Battery check Chevrolet Tahoe 1999 - 2006 | Haynes Manuals
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Locate the battery
Check if the Negative (-) terminal clamp is tight
Check if the Positive (+) terminal clamp is tight. CAUTION If using a wrench to tighten the terminal, be careful not to short the wrench on the bodywork!
Check that the battery is generally secure. If loose, tighten the battery hold-down fasteners