2007 Chevrolet Tahoe Car Went Int Reduced Engine Mode Idea Would Cause This

2007 CHEVROLET TAHOE
98,000 MILES
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car went int a reduced engine mode,any idea what would cause this to happen. i did check engine oil level it was o.k.
Nov 22, 2012 at 5:42 PM
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JDL
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Check for applicable codes. How long since a tune-up? Some of the national brand autostores used to check codes for free. To check codes, yourself, at the least you need an obd2 code reader that will work with your year--make--model.
Nov 22, 2012 at 6:14 PM
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