2000 GMC Jimmy lousy mileage

2000 GMC JIMMY
12,000 MILES • 6 CYL • 4WD • AUTOMATIC
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DONUTMAN
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What constitutes a "tune-up" on ths vehicle nowadays? Mileage is lousy considering it runs smoothly and well. What components would I expect to be replaced?
Apr 27, 2010 at 10:02 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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LEGITIMATE007
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hi,
plugs ,wires, pcv valve,fuel filter,a throttle body cleaning might be included in some cases, you will feel the difference
also do an air filter, its all easy stuff
Apr 27, 2010 at 10:51 AM
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LEGITIMATE007
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https://www.2carpros.com/how_to/how_to_tune_up.htm
Apr 27, 2010 at 10:53 AM
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LEGITIMATE007
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do yo have a check engine light on?
Apr 27, 2010 at 10:54 AM