Shop OEM General Motors Part # 19353729 (15290795, 15808714). Engine Coolant Reservoir. 6.6 LITER TURBO DIESEL. Engine Coolant Expansion Tank - Repair or Replace A failed expansion tank can cause

Engine Coolant Reservoir. Recovery tank.
A container that holds Engine Coolant.

Engine Coolant Reservoir

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

6.6 LITER TURBO DIESEL.
Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.