2007 GMC Sierra 3500 Classic 6.6L V8. 2007 GMC Sierra 3500 Classic 6.0L V8. 2007 GMC Sierra 3500 Classic 8.1L V8. Tests cooling systems. Notes: Standard. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
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