2002 Chevy Trailblazer idling issues

2002 CHEVROLET TRAILBLAZER
75,000 MILES • 6 CYL • 2WD • AUTOMATIC
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TRAILBLAZER2002
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having ilding issues it started a month ago, use the right regular octane gas, just did a tune up changed spark plugs, air filter, fuel filter about 2 months ago. need help dont know if it has to do with a sensor or egr valve or idle air control valve?
Nov 27, 2009 at 9:51 PM
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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