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2012 GMC Sierra Denali HD 2500 engine bay with Duramax diesel
  1. 2012 GMC Sierra Denali HD 2500 instrument cluster showing trip computer readout
  2. 2012 GMC Sierra Denali HD 2500 center console with navigation screen and climate controls
  3. 2012 GMC Sierra Denali HD 2500 interior dashboard and front seats overview
  4. 2012 GMC Sierra Denali HD 2500 interior front door panel with wood trim
  5. 2012 GMC Sierra Denali HD 2500 engine bay with Duramax diesel
  6. 2012 GMC Sierra Denali HD 2500 Duramax 6.6L engine close-up
  7. 2012 GMC Sierra Denali HD 2500 diesel fuel filler cap
  8. 2012 GMC Sierra Denali HD 2500 hood scoop with Duramax 6.6 HD badge
  9. 2012 GMC Sierra Denali HD 2500 front wheel with chrome alloy rim

2012 GMC Sierra Denali HD 2500 engine bay with Duramax diesel

By William Maley

Under-hood view of the 2012 GMC Sierra Denali HD 2500's engine bay showing the 6.6-liter Duramax diesel V8 with associated intake and ancillary components under the open hood.
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    2012 GMC Sierra Denali HD 2500

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