2004 Chevy Blazer Checking trouble codes

2004 CHEVROLET BLAZER
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BEAR123
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Engine Performance problem
2004 Chevy Blazer Two Wheel Drive

Hello Carpros,
I was wondering if the trouble codes can be checked with the ignition on this model and if so how is it done. Thanks for your time and response to my querry. Sincerely Gary H
Jan 7, 2010 at 4:48 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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