2021 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD SLT Crew Cab Pickup Hose. Cooler. Oil. (Upper, Lower) - 15264589

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2021 GMC Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD SLT Crew Cab Pickup

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Hose. Cooler. Oil. (Upper, Lower)

Part Number: 15264589
Supersession(s): 15233080

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1st Design. 2nd Design. Automatic Transmission Oil Cooler Hose Assembly. Automatic Transmission Oil Cooler Hose. Assembly - Transmission Fluid CLEAR. Automatic Transmission Assembly. Inlet tube. Pipe.

Automatic Transmission Oil Cooler HoseAutomatic Transmission Oil Cooler Hose Assembly

Fits Grand Prix, Impala, Monte Carlo

3.8 LITER, upper.
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.