to the closest muffler shop and get a free diagnostic on your catalytic convertors. THat would be the easiest explained for the drop and the most common.
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