Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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Whether the a/c is on low or high will not effect the gas mileage. the only way the a/c would save gas is if you turn it off, then the clutch is not engaged on the compressor and causing the extra load on the engine. The blower for the a/c has nothing to do with gas mileage.
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need help on a 1999 Chevy K3500 pickup with a 7.4 L