Buy 2007 Gmc Sierra 2500 HD WT Extended Cab Pickup 6.6L Duramax V8 DIESEL A/T RWD Engine. Coolant. Seal - OEM Gmc Part # 94005941

Engine Coolant Temperature Sender O-Ring. O-Ring. Outlet Pipe to Turbo.

Engine Coolant Pipe O-RingEngine Coolant Temperature Sender O-Ring

Fits Express 2500, Express 3500, Savana 2500, Savana 3500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Silverado

6.6 LITER DIESEL.
Engine Coolant Temperature Sending Unit - Repair or Replace
If your engine coolant temperature sender has failed, you may notice one of several symptoms: your temperature gauge doesn’t move, your engine overheats without warning, your radiator fans don’t switch on, or they don’t switch off. If your 2007 GMC Sierra 2500 HD has any of these symptoms, it's a good idea to let a trained GMC technician perform an inspection.