Buy 2021 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD SLT Crew Cab Pickup Automatic Transmission - OEM Gmc Part # 84974082 (84906730, 84972921)

Hose. Automatic Transmission Oil Cooler Assembly. Line. Pipe Assembly - Transmission Fluid CLEAR Inlet and Outlet.
At Trans. Automatic Transmission Oil Cooler Hose Assembly.

Automatic Transmission Oil Cooler Hose Assembly

Fits Express 2500, Express 3500, Savana 2500, Savana 3500

6.6 LITER GAS. Express 2500; 6.6L. Express 3500; 6.6L. Savana 2500; 6.6L. Savana 3500; 6.6L.
Trans Oil Cooler Line - Repair or Replace
If your 2021 GMC Sierra 2500 HD is leaking transmission fluid—typically a reddish fluid that becomes darker as it ages—you may have a leaking transmission cooler line. Our GMC experts can diagnose the fault and repair it using factory genuine GMC parts.