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Prev Professional Automotive Repair Technical Discussions for July 30, 2026
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2003 Chevrolet Tahoe LT 5.3L MIL Lamp on VIN: 1GNEK13Z93
This truck had the fuel lines replaced but the old lines were still connected to the flex fuel sensor but didn't go anywhere so there was no fuel in the sensor causing bad readings. Getting more info from the customer that happened about a year ago and the lig... Trouble codes: P0178 (Fuel composition sensor).
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