Part Type: Engine Coolant Reservoir. Application Notes: Engine: 6.0LL V8;. 2007 GMC Sierra 2500 HD Engine: 6.0LL V8; Position: Front;. 2008 GMC Sierra 2500 HD Engine: 6.0LL V8; Position: Front;. 2009 GMC Sierra 2500 HD Engine: 6.0LL V8; Position: Front;.